Valid H12-811_V1.0-ENU Exam Dumps are Your best Choice to Pass

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August 9, 2023

If you are looking to take your career in HCIA-Datacom to the next level, the H12-811_V1.0-ENU certification is an excellent option. To prepare for the H12-811_V1.0-ENU exam, you need to have a deep understanding of Huawei products and how to configure them. The best way to prepare for the exam is by using H12-811_V1.0-ENU exam dumps questions, which give you a better understanding of the format of the exam. This will help you become familiar with the types of questions you can expect on the actual H12-811_V1.0-ENU exam, and it will give you a chance to practice your test-taking skills. Test free online H12-811_V1.0-ENU exam dumps questions below.

Page 1 of 26

1. Under the VRP interface, use the command startup saved-configuration backup.cfg to configure the backup.cfg file to be used at the next startup.

True

False

2. An ACL of a router has the following rules:

rule deny tcp source 192.168.1.0 0.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21

Which of the following statements is correct?

The type of ACL is basic ACL

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.2, and destination port number is 21 match this rule

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.1, and destination port number is 21 match this rule

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.2, and destination port number is 21 match this rule

3. The configuration information of a certain router is shown in the figure, which of the following statements is correct? (Multiple choice)

The domain name huawei does not use the billing plan

Use the username huawei for authentication, and the password needs to be 654321

The authentication method adopted by the domain name huawei is local authentication

The authorization method adopted by the domain name huawei is local authorization

4. A company has applied for a class C IP address segment, but it needs to be allocated to 6 subsidiaries. The largest subsidiary has 26 computers. Different subsidiaries must be in different network segments. Then the network of the largest subsidiary the subnet mask should be set to?

255.255.255.128

255.255.255.192

255.255.255.224

255.255.255.0

5. What modes does device link aggregation support? (Multiple choice)

Manual load sharing mode

Manual active/standby mode

Blend Mode

LACP mode

6. Which of the following port numbers is used by network devices running SNMPv2c protocol to send Trap messages to the network management system by default?

161

162

7. It is not necessary to write the next hop when writing static routes at both ends of the PPP link, which is required for Ethernet links.

True

False

8. The Router-ID of OSPFv3 can be automatically generated by the system.

True

False

9. When configuring static routing on a broadcast interface, the next hop address must be specified.

True

False

10. In the network shown in the figure below, the ports connected to the host by switch A and switch B belong to VLAN10 and VLAN20 respectively, and the port type connected to the switches is Trunk, and the PVIDs are 10 and 20 respectively. Which of the following statements is correct? (Multiple choice)

Host A and host B can ping through

Host A's ARP request cannot be forwarded to host B

Host A and host B belong to different VLANs and cannot ping each other

The data frame sent by the host does not carry the VLAN TAG when forwarding the data frame between the switches

Page 2 of 26

11. By default, what is the lease period for the DHCP server to assign IP addresses?

12h

24h

18h

12. On Huawei AR G3 series routers , what authentication modes does AAA support? (Multiple choice)

HWTACACS

802.1x

None

Local

13. In order for the STA to obtain SSID-related information on the AP, which of the following messages does the AP use to actively declare the wireless network SSID information?

Join

Beacon

Discovery

Probe

14. The command to configure the direct forwarding mode on the AC is?

Forward-mode Tunnel

Forward-capwap

Forward-direct

direct-forward

15. The IPv4 address assigned by the network administrator to a certain host in the network is 192.168.1.1/28, how many more hosts can be added to the network where this host is located?

16. Which of the following situation where packet loss may occur? (Multiple choice)

Packets may be lost because the CPU is too busy to process packets

Packet loss occurs during the verification process

Packet loss occurs in the queue

Packet loss occurs during receiving

17. The STP protocol is enabled on the two switches shown in the figure below. An engineer made the following conclusions on this network. Which conclusion do you think is correct? (Multiple choice)

The G0/0/2 port of SWB is stable in Forwarding state

Both ports of SWA are designated ports

The G0/0/2 port of SWA is stable in Forwarding state

Both ports of SWB are designated ports The G0/0/3 port of ESWA is stable in Forwarding state

18. A certain device has been configured with TeInet configuration. The login address of the device is 10.1.1.10, the Telnet user name is admin, and the password is Huawei@123.

What is the correct way to log in to this device using telnetlib?

telnetlib.Telnet (10.1.1.0, admin)

telnetlib.Telnet (10.1.1.0, 23, admin, Huawei@123)

telnetlib.Telnet (10.1.1.0)

telnetlib.Telnet (10.1.1.0, admin, Huawei@123)

19. Which of the following statements about link aggregation in manual load balancing mode is correct?

The number of active ports cannot be set in manual load sharing mode

In manual load sharing mode, all active interfaces participate in data forwarding to share load traffic

There can only be a maximum of 4 active ports in manual load sharing mode

In manual load balancing mode, the devices at both ends of the link send LACP packets to each other

20. Since the TCP protocol uses a three-way handshake mechanism when establishing a connection and closing a connection, TCP supports reliable transmission.

True

False

Page 3 of 26

21. NFV (Network Functional Virtualization), network function virtualization, realizes the deployment of network applications in a software-based manner.

True

False

22. There are many types of LDP messages. Which of the following functions can a session message achieve? (Multiple choice)

Monitor the integrity of the TCP connection of the LDP Session

Terminate the unfinished Label Request Message

Release label

Negotiate parameters during the establishment of LDP Seeion

23. Which of the following statements about Python is wrong?

Python has a wealth of third-party libraries.

Python is a high-level programming language that is completely open source.

Python can be used in many fields such as automated operation and maintenance scripts, artificial intelligence, and data science.

Python has a clear grammatical structure, easy to learn and efficient at the same time.

24. SNMP consists of which of the following parts? (Multiple choice)

Managed objects

Network management system

Management Information Base

Agent process

25. After the network administrator uses the Tracert Route function on the router device, in the data packet sent by the router, the value of the protocol field of the IPV4 header is?

26. Which of the following advantages does the single-arm routing method achieve routing intercommunication between VLANs?

Reduce the number of link connections

Reduce the number of devices

Reduce routing table entries

Reduce the use of IP addresses

27. The switch becomes a logical switch through stacking and clustering, and Eth-Trunk across physical devices can be deployed to improve network reliability.

True

False

28. When routers are running in the same OSPF area, which is the correct description of their LSDB and routing table? (Multiple choice)

All routers get the same link-state database

The routing table obtained by all routers is the same

The link state database obtained by each router is different

The routing table of each router is different

29. The configuration information of a certain port of the switch is shown in the figure, so when this port sends data frames carrying which VLANs, the VLAN TAG is stripped?

4,5,6

1,4,5,6

4,6

1,4,6

30. What is the main function of the DHCP DISCOVER message?

The server's confirmation response to the REQUEST message

The client is used to find the DHCP server

The client requests configuration confirmation, or renews the lease

The DHCP server is used to respond to the DHCP DISCOVER message, which carries various configuration information

Page 4 of 26

31. As shown in the figure below, suppose SWA has just started and the MAC address table is empty. Now host A sends a data frame with the destination MAC address as MAC-B. Which of the following statements is correct?

SWA discards the data frame

Flood the data frame out

Forward this data frame only from G0/0/3 port

Forward this data frame only from G0/0/2 port

32. In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?

VRRP

STP

ARP

UDP

33. The network shown in the figure below, which of the following statements is correct? (Multiple choice)

Host A and host C can ping through

All hosts can ping each other

Host B and host C can ping through

Host A and host B cannot ping through

34. How many bits is the total length of the IPV6 address?

128

35. What is the full name of VRP?

Versatile Redundancy Platform

Versatile Routing Protocol

Virtual Routing Platform

Versatile Routing Platform

36. Which of the following MAC addresses cannot be used as the MAC address of the host network card? (Multiple choice)

00-02-03-04-05-06

03-04-05-06-07-08

02-03-04-05-06-07

01-02-03-04-05-06

37. The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct?

[RTA] aaa

[RTA-aaa] domain huawei

[RTA-aaa-domain huawei] authentication-scheme au1

[RTA-aaa domain-huawei] authentication-scheme au2

will use "authentication-scheme au1" authentication

"authentication-scheme au1" authentication will be used, if "au1" is removed, "au2" authentication will be used

"authentication-scheme au2" authentication will be used, if "au2" is removed, "au1" authentication will be used

will use "authentication-scheme au2" authentication

38. Regarding the description of the characteristics of a high-availability network, which one is correct? (Multiple choice)

It can recover quickly after a failure

Once a failure occurs, the business can only be restored through manual intervention

will not fail

Infrequent failure

39. The discarding strategy in the congestion avoidance mechanism, which does not include? (Multiple choice)

FIFO

RED

WRED

WFQ

40. The two switches shown in the figure below have both enabled the STP protocol, which port will eventually be in the Blocking state?

G0/0/3 port of SWA

G0/0/2 port of SWA

G0/0/2 port of SWB

G0/0/3 port of SWB

Page 5 of 26

41. The LDP session is used to exchange messages such as label mapping and release between LSRs. Which of the descriptions about the process of establishing an LDP session is correct? (Multiple choice)

Two LSRs exchange Hello messages to establish an LDP session

The initalization Message is used to negotiate parameters during the establishment of the LDP Session

KeepAlive Message is used to monitor the integrity of the TCP connection of LDP Seesion

When the ingress node LSR receives the label mapping message, the establishment of the LDP session is completed

42. What is used to identify wireless networks in WLAN and distinguish different wireless networks?

AP Name

SSID

VAP

BSSID

43. Which of the following descriptions of OSPF is correct? (Multiple choice)

The number of the backbone area cannot be 2

Area numbers from 0.0.0.0-255.255.255.255

All networks should be declared in area 0

Before configuring an OSPF area, an IP address must be configured for the loopback port of the router

44. The Radius information configuration of the router is as follows, which of the following statements is correct? (Multiple choice)

radius-server template Huawei

radius-server shared-key cipher Huawei

radius-server authentication 200.0.12.1 1812

radius-server accounting 200.0.12.1 1813

radius-attribute nas-ip 200.0.12.2

#

The source IP address of the router sending the Radius packet is 200.0.12.2

The IP address of the authorization server is 200.0.12.1

The IP address of the authentication server is 200.0.12.1

The IP address of the billing server is 200.0.12.1

45. As shown in the figure below, router A has already Telnet router B through IP address 10.0.12.2. Under the current interface, which of the following operations will cause the Telnet session between router A and router B to be interrupted? (Multiple choice)

Enable the OSPF protocol on the G0/0/1 interface

Configure static routing

Modify the IP address of the G0/0/1 interface

Close the G0/0/1 interface

46. Application data must carry a MAC address after being processed by the data link layer.

True

False

47. NAPT allows multiple private IP addresses to be mapped to the same public IP address through different port numbers, so which of the following descriptions about port numbers in NAPT is correct?

Only need to configure the port number range

The correspondence between the port number and the private address must be manually configured

You need to use ACL to assign port numbers

No need to do any port number configuration

48. As shown in the figure, which one is correct about the description of this network topology?

There are 6 broadcast domains in this network

There are 12 collision domains in this network

There are 6 collision domains in this network

There are 2 broadcast domains in this network

49. The administrator wants to upgrade the configuration file for the AR2200 through a USB cable, which of the following descriptions is correct? (Multiple choice)

AR2200 does not support using USB to update configuration files

Use a mini USB cable to connect the USB port of the PC to the AR2200

After connecting the cable, the administrator needs to install the driver for the mini USB

Use a mini USB cable to connect the PC to the mini USB port of the AR2200

50. Which of the following cannot be the length of the IPv4 packet header?

60B

20B

64B

32B

Page 6 of 26

51. Why is it said that the QoS of the network can be improved by increasing the link bandwidth capacity? (Multiple choice)

The increase in link bandwidth reduces the chance of congestion and reduces the number of lost packets

An increase in link bandwidth can increase the available bandwidth of the control protocol

Increased link bandwidth means less latency and jitter

Increased link bandwidth can support higher traffic

52. IEEE802.11ac only supports the 5GHZ frequency band.

True

False

53. In WLAN, it is used to receive wireless networks. What distinguishes different wireless networks?

AP Name

BSSID

SSID

VAP

54. What extension headers are supported by IPv6 packets? (Multiple choice)

Fragmentation Extension Header

Destination Options Extension Header

VLAN extension header

Hop-by-Hop Options Extension Header

55. As shown in the figure below, all hosts can communicate normally. Which of the following statements is correct? (Multiple choice)

G0/0/3 of SWB learned 2 mac addresses

G0/0/3 of SWA learns a mac address

G0/0/3 of SWA learns 2 mac addresses

G0/0/3 of SWA learns 3 mac addresses

56. In the network shown in the figure below, all routers run the OSPF protocol. Which device is the ABR? (Multiple choice)

Router A

Router B

Router C

Router D

57. Which of the following is correct about RS and RA in IPv6? (Multiple choice)

RA is used to request address prefix information

RA is used to reply address prefix information

RS is used to request address prefix information

RS is used to reply address prefix information

58. In MPLS VPN, in order to distinguish IPv4 prefixes using the same address space, the RD value is added to the IPv4 address. Which of the following option descriptions is correct? (Multiple choice)

The RD is encapsulated in the Update message as an extended BGP attribute during transmission.

After the PE receives the IPv4 route from the CE, it adds RD to the IPv4 route and converts it into a globally unique VPN-IPv4 route, and publishes it on the public network.

Each VPN instance on the PE device corresponds to an RD value. On the same PE device, the RD must be globally unique.

RD can be used to control the release of VPN routing information

59. Which of the following statements about static routing in Huawei equipment is wrong?

When the priority of a static route is 0, the route will definitely be preferred.

The cost value (Cost) of the static route cannot be modified.

The default value of static route priority is 60

The range of static route priority value is 1-255

60. As shown in the figure, it can be judged that 00e0-fc99-9999 is a specific host and MAC address learned by the switch through ARP, and the host has changed its IP address three times.

True

False

Page 7 of 26

61. Which of the following is related to the purpose of encapsulation and decapsulation? (Multiple choice)

Shorten the length of the message

Encapsulation and decapsulation are important steps to realize different protocol functions

Interworking between different networks

Encapsulation and decapsulation can complete the location of network faults

62. Which of the following statements about the function of STP protocol Forward Delay is correct?

Improve the convergence speed of STP

Increase the life time of BPDU to ensure that the configuration BPDU can be forwarded to more switches

Prevent temporary loops

A delay is required when switching between the Blocking state and the Disabled state

Reduce the time interval for sending BPDUs

63. Regarding the control plane of the device, which of the following statements is correct? (Multiple choice)

The control plane provides device monitoring capabilities.

The controller plane is responsible for generating the IP routing table.

The control plane is responsible for directing data forwarding.

The control plane is responsible for the interaction of routing protocols between devices.

64. On the switch, which VLANs can be deleted by using the undo command? (Multiple choice)

Vlan 1

Vlan 2

Vlan 1024

Vlan 4094

65. The loop protection function provided by the RSTP protocol can only be configured on the specified port to take effect.

True

False

66. In PPP, when the two ends of the communication detect the activation of the physical link, they will transition from the link unavailable stage to the link establishment stage. In this stage, the link parameters are mainly negotiated through the () protocol

LCP

NCP

DHCP

67. In the network shown in the figure below, in the MAC address tables of SWA and SWB, which of the MAC address, VLAN, and port correspondences are correct? (Multiple choice)

SWB: MAC Address VLAN Port MAC-A 100 GE0/0/3 MAC-B 200 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/1 MAC-B 20 GE0/0/2 MAC-C 100 GE0/0/3

SWB: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/3

68. MIB (management information base) is a virtual database that only exists on the NMS.

True

False

69. Which of the following fields does the ARP packet format contain? (Multiple choice)

Operation type

protocol type

Hardware type

protocol Address of sender

70. The following rules exist in an ACL of a router:

rule deny tcp source 192.168.2.0 0.0.0.255 destination 172.16.10.2 0.0.0.0

Which of the following statements is correct?

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.1 match this rule

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.2 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.1 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.0 match this rule

Page 8 of 26

71. Which of the following types of ACL can match the transport layer port number?

Advanced ACLs

Basic ACLs

Layer 2 ACL

Intermediate ACLs

72. UDP has a sliding window mechanism to control the speed of data transmission.

True

False

73. Which of the following statements is correct about the VLAN design and planning of the campus network? (Multiple choice)

The most commonly used VLAN division method is based on MAC

The most commonly used VLAN division method is based on port division

Reserve a certain number of VLANs to facilitate subsequent expansion

It is recommended to assign VLAN numbers continuously to ensure reasonable utilization of VLAN resources

74. OPX is defined as?

Maintenance cost

Total Cost of Ownership c. Operating costs

Operation and maintenance costs

75. SR (SegmentRouting) defines destination address prefixes/nodes and adjacencies in the network as segments, and assigns SIDs (SegmentID) to these segments. A forwarding path is obtained by unordered arrangement (Segment List) of Adjacency SID (adjacent segment) and Prefix/Node SID (destination address prefix/node segment).

True

False

76. On an interface that uses PPP as the data link layer protocol, you can configure a static route by specifying the next hop address or the outgoing interface.

True

False

77. When two OSPF routers form a 2-WAY neighbor relationship, the LSDB has been synchronized.

True

False

78. Referring to the following topology and configuration, routers R1 and R2 are connected through a serial low-speed cable, and the data link layer encapsulation uses PPP. When the hold times of R1 and R2 are inconsistent, PPP negotiation fails and communication cannot be performed.

True

False

79. On Huawei switches, you can use the command vlan batch to create multiple VLANs in batches to simplify the configuration process.

True

False

80. If the Length/Type=0×8100 of an Ethernet data frame, which of the following ports may this data frame be sent from? (Multiple choice)

Switch Trunk type ports

Hybrid port of the switch

Access port of the switch

Serial interface of the router

Page 9 of 26

81. RADIUS is a common protocol for implementing AAA.

True

False

82. What is the function of the command port trunk allowpass vlan all?

If the port default vlan3 command is configured for the connected remote device, the VLAN3 between the two devices cannot communicate.

The peer port connected to this port must be configured with port trunk permit vlan all at the same time

The connected peer device can dynamically determine which VLAN IDs are allowed to pass through

The port allows data frames of all VLANs to pass through

83. Complete the ACL configuration shown in the figure on the router RTA, which of the following descriptions is correct?

[RTA] acl 2001

[RTA-acl-basic-2001] rule 20 permit source 20.1.1.0 0.0.0.255

[RTA-acl-basic-2001] rule 10 deny source 20.1.1.0 0.0.0.255

The VRP system will adjust the sequence number of the first rule to 5 according to the order of configuration

The VRP system will not adjust the serial number, but will first match the rule permit source 20.1.1.0 0.0.0.255

The VRP system will first match the rule deny source 20.1.1.0 0.0.0.255 in sequence number

Configuration error, the sequence number of the rules must be configured from small to large

84. What are the two stages of the PPPoE session establishment process? (Multiple choice)

Discovery stage

PPPoE Session phase

PPP connecting stage

DHCP stage

85. Now there are four network segments 10.24.0.0/24, 10.24.1.0/24, 10.24.2.0/24, 10.24.3.0/24, which route can point to these four network segments at the same time?

10.24.1.0/23

0.0.0.0/0

10.24.0.0/22

10.24.0.0/21

86. Regarding the function of ARP protocol and packet encapsulation, which description is correct?

The ARP protocol supports deployment on PPP links and HDLC links

The ARP protocol is based on Ethernet encapsulation

The MAC address and UUID address of the destination can be obtained through the ARP protocol

The ARP cache on the network device can only be obtained through the ARP protocol

87. The configuration information of a certain port of the switch is shown in the figure, which of the following statements is wrong?

#

interface GigabitEthernet0/0/2

port hybrid pvid vlan 100

port hybrid tagged vlan 100

port hybrid untagged vlan 200.

#

The port type is Hybrid

If the VLAN TAG carried by the data frame is 200, the switch strips the VLAN TAG and sends

If the port receives a data frame without VLAN TAG, the switch needs to add VLAN TAG 100

If the VLAN TAG carried by the data frame is 100, the switch strips the VLAN TAG and sends

88. RSTP protocol uses P/A mechanism to speed up the speed of the upstream port to transfer to Forwarding state, but what is the reason why there is no temporary loop?

Through the synchronization mechanism to ensure that there will be no temporary loops

Shorten the time of Forward Delay

Speed up port role election

Introduced edge ports

89. The same interface of a router cannot serve as a DHCPv6 server and a DHCPv6 client at the same time.

True

False

90. Which of the following descriptions about static and dynamic routing is wrong?

Dynamic routing protocols take up more system resources than static routing

After a link failure occurs, static routing can automatically complete network convergence

Static routing is easy to configure and easy to manage when it is applied in the enterprise

After the administrator deploys the dynamic routing protocol in the enterprise network, later maintenance and expansion can be more convenient

Page 10 of 26

91. AP can only bind one SSID to one radio port.

True

False

92. If a network has a broadcast address of 172.16.1.255, then its network address might be?

172.16.2.0

172.16.1.1

172.16.1.128

172.16.1.253

93. How many types of data flows with different service levels can be marked at most based on MPLS labels?

94. Telnetlib is a template that comes with Python to implement the Telnet protocol.

True

False

95. A switch running the STP protocol will only send a TCN BPDU when a port of the switch fails.

True

False

96. Which of the following descriptions about OSPF areas is correct? (Multiple choice)

In configuring the OSPF area correctly, you must configure an IP address for the loopback interface of the router

All networks should be declared in area 0

The number of the backbone area cannot be 2

Zone numbers range from 0.0.0.0 to 255.255.255.255

97. What is the number range of Layer 2 ACL?

4000-4999

2000-2999

6000-6031

3000-3999

98. Host 192.168.1.2 must go through NAT when accessing the public network address.

True

False

99. The authentication scheme, authorization scheme, accounting scheme, HYTACACS or RADIUS server template created on the AR router can take effect only after being applied in the domain.

True

False

100. Which kind of NAT can convert multiple private network addresses into one public network address to access the public network at the same time? (Multiple choice)

Static NAT

Dynamic NAT

NAPT

Easy IP

Page 11 of 26

101. The switch is connected to the host, and the commonly used port link type of the switch is?

Hybrid link

Trunk link

Access link

Trunk link

102. Which message does the DHCP server use to confirm that the host can use the IP address?

DHCP ACK

DHCP DISCOVER

DHCP REQUEST

DHCP OFFER

103. The login timeout function in VRP can only be set under the VTY interface.

True

False

104. Which of the following protocols is not a file transfer protocol?

FTP

SFTP

HTTP

TFTP

105. Which of the following is not a characteristic of a small campus network?

Simple network hierarchy

Wide coverage

The number of users is small

Simple network requirements

106. During campus network planning, VLANs can be planned according to business types.

True

False

107. When two switches are interconnected using link aggregation technology, which of the following conditions must be met by each member port? (Multiple choice)

The number of physical ports connected at both ends is the same

The speed of the physical ports connected at both ends is the same

The duplex mode of the physical ports connected at both ends is the same

The physical numbers of the physical ports connected at both ends are the same

The optical module models used by the physical ports connected at both ends are the same

108. After the stack splits, the side that loses the MAD election will be in ().

109. What are the stable states of the OSPF protocol neighbor relationship? (Multiple choice)

2-way

Full

Down

attempt

110. A gateway must be configured for a host to communicate with other hosts.

True

False

Page 12 of 26

111. The network administrator uses Ping to test the connectivity of the network. Which of the following protocols may be used in this process? (Multiple choice)

UDP

ICMP

ARP

TCP

112. Which of the following statements about the Python language is wrong? (Multiple choice)

Python generally executes code sequentially from beginning to end.

Pay attention to the use of comments when writing code to help people who read the code understand. Comments start with =.

The Python language supports automatic indentation, so you don't need to pay attention when writing code.

The function of print () is to output the content inside the brackets.

113. The ICMP message does not contain the port number, so NAPT cannot be used.

True

False

114. The role of the collaboration layer in the SDN architecture is to complete service deployment based on user intentions. OpenStack belongs to the business collaboration layer.

True

False

115. Regarding the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B, which of the following abbreviations are correct? (Multiple choice)

2031:0:720C:0:0:9E0:839A:130B

2031:0:720C::9E0:839A:130B

2031:0:720C:0:0:9E:839A:1308

2031::720C::9E0:839A:130B

116. MAC address table does not include?

Port number

Vlan

IP address

MAC address

117. If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255.

True

False

118. On the command line interface of the Huawei AR router, the save command is used to save the current system time.

True

False

119. Which of the following statements about IPv6 address configuration is correct? (Multiple choice)

IPv6 supports stateless autoconfiguration

IPv6 address can only be manually configured

IPv6 addresses support automatic configuration in multiple ways

IPv6 supports address configuration in the form of DHCPv6

120. Which of the following statements about RA and RS packets in IPv6 is correct? (Multiple choice)

RS is used to request address prefix information

RS is used to reply address prefix information

RA is used to reply address prefix information

RA is used to request address prefix information

Page 13 of 26

121. What mechanisms can VRRP be combined with to monitor the connectivity of the uplink? (Multiple choice)

Interface track

BFD

NQA

Ip-link

122. What is the MAC address of the data link layer of each VAP on the AP?

SSID

BSSID

BSS

ESS

123. In the network shown in the figure, which of the following configurations can realize that host A cannot access the HTTP service of host B, and host B cannot access the FTP service of host A? (Multiple choice)

acl number 3000 rule 5 deny tcp source 100.0.12.0 0.0.0.255 source-port eq www destination 100.0.13.0 0.0.0.255 # acl number 3001 rule 5 deny tcp source 100.0.13.0 0.0.0.255 source-port eq ftp destination 100.0.12.0 0.0.0.255 # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #

acl number 3000 rule 5 deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.0 0.0.0.255 destination eq www # acl number 3001 rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.0 0.0.0.255 destination eq ftp # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #

124. Which of the following authentication methods does not require entering a user name and password?

authentication-mode none

authentication-mode local

authentication-mode hwtacacs

authorization-mode hwtacacs

125. If the protocol of the transport layer is UDP, the value of the Protocol field of the network layer is 6.

True

False

126. LDP neighbor discovery has different implementation mechanisms and regulations. which of the following description about LDP neighbor discovery is wrong?

LDP discovery mechanism includes LDP basic discovery mechanism and LDP extended discovery mechanism

The basic LDP discovery mechanism can automatically discover LDP Peers directly connected to the same link

LDP extended discovery mechanism can discover non-directly connected LDP Peers

The LDP discovery mechanism needs to clearly specify the LDP Peer

127. As shown in the figure below, if IPsec adopts tunnel mode, what is the scope of ESP authentication?

128. The host must go through NAT when using the IP address 192.168.1.2 to access the Internet.

True

False

129. The broadcast address is a special address in which all the host bits in the network address are set to 1, and it can also be used as a host address.

True

False

130. The command to configure the country code on the AC is?

nation-code

province-code

country-code

state-code

Page 14 of 26

131. Which of the following is not the reason why RSTP can improve the convergence speed?

Fast switchover of the root port

Introduction of edge ports

Cancel Forward Delay

P/A Mechanism

132. As shown in the figure, all four switches are running STP, and various parameters adopt default values.

If the G0/0/2 port of switch C is blocked and cannot send configuration BPDUs through this port, how long will it take for the blocked port in the network to enter the forwarding state?

About 30 seconds

About 50 seconds

About 15 seconds

About 3 seconds

133. In the OSI reference model, what can complete end-to-end error detection and flow control is?

Data link layer

Network layer

Physical layer

Transport layer

134. An ACL rule is as follows:

rule 5 permit ip source 10.0.2.0 0.0.254.255

Which of the following IP addresses can be matched by the permit rule? (Multiple choice)

10.0.4.5

10.0.5.6

10.0.6.7

10.0.2.1

135. In the network shown in the figure below, from the perspective of security, router A refuses to receive OSPF packets and ICMP packets received from the G0/0/1 interface. Which of the following commands can achieve this requirement? (Multiple choice)

acl number 3000 rule 5 deny 89 rule 10 deny icmp # interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 #

acl number 3000 rule 5 deny 89 rule 10 deny 1 # interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 #

acl number 2000 rule 5 deny 89 rule 10 deny 1 # interface GigabitEthernet0/0/1 traffic-filtet inbound acl 2000 #

acl number 3000 rule 5 deny ospf rule 10 deny icmp # interface GigabitEthernet0/0/1 traffic-filtet inbound acl 3000 #

136. When the IPv4 protocol is used as the network layer protocol, which field is not included in the network layer header?

Destination IPv4 Address

Source IPv4 Address

Sequence Number

TTL

137. Telnet is based on the TCP protocol.

True

False

138. The port numbers used in the control tunnel and data tunnel transmission of CAPWAP are the same.

True

False

139. Which of the following commands configures the authentication mode as HWTACAS authentication?

authentication-mode hwtacacs

authentication-mode none

Authorization-mode hwtacacs

Authorization-mode local

140. The MAC address table of the existing switch is shown in the figure, which of the following statements is correct?

The MAC address 5489-9811-0b49 is manually configured by the administrator

After the switch restarts, all MAC addresses need to be relearned

The MAC address 5489-989d-1d30 is manually configured by the administrator

The MAC address 5489-9885-18a8 is manually configured by the administrator

Page 15 of 26

141. A network engineer prompts the following information when entering the command line:

Error: Unrecognized command found at '^' position. Which statement is correct about this prompt message?

The input command is incomplete

The parameter type is wrong

The input command is ambiguous

Keyword not found

142. Which of the following attributes cannot be used as a parameter to measure Cost?

Latency

sysname

Hop count

Bandwidth

143. In the network shown in the figure below, when the OSPF neighbor status is stable, what is the neighbor status of Router B and Router C?

Full

2-way

Attempt

Down

144. RSTP configures the value of the Type field in the BPDU message?

0x03

0x01

0x00

0x02

145. The multicast address FF02::1 indicates all nodes in the link-local range.

True

False

146. What are the advantages of PQ+WFQ? (Multiple choice)

Messages with different priorities cannot be treated differently

It can ensure that low-latency services can be dispatched in time

Implement bandwidth allocation by weight

Realize the needs of flexible classification of messages according to user-defined

147. In the network shown in the figure below, the bridge ID of the switch has been marked. Enter the command stp root secondary on the SWD switch, which of the following switches will become the root bridge of this network?

SWB

SWC

SWA

SWD

148. Compared with STP, which of the following port roles are newly defined in RSTP? (Multiple choice)

Root port

Backup port

Alternate port

Specify port

149. Which of the following commands is used to configure the VRRP preemption delay?

vrrp vrid 1 preempt-delay 20

vrrp vrid 1 preempt-mode timer delay 20

vrrp vrid 1 timer delay 20

vrrp vrid 1 preempt-timer 20

150. After the link authentication is completed, the STA will continue to initiate link service negotiation. The specific negotiation is realized through which of the following messages?

Association

Negotiate

Handshake

Join

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151. When a Windows host starts for the first time, if DHCP is used to obtain an IP address, what is the source IP address of the first packet sent by this host?

255.255.255.255

0.0.0.0

127.0.0.1

169.254.2.33

152. In the STP protocol, the Message Age in the configuration BPDU sent by the root bridge is 0.

True

False

153. In the history of WLAN development, which of the following is not included in the main wireless protocol standards in the primary mobile office era?

802.11ac

802.11g

802.11b

802.11a

154. Which of the following port states does the RSTP protocol include? (Multiple choice)

Discarding

Forwarding

Listening

Learning

155. Which of the following statement about the shortcut keys of the VRP operating platform is correct? (Multiple choice)

Ctrl+Z to return to the user view

Ctrl+C stops the running of the current command

Left cursor key

Tab prompts for recently entered commands

156. If the application layer protocol is Telnet, what is the value of the Protocol field in the IPv4 header?

157. What are the three attributes that information security is most concerned about? (Multiple choice)

Confidentiality

Integrity

Availability

Authentication

158. By default, the bridge priority of the switch spanning tree is 32768 by default.

True

False

159. If the IPv4 address of a host in the LAN is 192168.1.1/30, which of the following IP addresses will be processed by the host as the destination address? (Multiple choice)

255.255.255.255

192.168.1.2

192.168.1.1

192.168.1.3

160. Only the security policy of WPA2-PSK supports the use of TKIP for data encryption.

True

False

Page 17 of 26

161. Which of the following is not included in the VRP system login method?

Telnet

Netstream

SSH

web

162. The login timeout time in the VRP system can only be set under the VTY interface.

True

False

163. Which kind of message is used in OSPF protocol to request LSA that is missing locally?

LSACK

LSU

Hello

LSR

164. The origin of SDN is the separation of transfer and control. Separation of control and control is a method but not the essence of realizing SDN.

True

False

165. On the interface that uses PPP as the data link layer protocol, you can configure static routing by specifying the next hop address or the outgoing interface.

True

False

166. The Layer 2 switch belongs to the data link layer device, which can identify the mac address information in the data frame, forward the data according to the mac address, and record these mac addresses and corresponding port information in its own mac address table.

True

False

167. The tree network topology is actually a hierarchical star structure, which is easy to expand the network scale, but the higher the level, the more serious the network problems caused by node failure.

True

False

168. On Huawei routers, by default, the value of the internal routing priority of the OSPF protocol is?

169. A certain router runs the OSPF protocol and does not specify a Router ID. The IP addresses of all interfaces are as follows. What is the Router ID of this router’s OSPF protocol?

10.0.21.1

10.0.1.2

10.0.1.1

10.0.12.1

170. On serial interfaces, static routing can be configured by specifying the next-hop address or outgoing interface.

True

False

Page 18 of 26

171. According to the command shown in the figure, which of the following descriptions is correct? (Multiple choice)

The PVID of port GigabitEthernet0/0/1 is 1

The PVID of port GigabitEthernet0/0/2 is 1

The PVID of port GigabitEthernet0/0/2 is 10

The PVID of port GigabitEthernet0/0/1 is 10

172. The capwap tunnel is established, which of the following are the authentication mode of the AC? (Multiple choice)

Not certified

MAC authentication

Password authentication

SN certification

173. Which of the following IPv6 addresses is a multicast address?

FE80::2E0:FCFF:FEEF:FEC

2000::2E0:FCFF:FEEF:FEC

FC00::2E0:FCFF:FEEF:FEC

FF02::2E0:FCFF:FEEF:FEC

174. Which information of the message can be marked or re-marked? (Multiple choice)

MAC Address information

Any information in the message

IP Source, Destination Address, EXP information

IP DSCP, IP Precedence, 802.1p, EXP information

175. The packet that the DHCP server responds to the client must be a unicast packet.

True

False

176. When a Huawei switch runs STP, the default priority of the switch is

4096

32768

16384

8192

177. After the keepalive function of GRE is enabled, the local end of the GRE tunnel will periodically send a Keepalive message to the peer end every 10s.

True

False

178. If the Ethernet data frame Length/type=0x0806, which of the following statements is correct? (Multiple choice)

The destination MAC address of this data frame may be FFFF-FFFF-FFFF

The source MAC address of this data frame must not be FFFF-FFFF-FFFF

This data frame is an IEEE 802.3 frame

This data frame is an Ethernet II frame

179. In the network shown in the figure below, assuming that all routers can enable the OSPF protocol at the same time, which router is the DR in this network?

Router B

Router D

Router A

Router C

180. In order to realize the network layer function on the VLANIF interface, it is necessary to configure which of the following on the VLANIF interface? (Multiple choice)

IP prefix

Subnet mask

MAC address

IP address

Page 19 of 26

181. Using the IKE protocol to establish an SA for IPsec auto-negotiation can support identity authentication when the address of the negotiation initiator changes dynamically.

True

False

182. What are the advantages of NFV? (Multiple choice)

Reduce equipment costs

Shorten the innovation cycle of network operation business

Network devices can manage distance in a unified version

A single platform provides services for different applications and tenants

183. Which of the following protocols are dynamic routing protocols? (Multiple choice)

Direct

static

BGP

OSPF

184. In standard STP mode, which port of the following non-root switch will forward the TC set BPDU generated by the root switch?

Specify port

Root port

Backup port

Preparatory port

185. Using a traditional landline to make a call is a way of network communication.

True

False

186. RSTP protocol does not include which of the following port states?

Forwarding

Learning

Discarding

Blocking

187. How to add AP on AC? (Multiple choice)

Import AP offline

Manually confirm the AP in the unauthenticated list

Automatically discover APs

Add online

188. In order to implement the FIT AP online, the FIT AP first needs to obtain the IP address of the AC. Which of the following does not include the method for the FIT AP to obtain the AC’s IP address?

Broadcast method

Multicast mode

Static designation method on AP

DHCP Option mode

189. As shown in the figure below, which port of the following switch will be blocked?

G0/0/2 of SWC

G0/0/3 of SWA

G0/0/1 of SWC

G0/0/3 of SWB

190. As shown in the figure below, the router configuration information is as follows. According to this network and configuration, which of the following statements is correct? (Multiple choice)

Router A and Router B cannot learn the MAC address of each other's interface

Router A and Router B have ARP tables

Two routers can establish an OSPF adjacency

There is no DR and BDR in the network

Page 20 of 26

191. The data link layer uses PPP encapsulation, and the IP addresses at both ends of the link may not be in the same network segment.

True

False

192. The full name of the LER in the MPLS domain is Label Egress Router.

True

False

193. Which of the following statements is correct?

The router works at the network layer

The switch works at the physical layer

The switch works at the network layer

The router works at the physical layer

194. What are the characteristics of dividing VLANs based on ports?

Add a BLAN tag to the data frame according to the IP address carried in the message

Host relocation does not require VLAN reconfiguration

The location of the host needs to reconfigure the VLAN

Assign VLAN ID according to the protocol type and encapsulation format of the data frame

195. The administrator plans to implement route backup by configuring static floating routes, so what is the correct way to implement it?

The administrator only needs to configure two static routes

The administrator needs to configure different metric values for the active static route and the backup static route

The administrator needs to configure different protocol priority values for the active static route and the backup static route

The administrator needs to configure different TAGs for the active static route and the backup static route

196. As shown in the figure, there are three data packets captured by the administrator in the network. Which of the following statements is wrong?

None of the three packets contain application layer data

These three data packets represent the three-way handshake process of TCP

The telnet client uses port 50190 to establish a connection with the server

The IP address of the telnet server is 10.0.12.1, and the IP address of the telnet client is 10.0.12.2

197. The router running the OSPF protocol first reaches the FULL state, and then performs LSDB synchronization.

True

False

198. Which of the following descriptions about spanning tree designated ports is correct?

The port on the root switch must not be a designated port

The designated port can forward the configuration BPDU message to the network segment connected to it

Each switch has only one designated port

The designated port forwards the configuration BPDU message from this switch to the root switch

199. In order to detect the connectivity status of the CAPWAP tunnel, which of the following CAPWAP packets does the AC use for detection after the CAPWAP tunnel is established? (Multiple choice)

Keepalive

Echo

DPD

Hello

200. Which of the following is not included in the limitations of traditional networks?

The speed of upgrading new services on the network is relatively slow.

It is difficult to implement complex operation and maintenance of network protocols.

Devices from different manufacturers have similar implementation mechanisms, and the difference in operation commands is small, which is easy to operate.

The ability to adjust the traffic path is not flexible enough.

Page 21 of 26

201. How many planes does a network device have? (Multiple choice)

Business plane

Management plane

Control plane

Data plane

202. In the network shown in the figure, the administrator hopes that all hosts cannot access the Internet between 8:00-17:00 every day, so which ACL rule should be bound to the traffic-filter outbound in the interface configuration of G0/0/1?

Time-range am9topm5 08:00 to 17:00 daily # Acl number 2001 Rule 5 deny time-range am9 to pm5 #

Time-range am9topm5 07:00 to 18:00 daily # Acl number 2002 Rule 5 permit time-range am9 to pm5 #

Time-range am9topm5 08:00 to 17:00 off-day # Acl number 2004 Rule 5 permit time-range am9 to pm5 #

Time-range am9topm5 08:00 to 17:00 working-day # Acl number 2003 Rule 5 deny time-range am9 to pm5 #

203. The network administrator of a company wants to divide users who often change office locations and often access the company network through different switches into VLAN10. Which of the following methods should be used to divide VLANs?

Protocol-based VLAN division

Divide VLAN based on MAC address

Port-based VLAN division

Based on subnetting VLAN

204. In the network shown in the figure below, all links are Ethernet links, and all interfaces of all routers run the OSPF protocol, how many DRs are elected in the entire network?

4 _

205. The campus network can improve network reliability through link aggregation and stacking.

True

False

206. SR (Segment Routing), as a new tunnel technology replacing MPLS, has attracted more and more attention. Many users hope to introduce SR technology to simplify network deployment and management and reduce CAPEX (Capital Expenditure). SR, as the current mainstream tunnel technology, is widely used in bearer networks.

True

False

207. What is the value of TPID defined by IEEE802.1Q?

0x9100

0x8200

0x7200

0x8100

208. ACL on AR G3 series routers supports two matching orders, configuration order and automatic order.

True

False

209. When a router forwards a datagram, every time it passes through a data link layer, the data link layer needs to be re-encapsulated.

True

False

210. Which of the following options is wrong? (Multiple choice)

[LSRA] mpls Isr-id 1.1.1.9

[LSRA] mpls

[LSRA] interface vlanif10

[LSRA-Vlanif10] mpls

[LSRA-Vlanif10] quit

[LSRA] static-Lsp ingiess SA to SD destination 4.4.4.9 32 next hop 10.1.1.2 out-label 20

The last command is to configure LSRA as the ingress interface LSR, and configure a static LSP

After the global mpls is enabled by mpls, there is no need to enable mpls again in the interface view

mpls lsr-id is the ID of the configured LSR, which is the prerequisite for configuring other MPLS commands, and is not configured by default.

mpls is to enable the mpls function in the system view and interface view, and the Isr-id can only be configured after enabling mpls

Page 22 of 26

211. FEC (Forwarding Equivalence Class) Forwarding Equivalence Class is a collection of data flows with certain commonality; FEC can be divided according to address, but not according to business type, QoS and other elements.

True

False

212. The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will definitely be forwarded from the port corresponding to the MAC.

True

False

213. Which stage in the campus network construction life cycle is the beginning of the project?

Network optimization

Network implementation

Network operation and maintenance

Network planning and design

214. Which statement about ASPF and Server-map is correct? (Multiple choice)

Server-map is usually only used to check the first message, and the message after the channel is established is still forwarded according to the session table

After the channel is established, the message is still forwarded according to the Server-map

The server-map entry will be deleted after a certain aging time because there is no packet match. This mechanism ensures that the relatively loose channel such as the Server-map entry can be deleted in time; it also ensures the security of the network. When a new data connection is subsequently initiated, the establishment of a Server-map entry will be re-triggered

Only ASPF will generate the Sever-map table

215. Which of the following statements about static routing is wrong?

Manual configuration by network administrator

Routing information needs to be exchanged between routers

Cannot automatically adapt to changes in network topology

Low requirements on system performance

216. Which of the following types of ACL cannot match network layer information?

Basic ACLs

Layer 2 ACL

User ACLs

Advanced ACL

217. In the RSTP protocol, when the root port fails, () will quickly switch to a new root port and immediately enter the forwarding state?

Forwarding port

Alternate port

Backup port

Edge port

218. Which of the following statements about default routing is correct? (Multiple choice)

If the destination address of the packet cannot match any other routing entry in the routing table, the router will forward the packet according to the default route

In the routing table, the default route appears as a route to network 0.0.0.0 (also with a mask of 0.0.0.0)

How a default route must exist in the routing table of a router

The default route can only be manually configured by the administrator

219. The ACL configuration information of a certain router is shown in the figure, which of the following statements is correct?

#

acl number 2000

rule 5 permit source 192.168.1.1 0

rule 10 deny source 192.158.1.1 0

#

The data packet whose source IP address is 192.168.1.254 is matched by the permit rule

Data packets with source IP addresses 192.168.1.1 and 192.168.1.254 are matched by the permit rule

The data packet whose source IP address is 192.168.1.1 is matched by the permit rule

The packet with the source IP address 192.168.1.1 is matched by the deny rule

220. Which fields in the IPv4 header are related to fragmentation? (Multiple choice)

Flags

TTL

Identification

Fragment Offset

Page 23 of 26

221. As shown in the figure, you only need to configure static routing on R1, and the two hosts can communicate with each other normally.

True

False

222. As shown in the figure, if host A has the ARP cache table of host B, host A can ping host B through.

True

False

223. Routing protocols can detect faults through Hello packets, so BFD is not needed.

True

False

224. Ethernet frames are processed and forwarded in the form of VLAN TAG inside the switch.

True

False

225. Which of the following features does the OSPF protocol have? (Multiple choice)

Division of Support Regions

Prone to routing loops

Calculate the shortest path by hops

Trigger update

226. The FIT AP can obtain the IP address of the AC through the DHCP Option to establish a CAPWAP tunnel. Which Option should be configured on the DHCP server?

Option 10

Option 55

Option 43

Option 82

227. The output information of the link aggregation port of a certain switch is shown in the figure. If you want to delete Eth-Trunk1, which of the following commands is correct?

interface GigabitEthernet0/0/2 undo eth-trunk quit undo interface Eth-Trunk 1

undo interface Eth-Trunk 1

interface GigabitEthernet0/0/1 undo eth-trunk quit undo interface Eth-Trunk 1

interface GigabitEthernet0/0/1 undo eth-trunk quit interface GigabitEthernet0/0/2 undo eth-trunk quit undo interface Eth-Trunk 1

228. Which one is correct about the configuration description on this switch? (Multiple choice)

[Quidway] dhcp enable

[Quidway] interface Vlanif 100

[Quidway-Vlanifl00] dhcp select relay

[Quidway-Vlanifl00] dhcp relay server-select dhcpgroup1

By default, the DHCP service must be enabled when configuring the DHCP server and DHCP delay

The VLAN IF100 interface will relay the received DHCP message to the external DHCP Server

Specify the DHCP server group as DHCP group for VLAN IF100 interface

First, you need to create a DHCP server group and add a DHCP server to the server group

By default, DHCP group1 will automatically add DHCP servers in the network

229. SRGB (segment routing global block) is a set of local labels reserved for the global segment. In MPLS and IPv6, SRGB is a set of local labels reserved for global labels.

True

False

230. What is the protocol number corresponding to the OSPF protocol at the network layer?

Page 24 of 26

231. When congestion occurs, which indicators of QoS are usually affected? (Multiple choice)

Transmission delay

Transmission Jitter

Transmission bandwidth

Transmission distance

232. which of the following service priority description in DSCP is correct?

AF has priority over EH

The packet loss rate of AF11 is higher than that of AF12

CS has the highest priority

AF11 priority is higher than AF4

233. For a switch running the STP protocol, the port can be directly converted to the Disabled state in any state.

True

False

234. The Tos field is used for QoS marking in the IP message, and the first 6 bits of the Tos field are used to mark the DSCP.

True

False

235. Which statement about the TTL field in the IPv4 header is correct? (Multiple choice)

TTL value length is 80bit

Every time a packet passes through a Layer 3 device, the TTL value is reduced by 1

When there is a loop in the route, the TTL value can be used to prevent the data packet from being forwarded infinitely

The range of TTL value is 0-255

236. Which of the following statements about IPv6 anycast addresses is correct? (Multiple choice)

Anycast addresses and unicast addresses use the same address space

Provide redundancy for services

A packet whose destination address is an anycast address will be sent to the closest network interface in the sense of routing

Realize load sharing of services

237. There are hosts in a private network that need to access the Internet. In order to realize this requirement, which of the following configurations should the administrator do on the edge router of the network? (Multiple choice)

Default route

NAT

STP

DHCP

238. As shown in the figure, when the router uses the OSPF protocol at the same time, which one is the BDR in this network?

Router A

Router B

Router C

Router D

239. Which of the following statements about Hybrid ports is correct?

The Hybrid port can strip the tags of certain vlan frames in the direction of the outgoing port

When the Hybrid port sends a data frame, it must carry the vlan tag

Hybrid ports only receive data frames with vlan tag

Hybrid port does not require PVID

240. Which of the following parameters should be considered when electing the root port in STP? (Multiple choice)

The mac address of the port

Port priority

Port slot number, such as G0/0/1

Duplex mode of the port

The cost of the port reaching the root switch

Page 25 of 26

241. In the network shown in the figure, which of the following configurations can enable host A to access the Internet, but host B cannot? (Multiple choice)

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny source 100.0.12.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit source 100.0.13.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

242. By default, it takes at least 30 seconds for the port state in the STP protocol to change from Disabled to Forwarding state.

True

False

243. Which of the following parameters does LCP negotiation use to detect link loops and other abnormal conditions?

CHAP

MRU

Magic word

PAP

244. Switch stacking supports more than two devices, and multiple switches can be formed into a logical device through stacking.

True

False

245. A company applies for a class C IP address segment, which needs to be evenly distributed to 8 subsidiaries. The largest subsidiary has 14 computers. Different subsidiaries must be in different network segments. The subnet mask should be set to?

255.255.255.192

255.255.255.240

255.255.255.0

255.255.255.128

246. On a broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages.

True

False

247. Which category does the IPv6 address FE80::2E0:FCFF:FE6F:4F36 belong to?

Multicast address

Global Unicast Address

Link-local address

Anycast address

248. As shown in the figure, when the switch needs to forward the frame whose destination mac address is 5489-98ec-f011, which of the following descriptions is correct?

The switch will send a destination unreachable message to the source device

The switch does not find a matching entry in the mac address table, so it will drop the frame

The switch needs to send a request to discover the device with the mac address 5489-98ec-f011

The switch will flood the frame on all ports except the port that received the frame

249. The flow label field, source address field, and destination address field in IPv6 specify the forwarding path in the network for a specific data flow.

True

False

250. Which of the following commands can be used to check whether OSPR has correctly established a neighbor relationship?

display ospf interface

display ospf peer

display ospf neighbor

display ospf brief

Page 26 of 26

251. The output information of the router is shown in the figure, which of the following statements is wrong?

The broadcast address corresponding to the Ethernet0/0/0 interface is 10.0.12.255

The physical link of the Ethernet0/0/0 interface is normal

The MTU value of the Ethernet0/0/0 interface is 1480

The IP address of the Ethernet0/0/0 interface is 10.0.12.1/24

252. Which of the following IPv6 addresses are multicast addresses within the link range? (Multiple choice)

FF02::2

FF02::1

FF12::1

FF12::2

253. The ports of Trunk type and Hybrid type are processed in the same way when receiving data frames.

True

False

254. Among the following options, what is the necessary technology to enable a host with an IP address of 10.0.0.1 to access the Internet?

Static routing

Dynamic Routing

NAT

Route import

255. In the VAR application scenario, which functions of the AR router can be virtualized on the server? (Multiple choice)

Firewall

VOIP

NAT

VPN

256. After the switch running the RSTP protocol receives the BPDU with the TC set, it clears the MAC addresses learned by all ports.

True

False

257. Which of the following statements about prefix segment is wrong?

The prefix segment is used to identify the prefix of a destination address in the network (prefix)

The prefix segment needs to be manually configured

The prefix segment spreads to other network elements through IGP, globally visible and globally valid

prefix segment can be automatically assigned by IGP

258. In the 0SPF protocol, which of the following descriptions of DR is correct? (Multiple choice)

An adjacency relationship should also be established between DR and BDR

If the priority values of the two routers are equal, select the router with the larger Router ID as the DR

By default, all routers in this broadcast network will participate in DR election

If the priority values of the two routers are different, select the router with the lower priority value as the DR

259. The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following items is the possible reason? (Multiple choice)

The administrator user account has been disabled

The Telnet service of the AR2200 router has been disabled

The permission level of the administrator user account has been changed to 0

The administrator user account has been deleted

260. In the WLAN network architecture, a terminal device that supports the 802.11 standard is called?

Client

STA

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