1.When the Trunk port send the data frame, how to deal with?

• A. When the VLAN ID is the same as the PVID of the port and is a VLAN ID allowed by the port, remove the Tag and send the message

• B. When the VLAN ID is different from the PVID of the port, the data frame is dropped

• C. When the VLAN ID is different from the PVID of the port, replace it with PVID forwarding

• D. When the VLAN ID is different from the PVID of the port, strip off the TAG and forward

2.How many bits are there in the VLAN ID in the VLAN format defined by IEEE802.1Q?

• A.12

• B.6

• C.10

• D.8

4.All ports on the root-bridge switch are designated ports.

• A.True

• B.False

5.In the configuration BPDU sent by the switch, which bridge ID is unlikely to appear?

• A.8192 00-01-02-03-04-CC

• B.4096 00-01-02-03-04-CC

• C.0 00-01-02-03-04-CC

• D.2048 00-01-02-03-04-CC

6. The number of VLANs that can be created using the commands "vlan batch 10 20" and "vlan batch 10 to 20" respectively is

• A.11 and 11

• B.11 and 2

• C.2 and 2

• D. 2 and 11

7.By default, the root path cost of the root bridge in the STP protocol must be 0.

• A.True

• B.False

8. The administrator wants all hosts to be unable to access the Internet between 8:00-17:00 every day, so which ACL rule needs to be bound to the traffic-filter outbound in the GO/0/1 interface allocation?

• A. time-range am9topm5 08:00 to working-day
  Acl number 2003
  rule 5 deny time-range am9topjni5

• B. time-range am9topm5 08:00 to 17:00 off-day
  #
  acl number 2004
  rule 5 permits time-range

• C. time-range am9topm5 08:00 to 17:00 daily
  acl number 2001
  rule 5 deny time-range am9topm5

• D. time-range am9topm5 07:00 to 18:00 daily
  Acl number 2002

10. On Huawei equipment, if you use aaa authentication for authorization. When the remote server does not respond, you can authorize from the network equipment side.

• A.True

• B.False

11.What percentage does the DHCP client expect to send the lease renewal message for the first time?

• A.0.5

• B.0.875

• C.1

• D.0.25

12. After the administrator successfully logs in to the router through Telnet, and finds that the router's interface IP address cannot be allocated, the possible reasons are ()

• A. The Telnet user level is incorrectly configured

• B. SNMP parameter is incorrectly configured

• C. The Telnet user authentication mode is incorrectly configured

• D. The administrator uses the telnet terminal software to prohibit the corresponding operation

13. vty configuration as shown in the figure, the user authority level is set to level 3.
[Huawei]user-interface vty o 14
[Huawei-ul-vtyo-14]acl 2000 inbound
[Huavei-ui-vtyo-14]user privilege level 3
[Huavei-ui-vtyo-14]authentication-node password Please configure the login password (maxim length 16):Huawei

• A.False

• B.True

14.When AP and AC are on different Layer 3 networks, what method is recommended for AP to discover AC? (Multiple Choice)

• A. Broadcasting method

• B. DNS

• C. DHCP

• D. Manually specified on AP

15. What frequency does IEEE 802.11n support? (Multiple Choice)

• A.2.5GHz

• B.2.4GHz

• C.5GHz

• D.6GHz

16.In IPv4 networks, AP supports static and DHCP methods to obtain IP addresses.

• A.True

• B.False

17. What is the maximum negotiation rate supported by the IEEE 802.llg standard?

• A.300Mbps

• B.150Mbps

• C.54Kbps

• D.1200Mbps

18. Which WLAN security policies support the link authentication method of Open mode? (Multiple
Choice)

• A. WPA2-802.IX

• B. WPA2-PSK

• C. WEP

• D .WPA

19.Which of the following SNMP packets are sent to the NMS by the Agent on the managed device?
A.Set-Request

• A.Set-Request

• B.Get-Request

• C.Get-Next-Request

• D.Response

20. Which field is added to the IPv6 packet header than the IPv4 packet header?

• A.Destination Address

• B.Flow Label

• C.Version

• D.Source Address

21.Which of the following statements about RA and RS in IPv6 are correct? (Multiple Choice)

• A. RS is used to reply address prefix information

• B. RA is used to request address prefix information

• C. RS is used to request address prefix information

• D. RA is used to reply address prefix information

22. Telnetlib is a module that implements the Telnet protocol that comes with Python.

• A.True

• B.False

23. The controller is the core component of SDN. The controller connects to the device through the southbound interface. Which of the following belong to the controller southbound protocol? (Multiple Choice)

• A.SNMP

• B.PCEP

• C.OpenFlow

• D.NETCONF

24.In the campus network, network reliability can be improved by using link aggregation and stacking technology.

• A.True

• B.False

25.Using the command mkdir test in the VRP operating platform, the system will create a directory named test.

• A.True

• B.False

27. Which of the following statements about the default route are correct? (Multiple Choice)

• A. If the destination address of the message cannot match any other routing entries in the routing table,
  the router will forward the message according to the default route

• B. There must be a default route in the routing table of any router

• C. The default route can only be manually configured by the administrator

• D. In the routing table, the default route appears as a route to the network 0.0.0.0 (the mask is also 0.0.0.0)

30. There are multiple route entries to the same destination network in the routing table. These routes are called:

• A. Sub-optimal routing

• B. Multi-path routing

• C. Default route

• D. Equal cost routing

31. The function of 0SPF hello message is (). (Multiple Choice)

• A. Neighbor discovery

• B. Maintain neighbor relations

• C. Update LSA information

• D. Synchronize the LSDB of the router

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

• A.True

• B.False

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

• A.32B

• B.60B

• C.20B

• D.64B

36. What is the priority value of the direct route entry?

• A.0

• B.30

• C.10

• D.20

39. The network administrator created VLAN 10 on the Layer 3 switch and configured an IP address under the virtual interface of the VLAN. When the command "display IP interface brief" is used to check the port status, it is found that the VLANIF 10 interface is in the downstate. What should be done to restore the VLANIF 10 interface to normal?

• A. Add an interface that must be Up and must be of type Trunk into VLAN 10

• B. Assign any physical interface to VLAN 10

• C. Assign a physical interface that must be Up to VLAN 10

• D. Use the command "undo shutdown" under VLANIF 10 interface

40.The output information of the sub-interface of a router aggregate port 1 is shown in the figure. Based on this information, which of the following statements are correct? (Multiple Choice)

[Router A]display Interface Eth-Trunk 1.100
Eth-Trunk1.100 current state : UP
Line protocol current state : UP
Last line protocol up time : 2019-03-04 10:22:40 UTC -08 :00
Description: HUAWEI, AR Series, Eth-Trunk1.100 Interface
Route Port, Hash arithmetic : According to SIP-XOR-DIP, Maximal BW: 2G, Current BW: 2G, The
Maximum Transmit Unit is 1500
Internet Address is 10.0.12.2/24
IP Sending Frames’ Format is PKTFIT ETENT 2.Hardware address 1s 00e0-fc3b-2015
Current system time: 2019-03-04 10:24:29 -08:00
Last 300 seconds input rate 0 bits/sec, 0 packets/sec
Last 300 seconds output rate 0 bits/sec, 0 packets/sec
Realtime 0 seconds input rate 0 bits/sec, 0 packets/sec
Realtime 0 seconds output rate 0 bits/sec, 0 packets/sec
Input: 6 packets, 574 bytes,
Output:7 packets, 638 bytes,
Input bandwidth utilization ;0%
Output bandwidth utilization :0%
————————————————————————————————
PortName Status Weight
————————————————————————————————
GigabitEthernet0/0/1 UP 1
GigabitEthernet0/0/2 UP 1
————————————————————————————————
The Number of Ports in Trunk : 2
The Number of UP Ports in Trunk : 2

• A. Two links exist on the aggregate port

• B. The IP address of the sub-interface of the aggregate port is 10.0.12.2/24

• C. The sub-interface number of the aggregate port is 100

• D. The sub-interface of the aggregate port carries VLAN TAG 100 when forwarding data frames

42. Which of the following does not be included in AAA?

• A.Authentication

• B.Accounting

• C.Authorization

• D.Audit

43. On Huawei ARG3 series routers, what authentication modes does AAA support? (Multiple Choice)

• A.802.1x

• B.Local

• C.None

• D.HWTACACS

44. 44.Which of the following protocols consist of the PPP protocol? (Multiple Choice)

• A.LCP

• B.PPPoE

• C.NCP

• D.Authentication protocol

45. Which of the following statements about Prefix Segment is wrong?

• A. Prefix Segment spreads to other network elements through the IGP protocol, which is globally visible
  and effective

• B. Prefix Segment needs to be configured manually

• C. Prefix Segment is used to identify a destination address prefix in the network (Prefix)

• D. Prefix Segment can be automatically allocated by IGP

46. The output information of a certain device is shown in the figure. Which of the following statements is correct? (Multiple Choice)

<Huawe1>display interface G1gabitEthernet 0/0/0
G1gabi tEthernet0/0/0 current state : UP
Line protocol current state : UP
Route Port, The Maximum Transmit Unit is 1000
The Internet Address is 10.0.12.2/24
IP Sending Frames' Format is PRTFMT ETENT_2.Hardware address is 00e0- fc22- 4fff
Port Mode: FORCE COPPER
Speed : 100.Loopback: NONE
Duplex: FULL,Negotiation: DISABLE
Md1 : AUTO
Last 300 seconds input rate 24 bits/sec, 0 packets/sec
Last 300 seconds output rate 24 bits/sec, 0 packets/sec

• A. The IP address of the interface is 10.0.12.2/24

• B. The MAC address of the interface is 00e0-fc22-4fff

• C. The working rate of this interface is 1Gbps

• D. The MTU value of this interface is 1000

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

• A. Physical layer

• B. Data link layer

• C. Network layer

• D. Transport layer

49.Which of the following statement about static routing in Huawei equipment is wrong?

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

• B. The default value of the static route priority is 60

• C. The range of the static route priority value is 1-255

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

50.Which of the following statements is correct?

• A. The router works at the physical layer

• B. The switch works at the physical layer

• C. The switch works at the network layer

• D. The router works at the network layer

50.Which of the following statements is correct?

• A. The router works at the physical layer

• B. The switch works at the physical layer

• C. The switch works at the network layer

• D. The router works at the network layer

51. On interfaces that use PPP as the data link layer protocol, you can configure static routes by specifying the next-hop address or outbound interface.

• A.True

• B.False

52. Which of the following description about the Layer 2 Ethernet switch is incorrect?

• A. It is necessary to make certain modifications to the layer 3 header of the forwarded message, and then
  forward it

• B. Able to learn MAC address

• C. Forward according to the Layer 2 header information of the Ethernet frame

• D. Layer 2 Ethernet switches work at the data link layer

54. What is the range of VLAN ID that users can use?

• A.1-4096

• B.1-4094

• C.0-4096

• D.0-4095

55. By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to NS?

• A.164

• B.163

• C.162

• D.161

57. What is the port number used by the FTP protocol control plane?

• A.23

• B.24

• C.21

• D.22

58. There is no channel overlap in the 14 available frequency bands in the 2.4GHz frequency band

• A.True

• B.False

59. After the link authentication is completed, the STA will continue to initiate link service negotiation. Which of the following messages is used to achieve the specific negotiation?

• A.Join

• B.Handshake

• C.Association

• D.Negotiate

60. The Layer 2 networking of WLAN means that the STA uses the AC as its gateway

• A.True

• B.False

61. What is the IEEE802.11 standard corresponding to Wi-F16?

• A.802.11au

• B.802.11ax

• C.802.11at

• D.802.11ac

62. Which of the following working modes are supported by Huawei Enterprise AP? (Multiple Choice)

• A.Local

• B.Cloud

• C.FIT

• D.FAT

63.Which of the following statements about Adjacency Segment is wrong?

• A. Adjacency Segment is identified by Adjacency Segment ID (SID)

• B. Adjacency Segment spreads to other network elements through IGP protocol, which is visible globally
  and effective locally

• C. Adjacency Segment must be configured manually

• D. Adjacency Segment is used to identify an adjacency of a node in the network

64. If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee?

• A.Authenticate-Reject

• B.Authenticate-Ack

• C.Authenticate-Nak

• D.Authenticate-Reply

65. Which version of the SNMP protocol below supports encryption features?

• A.SNMPv3

• B.SNMPv2c

• C.SNMPv1

• D.SNMPv2

66.SNMPv1 defines 5 protocol operations.

• A.True

• B.False

67. The IPv6 address 2001: ABEF: 224E: FFE2: BCC0: CD00: DDBE: 8D58 cannot be abbreviated.

• A.True

• B.False

68. The DHCPv6 server supports providing other configuration information such as DNS server address for the host.

• A.True

• B.False

69.Which planes of the following does a network device have? (Multiple choice)

• A. Control plane

• B. Business plane

• C. Data plane

• D. Management plane

70. Virtualization is the basis for the realization of NEV. Which of the following statements about the characteristics of virtualization is correct? (Multiple choice)

• A. Hardware independence: virtual machine and hardware decoupling, support virtual machine migration
  between servers.

• B. Encapsulation: All virtual machines share the operating system, and encapsulation is achieved through
  name spaces.

• C. Isolation: The virtual machines on the same physical server are isolated from each other

• D. Partition: You can run multiple virtual machines on a single physical server at the same time.

72. Which of the following description about the Router ID of OSPF is incorrect? (Multiple Choice)

• A. Router ID must be the IP address of an interface on the router

• B. The prerequisite for the normal operation of the OSPF protocol is that the router has a Router ID

• C. The Router ID must be manually configured

• D. The Router ID must be the same in the same area, and the Router ID in different areas can be different

73.Which of the following statements about direct routing is correct?

• A. Direct routing requires the administrator to manually configure the destination network and the next-hop address

• B. Direct route has lower priority than static route

• C. Direct route priority is lower than dynamic route

• D. Direct routing has the highest priority

74.What are the advantages of the OSPF protocol? (Multiple Choice)

• A. Division of support areas

• B. OSPF supports load sharing for equal-cost routes

• C. OSPF supports message authentication

• D. OSPF supports type-less inter-domain routing (CIDR)

75. The route entry 10.0.0.24/29 may be aggregated from which of the following subnet routes? (Multiple Choice)

• A.10.0.0.26/30

• B.10.0.0.23/30

• C.10.0.0.24/30

• D.10.0.0.28/30

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

• A.True

• B.False

77. If the Proto of a certain route information in the routing table is Direct, the priority of this route is set to 0.

• A.True

• B.False

78. What are the network types supported by the OSPF protocol? (Multiple Choice)

• A.Point-to-Point

• B.Non-Broadcast Multi-Access

• C.Point-to-Multipoint

• D.Broadcast

80.Which of the following is not the reason for RSTP improving the convergence speed?

• A. Introduction of edge ports

• B. Fast switching of the root port

• C. P/A mechanism

• D. Forward Delay canceled

84. The switch GO/0/1 port configuration information is shown in the figure. Which VLAN data frame does the switch forward without VLAN TAG?

#
interface GigabitEtherneto/o/1
port link-type trunk
port trunk pvid vlan 10
port trunk allow-pass vlan 10 20 304o
#

• A.10

• B.30

• C.20

• D.40

85.When the Access type port sends a message, it will ().

• A. Send messages with tag

• B. Strip the VLAN information of the message, and then send it out

• C. Type the PVID information of this port, and then send it out

• D. Add the ZLAN message of the message, and then send it out

86.The configuration information of a certain port of the switch is shown in the figure, then this port carries VLAN TAG when sending data frames carrying which VLAN?
interface GigabitEtherneto/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6
#

• A. 1,2.3,100

• B. 2.3.100

• C. 1,2.3.4.6,100

• D. 2.3.4.6,100

87. What is the value of the Type field in the RStp configuration BPDU message?

• A.Ox01

• B.ox00

• C.ox02

• D.ox03

88. The Priority field in the VLAN tag can identify the priority of the data frame. What is the range of this priority?

• A.0-15

• B.0-63

• C.0-3

• D.0-7

89. What elements can NAPT convert?

• A. Only MAC address

• B. IP address + port number

• C. MAC address + port number

• D. Only IP address

92. A network engineer prompts the following information when entering the command line: Error: Unrecognized command found at ‘^’position. Which of the prompt information is correct?

• A. The input command is incomplete

• B. Wrong parameter type

• C. No keyword found

• D. Input command is not clear

93.<huawei>system-view
[huawei]command-privilege level 3 view user save
The correct statement about the above configuration command is:

• A. Modify the user's authority level to 3, and save the configuration

• B. Modify the permission level of the user view command to 3, and save the configuration

• C. Modify the authority level of the save command used by a user to 3

• D. Modify the permission level of the save command in the user view to 3

94.Which of the following descriptions about the switch is wrong?

• A. The switch can complete the exchange of data frames

• B. The switch can provide network access services for terminal equipment (PC. Server)

• C. Switches generally work at the data link layer

• D. Switches are generally used as network export equipment

95.Which of the following descriptions about firewalls is wrong?

• A. Firewall can realize user identity authentication

• B. Firewall can realize access control between different networks

• C. Firewall can isolate networks with different security levels

• D. The firewall cannot achieve network address translation

96. What kind of message does the OSPF protocol use to discover and maintain neighbor relationships?

• A.DD

• B.LSR

• C.LSU

• D.HELLO

97.On the VRP platform, the default protocol priority of routes in the direct routing, static routing, RIP, OSPF area is:

• A. Direct routing,OSPF,Static routing,RIP

• B. Direct routing,Static routing,RIP,OSPF

• C. Direct routing,RIP,Static routing,OSPF

• D. Direct routing,OSPF,RIP,Static routing

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

• A.20

• B.10

• C.30

• D.0

100. Now there are the following four 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? (Multiple Choice)

• A.10.24.1.0/23

• B.0.0.0.0/0

• C.10.24.0.0/22

• D.10.24.0.0/21

101. Which fields in the IPv4 header are related to fragmentation? (Multiple Choice)

• A.TTL

• B.Fragment Offset

• C.Identification

• D.Flags

102.As shown in the figure below, which of the following statements are correct?

Host A-----------------------------------------Host B
Ip 10.0.12.1/30 Ip 10.0.12.5/24
Mac. Mac A Mac. Mac B

• A. Host A can ping host B

• B. Host A and Host B cannot obtain each other's MAC address

• C. The following entry 10.0.12.5 MAC-B exists in the ARP cache of host A

• D. The broadcast address of host A and host B are the same

105. When Huawei switches allow STP, the priority of the switch is by default:

• A.32768

• B.8192

• C.16384

• D.4096

107.What is the Solicited-node multicast address corresponding to IPv6 address 2019:: 8:AB?

• A.FF02：：1：：FF08：AB

• B.FF02：：FF08：AB

• C.FF02：：1：：FF20：19

• D.FF02：：1：：FE08：AB

109.Which statement about SNMP protocol is correct?

• A. SNMP uses UDP as the transport layer protocol

• B. SNMP uses ICMP as the network layer protocol

• C. SNMP protocol uses multicast to send management messages

• D. The SNMP protocol only supports the sending of flash management messages on the Ethernet link

110. Which of the following commands can be used to view the router's CPU usage?

• A.display cpu-state

• B.display interface

• C.display memory

• D.display cpu-usage

111. Which of the following messages are used for IPv6 stateless address autoconfiguration? (Multiple Choice)

• A.NS

• B.RA

• C.NA

• D.RS

112. Which of the following IPv6 addresses is a multicast address

• A.FE80：：2E0：FCFF：FEEF：FEC

• B.FC00：：2E0：FCFF：FEEF：FEC

• C.FF02：：2E0：FCFF：FEEF：FEC

• D.2000：：2E0：FCFF：FEEF：FEC

113.Which of the following statements about IPv6 address configuration are correct? (Multiple Choice)

• A. IPv6 supports stateless automatic configuration

• B. IPv6 address supports automatic configuration in multiple ways

• C. IPv6 supports DHCPv6 for address configuration

• D. IPv6 address can only be configured manually

114. A device has been configured to complete the Telnet configuration. The device login address is 10.1.1.10. The Telnet user name is admin and the password is Huawei@123. Which of the following is the correct way to log in to this device using telnetlib?

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

• B.telnetlib.Telnet（10.1.1.0）

• C.telnetlib.Telnet（10.1.1.0,23, Huawei@123）

• D.telnetlib.Telnet（10.1.1.0,admin）

115.The classic network forwarding method is based on router routing table forwarding. The forwarding method of OpenFlow switches is based on flow table forwarding. Which of these two forwarding methods are correct? (Multiple Choice)

• A. The routing table is of fixed length. A device can only have one public routing table

• B. The flow table is variable length. A network device can only have one flow table

• C. The matching method of the flow table is to match the MAC address and IP address of the traffic at the
  same time

• D. The matching method of the address table is to match the route of the destination network segment with the longest mask

117.In the OSPF broadcast network, which routers will a Dothter router exchange link state information with? (Multiple Choice)

• A. BDR

• B. All OSPF neighbors

• C. DR Other

• D. DR

118.Which of the following IPv4 addresses the host uses cannot directly access the Internet?

• A.100.1.1.1

• B.50.1.1.1

• C.10.1.1.1

• D.200.1.1.1

119. What kind of message does the OSPF protocol use to confirm the received LSU message?

• A.LSU

• B.LSR

• C.LSACK

• D.LSA

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

• A. Speed up port role election

• B. Through the synchronization mechanism to ensure that no temporary loop occurs

• C. Edge ports are introduced

• D. Shorten the time of Forward Delay

122.Which of the following statements about router-on-a-stick are correct? (Multiple Choice)

• A. Use only one physical link connection between the switch and the router

• B. Need to create a sub-interface on the router

• C. One physical connection per VLAN

• D. On the switch, configure the port connected to the router as a Trunk port, and allow frames of the relevant VLAN to pass

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

• A. Designated port

• B. Root port

• C. Backup port

• D. Preparation port

128.f a windows host is started for the first time, if the IP address is obtained by DHCP, then what is the source IP address of the first packet sent by this host?

• A.127.0.0.1

• B.169.254.2.33

• C.0.0.0.0

• D.255.255.255.255

129.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 is not included in the method of obtaining the IP address of the AC by the FIT AP?

• A. Broadcasting method

• B. Static designation method on AP

• C. Multicast mode

• D. DHCP Option mode

130.How to add AP on AC? (Multiple Choice)

• A. Add online

• B. Automatically discover AP

• C. Import AP offline

• D. Manually confirm APs in the uncertified list

131. Which of the following messages is used by AP to request software version from AC?

• A.VRP System Request

• B.Software Request

• C.Image Data Request

• D.Image package Request

133. To query the configuration information of the device's OSPF protocol, which of the following commands can be used? (Multiple Choice)

• A.display ospf peer

• B. Enter the command "display this" in the OSPF protocol view

• C.display current-configuration

• D.dis ip routing-table

134.Which of the following does not include in VRP system login method?

• A.Telnet

• B.Netstream

• C.SSH

• D.web

135.In which view can the administrator modify the device name for the router?

• A.User-view

• B.Protocol-view

• C.System-view

• D.Interface-view

137.If the application layer protocol is Te1net, what is the value of the Protoco1 field in the IPv4 header?

• A.23

• B.17

• C.6

• D.67

139.Which layer of the OSI reference model does the router work at?

• A. Data link layer

• B. Transport layer

• C. Application layer

• D. Network layer

140. VRP operating platform, which of the following commands can only view static routes?

• A.display ip routing-table statistics

• B.display ip routing-table verbose

• C.display ip routing-table

• D.display ip routing-table protocol static

141. Which OSPF version below is suitable for IPv6?

• A.OSPFv1

• B.OSPFv2

• C.OSPFv3

• D.OSPFv4

142.IP route-static 10.0.2.2 255.255.255.255 10.0.12.2 preference 20. Which is correct about this command? (Multiple Choice)

• A. The NextHop of this route is 10.0.12.2

• B. The priority of this route is 20

• C. This route can guide the forwarding of packets with the destination IP address 10.0.2.2.

• D. This route can guide the forwarding of packets with the destination IP address 10.0.12.2

143.What are the following characteristics of the default VLAN in the Layer 2 Ethernet switch? (Multiple Choice)

• A. The default VLAN cannot be deleted manually

• B. By default, all ports of the switch are member ports of the default VLAN

• C. A default VLAN must be created before it can be assigned a port

• D. The IP address configured on the switch will only be applied to the member ports of the default VLAN

145. On which layer of the OSI reference model does the Ethernet switch work?

• A. Network layer

• B. Data link layer

• C. Physical layer

• D. Transport layer

146. The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge ID switches will become the root bridge?

• A.4096 00-01-02-03-04-DD

• B.32768 00-01-02-03-04-AA

• C.32768 00-01-02-03-04-CC

• D.32768 00-01-02-03-04-BB

148. Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology? (Multiple Choice)

• A. Improve safety

• B. Realize load sharing

• C. Increase bandwidth

• D. Improve reliability

149. 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", the correct description below is ().

[RTA]aaa
[RTA-aaa]domain Huawei
RTA-aaa-domain-huawei]authentication-s cheme aul
[RTA-aaa-domain-huawei]authentication-scheme au2

• A. "authentication-scheme aul" authentication will be used, if "au1" is deleted, "au2" authentication will be used

• B. Will use "au2" authentication and will use "authentication-scheme au1" authentication

• C. Will use "authentication-scheme au2" authentication

• D. "authentication-scheme au2" authentication will be used, if "au2" is registered, "aul" authentication will
  be used

152. The correct description of the information as shown in the figure is ().

[R1]display interface go/0/o
GigabitEthernet0/0/0 current state: Administratively DOWN Line protocol current state: DOWN

• A. The GigabitEthernet 0/0/0 interface was manually closed by the administrator

• B. GigabitEthernet 0/0/0 interface does not enable dynamic routing protocol

• C. The GigabitEthernet 0/0/0 interface is not configured with an IP address

• D. GigabitEthernet 0/0/0 interface is connected to a wrong cable

154. What is the total length of the IPv6 address in bits?

• A.96

• B.64

• C.32

• D.128

155. The IPv4 address assigned by the network administrator to a host in the network is 192.168.1.1/28. How many hosts can be added to the network where this host is located?

• A.12

• B.15

• C.13

• D.14

158. Which of the following statements about IPv6 multicast addresses are correct? (Multiple Choice)

• A. Provide redundant functions for services

• B. Realize load sharing of services

• C. The packet whose destination address is a multicast address will be sent to the nearest network interface in the sense of routing

• D. Multicast addresses and unicast addresses use the same address space

159. What is the number range of advanced ACL?

• A.3000-3999

• B.2000-2999

• C.4000~～4999

• D.6000~6031

161. In which of the following network types does the OSPF protocol need to elect DR and BDR? (Multiple choice)

• A. Point to multipoint

• B. NBMA

• C. Point-to-point type

• D. Broadcast type

162. By default, how long is the lease period of the IP address assigned by the DHCP server?

• A.12h

• B.1h

• C.24h

• D.18h

163. When deploying ACL on Huawei devices, which of the following description is correct? (Multiple choice)

• A. ACL can match the TCP/UDP port number of the message, and can specify the range of port numbers

• B. The same ACL can be called under multiple interfaces

• C. When ACL defines rules, it can only proceed in the order of 10, 20, and 30

• D. ACL cannot be used to filter OSPF traffic, because OSPF traffic does not use UDP protocol encapsulation

• E. When calling ACL under the interface, it can only be applied to the outbound direction

165. Which parameter is used in the spanning tree protocol for root bridge election?

• A. Port ID

• B. Bridge priority

• C. Root path cost

• D. Bridge ID

167. Now it is necessary to implement a Python automation script Te1net to the device to view the device running configuration. Which of the following statements is wrong?

• A. Telnetlib can achieve this function.

• B. Use telnet.Telnet (host) to connect to the Telnet server.

• C. can use telnet.write(b"display current-configuration \n") to input the command to view the current configuration of the device.

• D. telnet.c1ose() is used after a command entered every time, the function is that the user waits for the switch to return information.

168. The network administrator of a certain company wants to uniformly divide the users who often access the company network from different switches into VLAN 10 when they frequently change office locations. Which of the following methods should be used to divide VLANs?

• A. Divide VLAN based on protocol

• B. Divide VLAN based on MAC address

• C. Divide VLAN based on port

• D. Divide VLAN based on subnet

170. The administrator plans to implement route backup by configuring static floating routes, what is the correct way to achieve this?

• A. The administrator needs to configure different metric values for the main static route and the standby static route

• B. The administrator needs to configure different TAGs for the main static route and the standby static route

• C. The administrator only needs to configure two static routes

• D. The administrator needs to configure different protocol priority values for the main static route and the
  standby static route

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

• A. Default route

• B.STP

• C.DHCP

• D.NAT

172. Which of the following descriptions about Trunk port and Access port is correct?

• A. Trunk port can only send untagged frames

• B. Access port can only send untagged frames

• C. Access port can only send tagged frames

• D. Trunk port can only send tagged frames

173. Which of the following statements about the division of OSPF protocol area is wrong?

• A. Area 0 is the backbone area, and other areas must be connected to this area

• B. The LSDBs in the routers in the same OSPF area are completely consistent

• C. Dividing OSPF areas can reduce the LSDB scale of some routers

• D. Only ABR can be used as ASBR

176. The administrator cannot log in to the Huawei router through Telnett, but other administrators can log in normally, so which of the following are the possible reasons? (Multiple Choice)

• A. The authority level of the administrator user account has been modified to 0

• B. The administrator user account has been disabled

• C. The Te1net service of the AR2200 router has been disabled

• D. The administrator user account has been deleted

177. VRP operating system commands are divided into 4 levels: access level, Monitoring level, Configuration level, and Management level. Which level can run various business configuration commands but cannot operate the file system?

• A. Configuration level

• B. Monitoring level

• C. Access level

• D. Management leve

180. In what state does the OSPF protocol determine the master-slave relationship of DD packets?

• A.ExStart

• B.Full

• C.2-way

• D.Exchange

183. If the Length/Type of an Ethernet data frame = 0x8100, which of the following statements is correct?