[2026] H3C Constructing H3C High-Performance Campus Networks

문제1

The customer's LAN switch SWA is connected to SWB through GigabitEthenet 2/0/1, and to SWC through GigabitEthernet 2/0/2, and the SWA switch has the following configuration:
[SWA]stp region-configuration
[SWA-mst-region]instance 0 vlan 1 to 100
[SWA-mst-region]instance 2 vlan 101 to 200
[SWA]smart-link group 1
[SWA-smlk-group1 ]protected-vlan reference-instance 0
[SWA-smlk-group1]port gigabitethernet 2/0/1 master
[SWA-smlk-group1 ]port gigabitethernet 2/0/2 slave
[SWA] smart-link group 2
[SWA-smlk-group2]protected-vlan reference-instance 2
[SWA-smlk-group2]port gigabitethernet 2/0/2 master
[SWA-smlk-group2]port gigabitethernet 2/0/1 slave
If the SWA, SWB, and SWC ports allow all VLANs to pass, you can know from the above information

A. SWA switch VLAN 102 traffic will be uplinked through GigabitEthe 2/0/2

B. SWA switch VLAN 102 traffic will be uplinked through Gigabitethernet 2/0/1

C. SWA switch VLAN2 traffic will be uplinked through Gigabitethernet 2/0/2

D. SWA switch VLAN2 traffic will be uplinked through GigabitEthernet 2/0/1

정답: A,D

문제2

The following are functions of the convergence layer (choose one or more)

A. Possess a large number of interfaces for connecting with end user computers

B. Access security control

C. Complex routing strategy

D. High-speed packet switching

정답: C

문제3

In the network shown in the figure, the corresponding configuration is completed on the switch SWA, and the switch SWA and each PC have learned the corresponding ARP table entry. When PCA accesses the PCB, an ICMP request message is sent, and the destination IP address of the message is

A. 20.1.1.2

B. 20.1.1.1

C. 10.1.1.1

D. 10.1.1.2

정답: A

문제4

In the network as shown in the figure, after completing the corresponding configuration on the switch SWA, when the switch SWA receives the data frame from the PCA to access the PCB, it will judge whether to check the MAC address table or the routing table according to it.

A. Source MAC address of the data frame

B. VLAN attributes of data frames

C. Source MAC address of the data frame

D. Destination MAC address of the data frame

E. The source IP address of the data frame

정답: D

문제5

In the switching network as shown in the figure, VLAN10 is set to Isolate-userW, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10 on the switch SWA; VLAN2 VLAN20 is created on the switch SWB, and VLAN20 is set to Isolate-user-vlan, and VLAN4 is After setting the IP address of each device as shown in the figure for the Secondary VLAN of VLAN20, check the MAC address table on the SWB to determine that SWA belongs to

A. VLAN4

B. VLAN3

C. VLAN2

D. VLAN 1

E. VLAN20

F. VLAN 10

정답: E

문제6

In the switching network as shown in the figure, all three switches only have the default VLAN 1, the interconnection ports of the three switches are Trunk, and all VLANs are allowed to pass, and the three switches have the global and port GVRP function enabled. VLAN 10 is created on the switch SVVA, VLAN 20 is created on the switch SWC, check the status information of each Trunk port on the three switches, the correct one is displayed below (choose one or more)

A. [SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

B. [SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

C. [SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

D. [SWA]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

정답: B

문제7

As shown in the diagram, SWA, SWB and SWC enable STP. If the bridge priority of SWA is set to 61440 after topology convergence, the following statements are correct.

A. The topology will re-converge after 30 seconds by default

B. After the priority is adjusted, SWA will still send configuration BPDUs with itself as the root.

C. After SWC receives a low priority configuration BPDU, it will immediately respond to a configuration BPDU with itself as the root

D. After the configuration BPDU saved locally by the SWB ages, it will send the configuration BPDU rooted to the SWA

정답: B,D

문제8

The multicast IP address is 229.130.130.1, and the corresponding mac address is:

정답:

01-00-5e-02-82-01

문제9

In the switching network as shown in the figure, all three switches have only default VLAN1, the interconnection ports of the three switches are Trunk, and all VLANs are allowed to pass, and the three switches have the global and port GVRP functions enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet 1/0/1 port is set to Forbidden on the switch SWA, and the display vlan SWC is executed on the SWC. The existing VLANs on SWC are available (choose one or Multiple)

A. VLAN 1

B. VLAN20

C. VLAN 10

정답: A,B

문제10

The following statements about RP selection in PIMSM are correct:

A. Finally compare the C-RP addresses, the one with the larger value wins

B. Different RPs must be selected for two different multicast groups

C. Compare the hash value calculated by the Hash function, the larger value wins

D. First compare the priority of C-RP, the higher priority wins

정답: A,C,D

문제11

In the switching network as shown in the figure, VLAN 10 is set as Super VLAN on the switch SWA, VLAN 2 and VLAN 3 are Sub VLANs of VLAN 10, Port Ethernet1/0/3 is a Trunk port, PVID is VLAN 1, allowing all VLANs to pass ; Create VLAN2~VLAN20 on the switch SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to pass, after setting the IP address of each device as shown in the figure, the following statement is correct

A. The PCC packet comes out of the Ethernet1/0/4 port of SWB and enters the Ethernet1/0/3 port of SWA. The VLAN tag carried is VLAN 1

B. The PCC message comes out of the Ethernet1/0/4 port of SWB and enters the Ethernet1/0/3 port of SWA, and the VLAN tag carried is VLAN2

C. The PCC message comes out of the SWB's Ethernet1/0/4 port and enters the SWA's Ethernet1/0/3 port, and the VLAN tag carried is VLAN3

D. The PCC message comes out of the SWB's Ethernet1/0/4 port, and after entering the SWA's Ethernet1/0/3 port, the VLAN tag carried is VLAN 10

정답: B

문제12

There are multiple IGMPv2 group member hosts (Client1/Client2/Client3) in the shared network segment, and multiple IGMPv2 routers (Router1/Router2), as shown in the following figure:
||192.168.207.254 192.168.207.253
|| Router1 Router2
||+++++
||111
|| III
||Clientl Client2 Client3
||192.168.207.1 192.168.207.2192.168.207.3 Then, the following statement is correct

A. Routerl and Router2 periodically send general group queries to the shared network segment

B. After the host receives the query message, only Client1 sends the Report message

C. Only Router2 periodically sends general group queries to the shared network segment

D. After the host receives the general group query message, Clientl sending the Report message for joining Group A will not inhibit the Report message for Client2 joining Group B

E. Only Router1 periodically sends general group queries to the shared network segment

F. After the host receives the general group query message, Client1, Client2, and Client3 may all send the corresponding

정답: C,D,F

문제13

The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1. If the switches SWB, SWC and SWD form sub-ring 2, the above information can be derived

A. If the switch SWA is the master node of the primary ring, it can initiate Link-Down packets

B. If the switch SWB is the edge node of the sub-ring, it can initiate Maior-Fault packets

C. If the switch SWA is the master node of the primary ring, it can initiate a Health message

D. If the switch SWB is the edge node of the sub-ring, it can initiate Edge-Hello packets

정답: C,D

문제14

After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:
[SWA]display interface Ethernet 1/0/1
Ethernetl/0/1 current state: UP
PVID: 10
Mdi type: auto
Link delay is 0(sec)
Port link-type: trunk
VLAN passing: 1 (default vlan), 10
VLAN permitted: 1 (default vlan), 2-4094
Trunk port encapsulation: IEEE 802.1q
Port priority: 0
It can be judged from the above output

A. Data frames with VLAN1 tags will be stripped of tags when they leave port Ethernet1/0/1

B. Data frames with VLAN20 tags can be forwarded from port Ethernet1/0/1

C. Port Ethernet1/0/1 is a Trunk port, allowing all VLAN data to pass through

D. Data frames with VLAN10 tags will not be discarded when entering port Ethernet1/0/1

정답: C,D

문제15

The following are core layer functions (choose one or more)

A. Possess a large number of interfaces for connecting with end user computers

B. Access security control

C. High-speed packet switching

D. Necessary routing strategy

정답: C,D

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