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H3C Constructing H3C High-Performance Campus Networks Sample Questions:

1. In the switching network as shown in the figure, set VLAN10 as Isolate-user-vlan VLAN2 and VLAN3 as the Secondary VLAN of VLAN10 on the switch SWA. VLAN10 virtual interface link layer UP on the following switch SWA? (Select one or more )

A) GigabitEthernet1/0/3 port is up
B) GigabitEthernet1/0/2 port UP
C) GigabitEthernet1/0/1 port is up
D) GigabitEthernet1/0/1, GigabitEthernet1/0/2 and GigabitEthem1/0/3 are all up

2. Regarding the working principle of IGMP-Snooping, the correct one is

A) IGMP-Snooping determines the routing port by listening to IGMPQuery messages
B) Layer 2 devices rely on IGMP-sliooping to listen to IGMP messages and maintain multicast address forwarding entries at Layer 2.
C) By listening to IGMPReport messages, IGMP-Snooping adds ports to known multicast groups or creates new multicast forwarding entries

3. The IP address of the host PCA is 40.1.1.1 and the MAC address is 0011.1111.11, which is connected to the GigabitEthernet 1/0/1 port of the switch. The following commands are configured on the switch:
[H3C]vlan 10
[H3C-vlan10]quit
[H3C]vlan 20
[H3C-vlan20]protocol-vlan ipv4
[H3C-vlan20]quit
[H3C]vlan 30
[H3C-vlan30]quit
[H3C]mac-vlan mac-address 0022-2222-2222 vlan 30
[H3C]vlan 40
[H3C-vlan40]ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[H3C-vlan40]quit
[H3C]interface GigabitEthernet 1/0/1
[H3C-GigabitEthernet1/0/1]port link-type hybrid
[H3C-GigabitEthernet1/0/1]port hybrid pvid vlan 10
[H3C-GigabitEthernet1/0/1]port hybrid vlan 10 20 30 40 untagged
[H3C-GigabitEthernet1/0/1]port hybrid protocol-vlan vlan 20 0
[H3C-GigabitEthernet1/0/1]port hybrid ip-subnet-vlan vlan 40
[H3C-GigabitEthernet1 /0/1 ]mac-vlan enable
After the configuration is complete, it can be judged that PCA will join

A) VLAN20
B) VLAN 10
C) VLAN40
D) VLAN30

4. Routers running PIM-DM will periodically send Hello messages to discover neighbors, establish and maintain neighbor relationships. The following descriptions of Hello messages are correct. __

A) If Hello messages have the same priority, the router with the larger interface IP address will become the DR
B) All PIM routers are members of the 224.0.0.13 multicast group
C) The router sends PIM Hello in multicast mode, the destination address is 224.0.0.13
D) When the DR is elected, the router with the higher priority of the Hello message will become the DR
E) When the router runs IGMPV2, the DR is elected for the shared network segment through the PIMHello message, and the DR serves as the Querier of IGMP

5. The switches SWA and SWB are connected together through two optical fiber Gigabit Ethernet links, and the switch SWA has the following interface configuration:
[SWA]interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1]gvrp
[SWA-GigabitEthernet1/0/1]port link-type trunk
[SWA-GigabitEthernet1/0/1]port trunk permit vlan 1 10
[SWA]interface GigabitEthernet 1/0/2
[SWA-GigabitEthernet1/0/2]port link-type trunk
[SWA-GigabitEthernet1/0/2]port trunk permit vlan 1 10
If you want to configure link aggregation to aggregate these two links together, if the configuration on the SWB is correct, you can know from the above information

A) After link aggregation is configured on both SWA and SWB, if both SWA and SWB enable MSTP on the aggregation port, GigabitEthernet1/0/1 and GigabitEthe1/0/2 can participate in forwarding
B) Only when GigabitEthernet1/0/2 and Gigabit1/0/1 allow all VLANs to pass, they can join the same aggregation group
C) Only by changing the configuration of GigabitEthe1/0/2 to be consistent with GigabitEthe1/0/1, can they join the same aggregation group
D) After link aggregation is configured on SWASWB, if both SWA and SWB enable MSTP on the aggregation port, one of GigabitEthe1/0/1 and GigabitEthe1/0/2 will be blocked

Solutions: