H3C GB0-371-ENU 問題集

質問 1：
In the networking shown in the figure, the PIMSM protocol runs between RT1, RT2 and RT3, the RP is 1.1.1.1 RT3 is connected to the receiver, and IGMP is enabled on the corresponding interface, and the multicast source 2.2.2.2 is connected to View the unicast routing table on RT3 on RT2 as follows:
[RT3]display ip routing-table
Routing Tables: Public
Destinations: 11 Routes: 12
Destination/MaskProtoPreCost NextHop Interface
1.1.1.1/320SPF 10 1562 192.168.0.1 S0/2/0
2.2.2.2/320SPF 10 1562 192.168.2.1 so/2/1
127.0.0.0/8 Direct 00127.0.0.1 InLoopO
127.0.0.1/32Direct 00127.0.0.1 InLoopO
192.168.0.0/30Direct 00192.168.0.2 S0/2/0
192.168.0.1/32Direct 00192.168.0.1 S0/2/0
192.168.0.2/32Direct 00127.0.0.1 InLoopO
192.168.1.0/300SPF 10 3124 192.168.2.1 so/2/1
OSPF 10 3124 192.168.0.1 S0/2/0
192.168.2.0/30Direct 00192.168.2.2 so/2/1
192.168.2.1/32Direct 00192.168.2.1 so/2/1
192.168.2.2/32Direct 00127.0.0.1 InLoopO
Then, when the receiver (Receiver) sends a group join request, which of the following routers have (*, G) entries

A. RT2
B. RT1
C. RT3
正解：B,C

質問 2：
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 function enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet1/0/1 port is set to Forbidden on the switch SWA, and the display vlan command is executed on the SWB to view the VLAN existing on VL^SWB Yes (choose one or more)

A. VLAN1
B. VLAN20
C. VLAN 10
正解：A,B

質問 3：
Which statement is correct about the communication between switch VLANs?
A. The hosts in the VLAN divided by the switch can communicate, but the hosts in the VLAN cannot communicate
B. After the two-layer switch divides VLANs, hosts in different VLANs can communicate with the router by using an interface to connect the trunk port of the switch, and the router must support the 802.1Q protocol
C. After the three-layer switch divides VLANs, hosts in different VLANs can communicate. The method is that the three-layer switch creates a virtual three-layer VLAN interface for each VLAN, and the VLAN interface needs to be configured with the corresponding IP address
D. After the two-layer switch divides VLANs, hosts in different VLANs can use routers to realize communication. The method is that there is a physical interface and a physical connection between the router and each VLAN.
正解：A,B,C,D

質問 4：
In a large local area network, what are the functional layers of the network?
A. Core layer
B. Management
C. Convergence layer
D. Access layer
正解：A,C,D

質問 5：
Which of the following descriptions about remote port mirroring are correct?
A. Remote port mirroring must include the mirror source and destination switch
B. The ProbeVLAN of remote port mirroring should prohibit MAC address learning
C. The reflection port of remote port mirroring is essential
正解：A,B

質問 6：
The SNMP protocol adopts the C/S structure and gives UDP to realize the message transmission. In order to ensure the normal interaction of protocol messages between the network management workstation and SNMP, they all need to monitor the specific UDP port number. The following statement about them is correct.
A. The gateway workstation monitors UDP port 162, and the SNMP agent monitors UDP port 161
B. Both the network management workstation and the SNMP agent monitor UDP port 161
C. Both the gateway workstation and SNMP agent monitor UDP port 162
D. The gateway workstation monitors UDP port 161, and the SNMP agent monitors UDP port 162
正解：A

質問 7：
In the network connection as shown in the figure, SWA and SWB enable STP and Loopback-detection at the same time. Please confirm that the port status description of SWA and SWB is correct.
A. STP detects the existence of a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them
B. G1/0/1 of SWA may be blocked by STP detecting the existence of a loop
C. Between G1/0/2 and G1/0/3 of SWB, loopback-detection detects the existence of a loop and blocks one of them
正解：A

質問 8：
In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device, check the MAC address table on SWA, it will show that the PCB belongs to (choose one or more)

A. VLAN20
B. VLAN4
C. VLAN3
D. VLAN 10
E. VLAN2
F. VLAN 1
正解：C,D

質問 9：
In the PIM-DM network as shown in the figure, part of the unicast routing table of routers RT1 and RT2 is as follows:
<RT1>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
1.1.1.0/24xxxxP1-1 C1-110.1.1.1POI11
1.1.0.0/16xxxxP1-2 C1-210.1.1.1Port1
<RT2>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
1.1.1.0/24XXXX P2-1 C2-111.1.1.1Port2
1.1.1.1/32XXXX P2-2 C2-211.1.1.1Port2
Then, when routers RT1 and RT2 perform Assert, the winner should be

A. If P1-1=P2-1, C1-1=C2-1, then RT1 wins
B. If P1-1=P2-2, C1-1>C2-2, then RT2 wins
C. If P1-1<P2-1, C1-1<C2-1, RT1 wins
D. If P1-1<P2-2, C1-1<C2-2, RT2 wins
E. If P1-1=P2-2, C1-1=C2-2, then RT2 wins
F. If P1-1=P2-1, C1-1>C2-1, then RT1 wins
正解：B,E