最新H3CSE-Routing & Switching GB0-371-ENU考試題庫，H3C GB0-371-ENU課程的擬真試題下載

問題1
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 10

B. VLAN 1

C. VLAN20

正確答案: B,C

問題2
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. VLAN 10

C. VLAN 1

D. VLAN2

E. VLAN20

F. VLAN3

正確答案: E

問題3
The following statements about the PIM SM joining process are correct.

A. As long as the DR has a local receiver of multicast group G, the DR will periodically send join messages upstream

B. If there are still receivers in the shared network segment under the interface where the upstream router receives the pruning message, the receiver will send a group join message

C. Both PIMSM and PIM DM have a pruning veto process

D. When there is no receiver of multicast group G in the DR, the DR will send a pruning message to the upstream router

正確答案: A,B,C,D

問題4
Regarding the relationship between SuperVLAN and Sub VLAN, the following description is correct

A. SuperVLAN is equivalent to aggregating Sub VLANs so that all Sub VLANs share the same Layer 3 interface

B. SuperVLAN only establishes Layer 3 interfaces, responsible for Layer 3 forwarding of Sub VLAN

C. Sub VLAN only contains physical ports, and the internal host uses the address of the Super VLAN interface as the gateway

D. Although physical ports cannot be included in SuperVLAN configuration, after the mapping relationship between Super VLAN and Sub VLAN is established, the physical ports included in SubVLAN belong to Super VLAN

正確答案: A,B,C

問題5
Regarding the designation of the MSTP root bridge, the correct statement is

A. If not specified, the root bridge of all instances in the MST region is the root bridge of IST by default

B. Use the rootsecondary command to specify the backup root bridge in an instance. When the root bridge fails or is shut down, the backup root bridge can replace the root bridge and become the root bridge of the specified spanning tree instance

C. The rootprimary command can be used to specify the first preference in an instance. After the command is specified, the priority of the root bridge cannot be modified

D. If multiple backup root bridges are set, when the root bridge fails, the backup root bridge with the smallest MAC address will become the root of the specified MST instance

正確答案: A,B,C,D

問題6
Which types of mirroring groups supported by H3C S series switches include the following

A. Remode

B. Local

C. Remote-destination

D. Remote-source

正確答案: B,C,D

問題7
Regarding the multicast distribution tree model SPT, the correct statement below is ______.

A. Different multicast sources take themselves as the root and establish SPT independently

B. In the SPT model, the path taken by the multicast source to reach any receiver is optimal

C. Each router on the SPT will maintain (S, G) entries

D. Each router on the SPT will maintain (*, G) entries

正確答案: A,B,C

問題8
In the networking shown in the figure, the interconnection lines between RT1, RT2, RT3 and RT4 are all 1000Mbps links except for the 10Mbps link sharing the Ethernet part, and the four routers run OSPF protocol to make the routing interoperable. The PIMSM protocol is running between them, and the RP is 1.1.1.1. There are receivers on the downstream interfaces of RT1 and RT2, and IGMP is enabled on the corresponding interfaces. Then, when the receiver (Received) sends a group join request, which of the following routers exist (*, G) table entry

A. RT3

B. RT4

C. RT2

D. RT1

正確答案: A,B,C,D

問題9
Regarding the BPDU format of MSTP, the correct statement is

A. MSTI specifies that the port priority field is 2 bytes in length, including 1 byte of port priority and 1 byte of port number

B. The MSTI calculation process will use the timer value in RSTBPDU instead of carrying the timer parameter in each MSTI configuration message

C. MSTI specifies that the bridge priority field has a length of 8 bytes, including two bytes of bridge priority and 6 bytes of bridge MAC address

D. If the switch is not configured with VLAN to instance mapping, MSTBPDU will not carry any MSTI configuration message

正確答案: B,D

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