H3C GB0-371-ENU 問題集

質問 1：
The router runs the IGMPV2 protocol, and the GroupAddress in the Query message received by the host in the directly connected LAN may be (choose one or more)
A. 225.1.1.1
B. 224.0.0.2
C. 0.0.0.0
D. 255.255.255.255
E. 224.0.0.1
正解：A,C

質問 2：
The Ethemet1/0/1 port configuration of the switch SWA is as follows:
interface Ethernet 1/0/1
port link-type trunk
port trunk permit vlan 10
port trunk pvid vlan 20
Now you need to modify the Ethernet 1/0/1 port of the switch SWA to a Hybrid port, the PVID is VLAN20, and the data frame of VLAN10 is tagged, then the following configuration process is correct (choose one or more)
A. None of the above is correct
B. [SWA-Ethernet1/0/1]undoportlink-type [SWA-Ethernet1 /0/1 ]portlink-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
C. [SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
D. [SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port access vlan 20 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged
E. [SWA-Ethernet1/0/1]port link-type hybrid
正解：B,C,D

質問 3：
Which of the following aspects should be considered for the security of the campus network?
A. Effective access control
B. Effectively identify legal and illegal users
C. Protect the physical circuit
D. Effective management of network equipment and network topology
正解：A,B,C,D

質問 4：
The following statements about the STP protocol are correct
A. The port in STP must pass two ForwardDelays from Blocking to Forwarding before data can be sent.
B. If there are a large number of hosts in the STP network, frequent online and offline of the hosts will generate a large number of TCN BPDUs
C. When the topology changes frequently, some ports are often in Blocking state, which may cause long-term network interruption
D. All VLANs in the STP network share a spanning tree, and load sharing of different VLANs on Trunk links cannot be realized.
正解：A,B,C,D

質問 5：
The customer's LAN switch SWA dual uplink connects the switch SWB and the switch SWC, and the link reliability is ensured through SmartLink. If the MAC address of the switch SWA device is 000f-e269-42d1 and the MAC address of the switch SWB device is 000f-e269-42d2, the switch The MAC address of the SWC device is 000f-e269-42d3 from the above information.
A. When the switch SWA is connected to the switch SWB line failure, the purpose of the Flush packet sent by the switch SWA mac is 000f-e269-42d1
B. When the switch SWA is connected to the switch SWB line failure, the purpose of the switch SWA to send the Flush message mac is 000f-e269-42d2
C. When the switch SWA is connected to the switch SWB line failure, the purpose of the Flush packet sent by the switch SWA mac is 000f-e269-42d3
D. None of the above answers are correct
正解：D

質問 6：
What is correct about the STP root bridge?
A. All ports on the root bridge are fixed ports
B. The root bridge refers to the bridge with the highest priority on a PhysicalSegment
C. There is no root port on the root bridge
D. Alternate ports may exist on the root bridge
正解：C,D

質問 7：
The three routers RTA, RTB, and RTC are connected together via a LAN to form a VRRP backup group. The interface configuration of each router is as follows:
RTA's GigabitEthernet ip address 192.168.0.252 255.255.255.0 vrrp vrid 1 virtual-ip 192.168.0.254 vrrp vrid 1 priority 120 RTB's GigabitEthernet ip address 192.168.0.253 255.255.255.0 vrrp vrid 1 virtual-ip 192.168.0.254 vrrp vrid 1 priority 90 RTC's GigabitEthernet ip address 192.168.0.254 255.255.255.0 vrrp vrid 1 virtual-ip 192.168.0.254
It can be known from the above information
A. RTA is the master router of the backup group
B. After RTA is sent, RTB is the master router of the backup group
C. RTC is the master router of the backup group
D. RTB is the master router of the backup group
正解：C

質問 8：
The following statements about the DR election process of the PIMSM shared network segment are correct:
A. When electing a DR, first compare the priority of Hello messages. The router with the highest priority of Hello messages will become the DR of the network segment.
B. If the priority of the Hello message is the same, the router with the larger IP address of the shared network segment interface will become the DR of the network segment
C. If the priority of Hello messages is the same, the router with the largest shared network segment Routerid will become the DR of this network segment
D. After electing the DR, elect the BDR again. When the DR fails, the BDR quickly takes over its work to ensure the normal forwarding of multicast traffic
正解：A,B

質問 9：
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. [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
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. [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
正解：D