H3C GB0-371-ENU 問題集

質問 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. GigabitEthernet1/0/2 port UP
B. GigabitEthernet1/0/1, GigabitEthernet1/0/2 and GigabitEthem1/0/3 are all up
C. GigabitEthernet1/0/1 port is up
D. GigabitEthernet1/0/3 port is up
正解：A,B,C,D

質問 2：
Regarding the comparison of the calculation convergence of RSTP and STP, the correct statement is
A. Compared with STP, RSTP defines the edge port, which can make the port connected to the i machine quickly enter the forwarding state
B. If STP wants to shorten the convergence time, you can only configure a smaller ForwardDelay time, but it may affect the stability of the network
C. Compared with STP, RSTP defines the designated port fast switching mechanism, which can make the designated port quickly enter the forwarding state without waiting for twice the Forward Delay time
D. Compared with STP, RSTP defines a fast root port switching mechanism^ This can make Alternate quickly become a new root port
正解：A,B,C,D

質問 3：
Regarding loop protection, the following statements are correct
A. Link congestion or single link may cause loops
B. If the role of the root port changes, it will become the Discarding state, without forwarding packets, so that no loop will be formed in the network. The Discarding state will be maintained until the port receives the BPDU again and becomes the root port again.
C. After the loop protection function is activated, when the BPDU saved on the port ages, the loop protection takes effect
D. In MSTP, this function is valid for root port, alternate port and backup port
正解：A,B,C,D

質問 4：
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. VLAN40
B. VLAN20
C. VLAN30
D. VLAN 10
正解：A

質問 5：
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 that the corresponding ARPPCA sent an ICMP request message when accessing the PCB, and the destination MAC address of the message is _
A. MAC-20
B. FFFF.FFFF.FFFF
C. MAC-B
D. MAC-10
正解：D

質問 6：
In the networking shown in the figure, the PIM SM 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 View the unicast routing table on RT2 on RT3 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 192.168.2.1 so/2/1
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：A,B,C

質問 7：
The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1, and the switch SWA has the following configuration information:
[SWA] rrpp domain 1
[SWA-rrpp-domain1] control-vlan 4092
k The above information can be known
A. In order to facilitate network management, an IP management address can be configured on VLAN4092
B. All ports on the switches SWA, SWB, and SWC need to be added to VLAN4092
C. The main ring control VLAN on the switch SWB and SWC can be inconsistent with SWA
D. All ports connected to the RRPP ring on the SWA, SWB, and SWCRRPP rings of the switch need to be added to VLAN 4092
正解：D

質問 8：
As the network management director of a certain company, Mr. Wang adheres to the following network technology and network equipment selection and application principles in network construction. As a network engineer, you think the selection and application of those technologies are not good for network management.
A. Each manufacturer's network equipment must use its own network management system for management
B. The network equipment is provided by at least three different manufacturers
C. The routing protocol must choose a standard dynamic routing protocol
D. All devices are required to support standard topology discovery protocol
正解：A,B

質問 9：
Regarding the POE system, ______ is correct.
A. Usually PSE can support two methods of mid-span and end-span, PD can only support one
B. The voltage provided by the POE power supply is 48V, and the output power does not exceed 13W
C. POE usually uses min-span and end-span power supply methods
D. The POE system includes two parts: PSE equipment and PD equipment, where PD is the power supply device, and PSE is the power receiving device
正解：B,C