최신 GB0-371-ENU 무료덤프 - H3C Constructing H3C High-Performance Campus Networks

문제1

As shown in the figure, initially SWA is connected to SWB through E0/1, and SWB is connected to SWC through port E0/2. SWA and SWC are not directly connected. After enabling STP and waiting for its convergence, connect SWA to SWC, which leads to the switch port The change of STP status, the correct description of this change is

A. SWB port E0/2 will go directly to Blocking state from Forwarding state

B. Both SWB port E0/2 and SWC port E0/2 will stay in the Listening state and the Learning state for one Forward Delay period.

C. Both SWA port E0/2 and SWC port E0/1 will stay in the Listening state and the Learning state for one Forward Delay period.

D. SWC port E0/2 will go directly to Forwarding state from Listening state

정답: A,C

문제2

Regarding the stpmcheck command in the spanning tree configuration, the correct statement is

A. This command is used when the switch port running RSTP or MSTP is connected to STP equipment

B. This command is used when RSTP switch and MSTP switch are interconnected

C. By running this command on the port of the RSTP or MSTP switch, the spanning tree mode of the port can be switched to STP

D. This command is used when switches of different manufacturers are interconnected and MSTP is running to check summary information

정답: A

문제3

The two routers are connected through a LAN to form a VRRP backup group, and the configuration on each interface is as follows:
[RTA-GigabitEthernet1/0]display this
ip address 192.168.0.252 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
[RTB-GigabitEthernet1/0]display this
ip address 192.168.0.253 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.0.254
It can be known from the above information

A. RTA and RTB cannot elect the master router of the backup group

B. RTA is the master router of the backup group

C. RTA and RTB are both in VRRP Master state

D. RTB is the master router of the backup group

정답: D

문제4

In the networking shown in the figure, the interconnection lines between RT1, RT2, RT3, and RT4 are all 1000M links except the shared Ethernet part which is a 10M link. The OSPF protocol is run to enable routing to communicate with these 4 routers. Both run PIMSM protocol, RP is 1.1.1.1, receivers are connected to the downstream interfaces of RT1 and RT2, and IGMP is enabled on the corresponding interfaces. Then, when the receiver sends a group join request, which of the following routers are connected (*, G) entry exists?

A. RT1

B. RT4

C. RT3

D. RT2

정답: A,C,D

문제5

As shown in the network, SWA and SWD enable RSTP, but SWB and SWC do not enable spanning tree protocol, the following statements are correct:

A. SWD will have a port role as Alternate

B. When the SWB port E0/2 is down, the SWD port E0/2 will wait 3 Hello Time before it becomes the new root port and enters the forwarding state

C. Because SWB and SWC do not enable spanning tree protocol, when the root port of SWD is down, the alternate port cannot immediately become the new root port and enter the forwarding state

D. When the SWB port E0/2 is down, the SWD port E0/2 will become the new root port and immediately enter the forwarding state

정답: A,B

문제6

The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1, and the switch SWB has the following configuration information:
[SWB]rrpp domain 1
[SWB-rrpp-domain1]ring 1 node-mode transit primary-port gigabitethernet 2/0/1 secondary-port gigabitethernet 2/0/2 level 0
If the switch SWA is the master node of primary ring 1, if the switch SWB port GigabitEthem2/0/1 fails, you can know from the above information

A. The switch SWA will send a Common-Flush message to notify all transmission nodes

B. If the switch SWB finds that the port GigabitEthernet 2/0/1 becomes Up again, it will immediately unblock the port

C. SWA will send Link-Down messages to notify all nodes

D. The switch SWA immediately switches the state to the Failed state and releases the secondary port

정답: A,D

문제7

NTP provides multiple working modes in order to adapt to different application scenarios. Which of the following descriptions of NTP working modes are correct is

A. Broadcast mode is suitable for dry point-to-multipoint network applications, improving deployment and operating efficiency

B. The client/server mode is suitable for the situation where the address of the clock server is known, and can appropriately improve the possibility of clock synchronization

C. In the peer mode, the active peer and passive peer can synchronize clocks with each other

D. Multicast mode is suitable for situations where the IP address of the server or peer is uncertain, simplifying deployment

정답: B,C,D

문제8

Regarding the port filtering mode of VoiceVLAN, the correct statement is

A. The port filtering mode of VoiceVLAN can be divided into security mode and normal mode.

B. By default, VoiceVLAN works in normal mode

C. In normal mode, the device will no longer check the MAC address of the message after the port enters the VoiceVLAN.

D. In the safe mode, the device will perform a MAC matching check on each packet that will enter the VoiceVLAN for transmission

정답: A,C,D

문제9

In the switching network as shown in the figure, set VLAN10 as Isolate-userW, VLAN2 and VLAN3 as the Secondary VLAN of VLAN 10 on the switch SWA; create VLAN2? VLAN20 on the switch SWB, and set VLAN20 as Isolate-user-vlan, VLAN4 As the Secondary VLAN of VLAN20, after setting the IP address of each device as shown in the figure, check the MAC address table on the SWA, and you can determine that the PCC belongs to

A. VLAN20

B. VLAN4

C. VLAN3

D. VLAN2

E. VLAN 10

F. VLAN 1

정답: E

문제10

In the networking shown in the figure, the router's unicast routing table is as follows:
<H3C>display ip routing-table
Routing Tables: Public
Destinations: 9Routes: 9
Destination/MaskProtoPreCost NextHop Interface
10.1.1.0/30 Direct 0010.1.1.2S0/2/0
10.1.1.1/32 Direct 0010.1.1.1 S0/2/0
10.1.1.2/32 Direct 00127.0.0.1 InLoopO
11.1.1.0/30 Direct 0011.1.1.1 Eth0/110
11.1.1.1/32 Direct 00127.0.0.1 InLoopO
12.1.1.0/30 Direct 0012.1.1.1Eth0/1/1
12.1.1.1/32 Direct 00127.0.0.1 InLoopO
13.1.1.0/30 Direct 0013.1.1.1EthO/1/2
13.1.1.1/32 Direct 00127.0.0.1 InLoopO
100.1.1.0/240SPF 10 1563 10.1.1.1S0/2/0
127.0.0.0/8 Direct 00127.0.0.1 InLoopO
127.0.0.1/32Direct 00127.0.0.1 InLoopO
200.1.1.0/240SPF 10 212.1.1.2Eth0/1/1
Then, the multicast data that the receiver (Receiver) will receive is

A. (100.1.1.1, 226.1.1.1)

B. (200.1.1.1, 226.2.2.2)

C. (100.1.1.1, 226.3.3.3)

정답: A,B

문제11

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.

정답: A,B,C,D

문제12

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 switch SWA to send the Flush message mac is 000f-e269-42d2

B. 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

C. None of the above answers are correct

D. 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

정답: C

문제13

Regarding the comparison of unicast, multicast and broadcast, there are correct

A. Compared with unicast, multicast can reduce the burden of the source

B. Compared with unicast, multicast can reduce link load

C. Compared with broadcast, multicast can reduce the burden of the source

D. Compared with broadcast, multicast can improve link utilization

정답: A,B,D

문제14

In the switching network as shown in the figure, VLAN 10 is set as Super VLAN on the switch SWA, VLAN 2 and VLAN 3 are Sub VLANs of VLAN 10, Port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass ; Create VLAN2~VLAN20 on the switch SWB, port Ethernet1/0/4 as Trunk port, PVID as VLAN1, allowing all VLANs to pass. After setting the IP address of each device as shown in the figure, you can judge (choose one or more item)

A. SWA can communicate with PCB

B. SWA can communicate with PCC

C. SWA can communicate with PCA

D. SWA can communicate with SWB

정답: A,B,C

문제15

The SSH protocol is widely used as a secure remote login protocol. The description of SSH is correct.

A. SSH uses TCP port 22 to transmit data and port 23 to establish a connection

B. SSH is SecureShell, which can use DES authentication to ensure data security

C. SSH can also provide a secure transmission channel for FTP

D. SSH uses additional encryption technology to ensure login security

정답: B,C,D

최신 GB0-371-ENU 무료덤프 - H3C Constructing H3C High-Performance Campus Networks

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