GB0-371-ENU by H3C Valid Free Exam Practice Test

Question 1

Which of the following elements may the MAC address table entry of the switch contain?

A. IP address B. Port number C. MAC address D. VLANID E. Aging time

Correct Answer: B,C,D,E

Question 2

Regarding root bridge protection, the following statements are correct:

A. When root bridge protection is not configured, the root bridge will lose its status as the root bridge if it receives a higher priority BPDU B. After the root bridge protection is configured, the ports receive high-priority BPDUs, and the status of these ports will be set to Listening and no longer forward packets C. The port will undergo a transition from the Listening state to the Forwarding state. During this period, if the port does not receive a better BPDU, the port will resume its original forwarding state. D. Root bridge protection is configured in port view

Correct Answer: A,B,C,D

Question 3

As shown in the network, the switches all run RSTP. Initially, SWA, SWB and SWC are interconnected through links 1, 2, and 3. When the following changes occur in the network connection, the correct statement is:

A. As shown in the figure, when SWB is connected to another switch SWD running RSTP, SWB will send RSTBPDU with TC set B. As shown in the figure, when SWB is connected to another switch running RSTP, SWD will send RSTBPDU with TC set. C. When SWC edge port E0/1 is connected to a PC, SWC will send RST BPDU with TC set D. When the link between SWB and SWC is down, both SWB and SWC will send RST BPDU with TC set

Correct Answer: A

Question 4

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. 255.255.255.255 B. 225.1.1.1 C. 224.0.0.1 D. 0.0.0.0 E. 224.0.0.2

Correct Answer: B,D

Question 5

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. VLAN20 B. VLAN 1 C. VLAN2 D. VLAN3 E. VLAN4 F. VLAN 10

Correct Answer: A

Question 6

As shown in the network topology, if STP is enabled on SWA and SWD, the statement about the state change of SWA and SWD port is correct.

A. The E0/1 port of SWD undergoes a port role change in the Listening state, from a designated port to a root port B. If the bridge priority of SWD is modified to 0, port E0/2 of SWA will directly enter the Blocking state, without the delay of Forward Delay C. Both E0/1 of SWA and E0/1 of SWD need to pass the ForwardDelay of Listening and Learning states to enter the Forwarding state. D. The E0/2 port of SWD changes its role in the Learning state, and changes from the designated port to Altenet

Correct Answer: A,B,C

Question 7

If customers prefer to use TACACS+ protocol instead of RADUS to complete user access authentication, this may be because

A. TACACS+ protocol encrypts all the body of the message with high security B. The TACACS+ protocol message is simple, which can be combined with authentication and authorization, or separated easily C. TACACS+ adopts UDP protocol, high network transmission efficiency D. TACACS+ protocol uses TCP reliable transmission

Correct Answer: A,D

Question 8

A customer wants to deploy 802.1X in the local area network to improve access security. At the same time, the customer wants to temporarily close the illegal packets received on the port for 5 minutes through the port security feature to prevent illegal users from accessing the network. The following can be used Which features are implemented

A. Trap features B. InstrusionProtection features C. ntk temporary feature D. NeedToKnow features

Correct Answer: B

Question 9

Regarding the POE system, the correct statement is

A. The voltage provided by the POE power supply is 48V, and the output power usually does not exceed 13W B. POE usually uses mid-span and end-span power supply methods C. 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 D. Usually PSE can support two methods of mid-span and end-span, PD can only support one

Correct Answer: A,B

Question 10

The Layer 3 switch receives the data frame and performs the Layer 2/Layer 3 forwarding judgment

A. If the destination MAC address of the data frame is the MAC address of the VLAN interface of the switch, the switch will perform Layer 3 forwarding B. If the destination IP address and source IP address of the data frame are not in the same network segment, the switch will look up the routing table for Layer 3 forwarding C. If the destination MAC address of the data frame is not the MAC address of the VLAN interface of the switch, the switch will look up the MAC address table and do Layer 2 forwarding in the VLAN D. If the destination IP address and source IP address of the data frame are in the same network segment, the switch will do Layer 2 forwarding

Correct Answer: A,C

Question 11

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

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

Correct Answer: A,B,C,D

Question 12

The following statements about RP election in PIMSM are correct:

A. One RP can serve multiple multicast groups B. After the BSR collects the announcement message information, it summarizes it into an RP-Set and sends it in multicast C. The announcement message information periodically sent by the C-RP router includes the C-RP address, priority, and the range of multicast groups it serves, etc. D. -A multicast group can select multiple RPs for load sharing

Correct Answer: A,B,C

Question 13

The following information is the snmp-related configuration on a H3C network device:
snmp-agent
snmp-agent local-engineid 800007DB00E0FC79887C6877
snmp-agent community read public
snmp-agent community write private
snmp-agent sys-info version all
Which description of the result of snmp access to this device is correct?

A. You can successfully access and set up this device through snmpv2c B. You can successfully access and set this device through snmpV3 C. You can successfully access and set up this device through snmpv1 D. No matter which version is adopted, this device cannot be accessed and set up

Correct Answer: A,C

Question 14

In the switching network as shown in the figure, set VLAN10 to Isolate-user-vlan VLAN2 and VLAN3 to the Secondary VLAN of VLAN 10 on the switch SWA; create VLAN2? VLAN20 on the switch SWB, and set VLAN20 to Isolate-user-vlan, The Secondary VLA with VLAN4 being VLAN20 can be judged after setting the IP address of each device as shown in the figure

A. PCA can communicate with SWA B. PCA can communicate with PCC C. SWA can communicate with SWB D. PCA can communicate with PCB E. PCA can communicate with SWB

Correct Answer: B,C,E

H3C Constructing H3C High-Performance Campus Networks - GB0-371-ENU Exam Practice Test