Get 2021 Updated Free H3C GB0-371-ENU Exam Questions & Answer
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NEW QUESTION 35
In the network as shown in the figure, the interconnection lines between RT1, RT2, RT3, RT4 and RT5 are all Gigabit Ethernet cables, running OSPF, and after publishing the corresponding network segments to achieve routing interoperability, the routers all run the PIM SM protocol. RP is 1.1.1.1 RT4 is connected to the receiver, and IGMP is enabled on the corresponding interface. After the initial multicast traffic forwarded along the RPT is switched to SPT, which of the following routers constitutes SPT
- A. RT4
- B. RT1
- C. RT2
- D. RT5
- E. RT3
Answer: A,B,C,E
NEW QUESTION 36
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. 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. 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
Answer: A,B,C,D
NEW QUESTION 37
Regarding the basic concepts of MSTP, the correct statement is
- A. Master port refers to the domain boundary port of the MST domain
- B. The role of the master port on all MSTIs is the same
- C. The master bridge is the regional root of IST
- D. If the MST domain is regarded as a logical bridge, the Master port is the root port of the logical bridge
Answer: B,C,D
NEW QUESTION 38
Regarding the BPDU format of MSTP, the correct statement is
- A. 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
- B. MSTI specifies that the port priority field is 2 bytes in length, including 1 byte of port priority and 1 byte of port number
- C. The MSTI calculation process will use the timer value in RSTBPDU instead of carrying the timer parameter in each MSTI configuration message
- D. If the switch is not configured with VLAN to instance mapping, MSTBPDU will not carry any MSTI configuration message
Answer: C,D
NEW QUESTION 39
As shown in the networking, the switch enables RSTP, and the following statements about its configuration are correct.
- A. The ports interconnecting SWB and SWC can be configured as edge ports to achieve rapid topology convergence
- B. If the edge port receives BPDUs, it will enter the blocking state
- C. The port configured as an edge port can directly enter the forwarding state without delay
- D. Port E0/3 of SWB and SWC can be configured as edge ports
Answer: C,D
NEW QUESTION 40
As shown in the picture, SWA, SWB and SWC enable STP, and the MAC address of SWB is less than the MAC address of SWA. If the topology converges and the bridge priority of SWB is set to 0, the following statements are correct.
- A. The topology will re-converge after 30 seconds by default
- B. After the priority is adjusted, SWB will immediately send configuration BPDUs with itself as the root from ports E0/1 and E0/2
- C. SWA will immediately determine that port E0/1 is the root port
- D. After SWC receives the configuration BPDU sent by SWB, it will not update immediately, but will wait for the locally saved configuration BPDU to age before updating
Answer: A,B,C
NEW QUESTION 41
The Layer 3 switch receives the data frame and performs the Layer 2/Layer 3 forwarding judgment
- A. 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
- B. 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
- C. 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
- D. 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
Answer: C,D
NEW QUESTION 42
In the networking model shown in the figure, after the configuration is completed, it is found that the user authentication fails, then the possible cause of the failure is
- A. The username is not configured on the RADIUSServer
- B. The message shared key between RADIUS Server and RADIUs Client is inconsistent
- C. No default domain is specified on RADIUSClient
- D. The network cable between RADIUS Server and RADIUs Client is not connected
Answer: A,B,C,D
NEW QUESTION 43
After executing the display interface Ethernet 1/0/1 command on the switch SWA, the output information is as follows
It can be judged from the above output that _____.
- A. Data frames tagged with VLAN1 will be discarded when they enter the port Ethernet 1/0/1
- B. Data frames with VLAN10 tags are discarded when they enter the port Ethernet 1/0/1
- C. Data frames with VLAN10 tags will be stripped of tags when they leave the port Ethernet 1/0/1
- D. Data frames with VLAN10 tags will be stripped of tags when they leave the port Ethernet 1/0/1
Answer: D
NEW QUESTION 44
Which of the following statements about SNMP v3 architecture is correct is _____.
- A. SNMP engine includes scheduler, message processing subsystem, security subsystem and access control subsystem
- B. An SNMP entity may be both SNMP Manager and SNMP Agent
- C. SNMP application includes command generator, command responder, instruction generator, proxy forwarder, etc.
- D. SNMP Manager either has a command generator or an instruction receiver
Answer: A,B,C
NEW QUESTION 45
Among the following options, the technologies that can be used for identity authentication include
- A. 802.1X authentication
- B. Packet filtering
- C. PortaL certification
- D. RADIUS
- E. EAD
Answer: A,C,D
NEW QUESTION 46
For the following configuration commands:
[H3C] ntp-service refclock-master 127.127.1.1 6
Understanding, which is correct
- A. The device successfully configured with this command has a clock accuracy of 6 in stratum
- B. This command can be successfully configured on all H3C series switches
- C. This command configures the local clock as the reference clock of the system
- D. The device successfully configured with this command can act as a clock server to provide external clock synchronization services
Answer: A,C,D
NEW QUESTION 47
The following statements about the PIM SM registration suppression timer are correct (choose one or more)
- A. After receiving the registration stop message, the DR will update the registration suppression timer and continue to send data in multicast mode
- B. To prevent the registration suppression timer from expiring, the DR will send the Register message encapsulating the multicast data to the RP before the timer expires
- C. The DR router of the multicast source will maintain a registration suppression timer. If the timer expires, the DR will unicast multicast source registration messages to the RP
- D. After the RP receives the registration message from the DR, it will send a registration stop message and update the local (S, G) and (*, G) entries
Answer: A,C
NEW QUESTION 48
The advantages of modular network architecture include (choose one or more)
- A. Allow different application functions or application systems to share data, resources and capabilities, and participate in business processes
- B. It is allowed to dynamically call IT resources through open interfaces to realize a standard, compatible, safe, intelligent and manageable IT application environment
- C. Each module can be planned and deployed separately. The function of the network can be added or removed by adding or deleting modules, which is conducive to building a complex network
- D. It replaces the traditional hierarchical network model to facilitate network planning and deployment
Answer: C
NEW QUESTION 49
Which of the following descriptions about the IP address of the VLAN interface of the H3C Layer 3 switch is correct?
- A. Only when two or more VLAN interfaces are configured with IP addresses can the switch have the function of Layer 3 routing and forwarding
- B. You must delete the secondary IP address before deleting the primary IP address of the VLAN interface
- C. As long as an IP address is configured for a VLAN interface, the switch has a three-layer routing and forwarding function
- D. When configuring the primary IP address for the VLAN interface, if there is already a primary IP address on the interface, you must delete the original primary IP address to configure a new primary IP address
Answer: A,B
NEW QUESTION 50
Regarding the STP port status, the following statements are correct
- A. When the port is in the Learning state, it starts to learn the MAC address, but does not forward data
- B. When the port is in Listening state and Learning state, if the port role is changed to Alternate port, the port state will directly change to Blocking
- C. When the port is in the Listening state, it will receive configuration BPDUs and perform calculations, but not send configuration BPDUs
- D. No matter what role the port finally determines, the time spent in the Listening state and the Learning state is a ForwardDelay duration
Answer: A,B
NEW QUESTION 51
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