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Free H3C GB0-372-ENU Exam Questions and Answer
NEW QUESTION # 199
The customer LAN switches SWA, SWB, and SWC form the RRPP ring main ring 1. The switch SWA has the following configuration information:
[SWA] rrpp domain 1
[SWA-rrpp-domain1] control-vlan 4092
If switches SWB, SWC, and SWD form sub-ring 2, switches SWB, SWC, and SWE form sub-ring 3, which of the following can be known from the above information?
- A. Switches SWB, SWC, and SWD can use VLAN 4092 as the sub-ring 2 control VLAN
- B. Switches SWB, SWC, and SWE cannot use VLAN 4092 as the sub-ring 3 control VLAN
- C. To facilitate the management of the main ring, you can configure an IP management address on the sub-ring 3 control VLAN
- D. The control VLAN of sub-ring 2 must be different from the control VLAN of sub-ring 3.
Answer: B
NEW QUESTION # 200
The IP address of host PCA is 40.1.1.1, and the MAC address is 0011.1111.1111. PCA is connected to [SWA] vlan 10 of switch SWA.
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] protocol-vlan ipv4
[SWA-vlan20] quit
[SWA] vlan 30
[SWA-vlan30] quit
[SWA] mac-vlan mac-address 0011-1111-1111 vlan 30
[SWA] vlan 40
[SWA-vlan40] ip-subnet-vlan ip 40.1.1.0 255.255.255.0
[SWA-vlan40] quit
[SWA] interface GigabitEthernet 1/0/1
[SWA-GigabitEthernet1/0/1] port link-type hybrid
[SWA-GigabitEthernet1/0/1] port hybrid pvid vlan 10
[SWA-GigabitEthernet1/0/1] port hybrid vlan 10 20 30 40 untagged
[SWA-GigabitEthernet1/0/1] port hybrid protocol-vlan vlan 20 0
[SWA-GigabitEthernet1/0/1] port hybrid ip-subnet-vlan vlan 40
[SWA-GigabitEthernet1/0/1] mac-vlan enable
[SWA-GigabitEthernet1/0/1] vlan precedence ip-subnet-vlan
After the configuration is completed, which of the following can be determined that PCA will join?
- A. VLAN20
- B. VLAN40
E The configuration command is incorrect. - C. VLAN 10
- D. VLAN30
Answer: B
NEW QUESTION # 201
As the basis for SNMP protocol implementation, MIB must be stored and accessed with correct rules.
Which of the following descriptions about storage and access to MIB is incorrect? (Multiple choice)
- A. MIB is a collection of managed objects and is stored on the network management workstation
- B. MIB is a collection of managed objects and is stored on managed devices
- C. The network management workstation can only access objects stored in the MIB on the managed device.
- D. The network management workstation can only access objects stored in the MIB on the network management workstation.
- E. MIB is stored in SM tree structure
Answer: A,D,E
NEW QUESTION # 202
As shown in the figure, the switch enables RSTP; assuming that the cost values of each link are the same, which of the following is correct? (Multiple choice)
- A. If the spanning tree operation mode of SWB and SWC is changed to STP, the Alternate port of SWD can still directly enter the forwarding state after becoming the new root port.
- B. If there are multiple alternate ports on SWD, when the root port is DOWN, SWD will select the port with the highest priority from these alternate ports as the new root port
- C. If the SWD port EO/1 goes down, the SWD port EO/2 will immediately change from an alternate port to a new root port.
- D. After the topology converges, SWD will have one port as an alternate port
Answer: B,D
NEW QUESTION # 203
Regarding the compatibility configuration of MSTP, which of the following is correct? (Multiple choice)
- A. Since different vendors have different keys, different summary results may be obtained even if the VLAN instance mappings are the same.
- B. When switches from different manufacturers communicate with each other through MSTP, as long as the domain name, revision level, and VLAN instance mapping are configured exactly the same, the switches can be guaranteed to belong to the same MST region.
- C. When digest snooping is configured, the H3C switch will use the same hash algorithm and key as the peer vendor when performing digest calculations.
- D. H3C switches can achieve MSTP interoperability with switches from other manufacturers by configuring summary snooping.
Answer: A,D
NEW QUESTION # 204
The following information is the SNMP configuration on a certain H3C network device:
Snmp-agent
Snmp-agent local-engineid 800007DB0OEOFC79887C6877
snmp-agent sys-info version all
Snmp-agent group v3 h3c
Snmp-agent usm-user v3 h3c h3c
Which of the following description of the result of SNMP access to this device is correct?
- A. This device can be successfully accessed and configured via snmp v3
- B. Regardless of the version, this device cannot be accessed or configured
- C. This device can be successfully accessed and configured via snmp v1
- D. You can successfully access and configure this device through snmp v2c
Answer: A
NEW QUESTION # 205
As shown in the figure, SWA, SWB and SWC enable STP. If the bridge priority of SWA is set to
61440 after the topology converges, which of the following statements are correct? (Multiple choice)
- A. After the priority is adjusted, SWA will still send configuration BPDUs with itself as the root.
- B. After receiving the low-priority configuration BPDU, SWC will immediately respond with the configuration BPDU with itself as the root.
- C. After the configuration BPDU saved locally by SWB ages, it will send a configuration BPDU with itself as the root to SWA.
- D. By default, the topology will converge again after 30 seconds.
Answer: A
NEW QUESTION # 206
The advantages of the hierarchical network model include_____.(Multiple choice)
- A. Reduce end-to-end latency
- B. Enhance network scalability
- C. Facilitate network maintenance
- D. Improve network throughput
Answer: B,C
NEW QUESTION # 207
Which of the following addresses is not an IPv4 multicast address?
- A. 242.255.255.250
- B. 224.0.0.13
- C. 239.255.255.255
- D. 232.255.255.255
Answer: A
NEW QUESTION # 208
Which of the following statements about EVPN are correct? (Multiple choice)
- A. EVPN can automatically generate routing entries based on virtual machine ARP
- B. EVPN VXLAN tunnels are automatically established through type 3 routing
- C. EVPN is implemented by extending lSIS
- D. EVPN uses 5 types of routing to advertise MAC/IP and other information
Answer: A,B
NEW QUESTION # 209
The figure shows the networking application of SmartLink and Monitor Link. The Smart Link group is configured on switch SWD, and the MonitorLink group is configured on switch SWB and switch SWC.
The port of switch SWB connected to switch SWA is the Monitor Link uplink port, and the port of switch SWB connected to switch SWD is the Monitor Link downlink port: the opposite port of the downlink port is the port of switch SWD Smart Link group. What can we learn from the above information? (Multiple choice)
- A. The link of switch SWB to switch SWA is in Down state, and the Smart Link group state of the corresponding port of switch SWD must change.
- B. The link of switch SWD to switch SWB is in Down state, and the status of the upstream port of switch SWBMonitor Link group must have changed.
- C. The link of switch SWD to switch SWB is in Down state, and the status of the upstream port of switch SWBMonitor Link group may not change.
- D. The link of switch SWB to switch SWA is in Down state, and the Smart Link group state of the corresponding port of switch SWD may not change.
Answer: C,D
NEW QUESTION # 210
The figure shows the stable topology after STP calculation convergence. Which of the following statements is correct? (Multiple choice)
- A. The aging time for the port to save the BPDU is MaxAge
- B. This BPDU is a configuration BPDU, and the destination address is 01-80-C2-00-00-0
- C. SWA is the root bridge in the network
- D. The sending period of this BPDU is HelloTime
Answer: A,B,C,D
NEW QUESTION # 211
The GARP messages used in information exchange between GARP application entities are?
(Multiple choice)
- A. Empty
- B. JoinEmpty
- C. LeaveEmpty
- D. LeaveAll
- E. Join
- F. Leave
- G. JoinAll
Answer: A,B,D,E,F
NEW QUESTION # 212
Which of the following measures can be taken in the campus network to ensure the security of the network or equipment? (Multiple choice)
- A. Deploy IPSec VPN to build a private network
- B. Campus network accesses the Internet through NAT translation
- C. Configure BPDU protection on switches in the network
- D. For illegal access to network resources, ACL can be deployed to perform access control
Answer: A,B,C,D
NEW QUESTION # 213
In the switching network shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/03 is T port, PVID is VLAN1, and all VLANs are allowed to pass; after completing all configurations on switch SWA, which of the following can be determined that the physical ports included in VLAN10 on switch SWA?
- A. Ethemet1/0/2
- B. Does not contain any ports
- C. Ethernet1/0/1
- D. Ethernet1/0/3
Answer: B
NEW QUESTION # 214
Which of the following statements about the BPDU format of MSTP is correct? (Multiple choice)
- A. The MSTI domain root ID is the ID of the bridge with the highest priority in the MSTI.
- B. The definition of the Flags field in the MSTI configuration message is exactly the same as the definition of the Flags field in the RST BPDU
- C. The length of the MST region root ID field is 48 bytes. The high-order two bytes are the bridge priority level. The value range is 0-61440 with a step length of 4096.
- D. The port path cost value of the same link can be different in different MSTIs
Answer: B,D
NEW QUESTION # 215
Which of the following statements about the PIM SM registration suppression timer is correct?
(Multiple choice)
- A. The DR router of the multicast source maintains a registration suppression timer. If the timer expires, the DR will unicast the multicast source registration message to the RP.
- B. After receiving the registration message from the DR, the RP sends a registration stop message and updates the local (S, G) and (*, G) entries.
- C. To prevent the registration suppression timer from timing out, the DR will send a Register message encapsulated with multicast data to the RP before the timer times out.
- D. After receiving the registration stop message, DR will update the registration suppression timer and continue to send data in multicast mode.
Answer: A,D
NEW QUESTION # 216
When designing the network, the customer requires that key parts must have high-reliability equipment, and the reliability must reach 99.999%. which of the following operation of the equipment should meet? (Multiple choice)
- A. MTBF>Y343N; MTTR<U1
- B. MTBF>Y28 years; MTTR<U1
- C. MTBF>Y9 years; MTTR<U1
- D. MTBF>Y699^; MTTR<U1
Answer: A,B,D
NEW QUESTION # 217
Which of the following statements about the VXLAN data plane are correct? (Multiple choice)
- A. For the Underlay devices on the forwarding path, there is no need to adjust the MTU
- B. When VXLAN packets are forwarded between Underlay devices, the source and destination MAC addresses in the outer IP header do not change.
- C. When VXLAN packets are forwarded between underlay devices, the source and destination MAC addresses in the outer IP header will change.
- D. For the underlay device on the forwarding path, it is best to increase the MTU by 50
Answer: C,D
NEW QUESTION # 218
In the switching network shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/0/3 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass; VLAN2 and VLAN20 are created on switch SWB, port Ethernet1/0/4 is a Trunk port, PVID is VLAN1, and all VLANs are allowed to pass. After setting the IP addresses of each device as shown in the figure, you can judge which of the following?
- A. SWB can communicate with PCC
- B. SWB can communicate with PCA
- C. SWB can communicate with SWA
- D. SWB can communicate with PCB
- E. None of the above answers are correct
Answer: E
NEW QUESTION # 219
If port-based VLAN, MAC address-based VLAN, protocol-based VLAN and IP subnet-based VLAN are enabled on a port of the switch, by default, the VLANs will be matched in order?
- A. MACVLAN Subnet VLAN Protocol VLAN Port VLAN
- B. MACVLAN Port VLAN Protocol VLAN Subnet VLAN
- C. Port VLAN IP Subnet VLAN Port VLAN MAC VLAN
- D. Port VLAN MACVLAN Protocol VLAN IP Subnet VLAN
Answer: A
NEW QUESTION # 220
In SDN networks, which of the following problems exist in the traditional network security deployment method? (Multiple choice)
- A. Security equipment capabilities cannot be shared among multiple services
- B. In Overlay networking, network devices need to detect inner messages through Overlay encapsulation
- C. Data packets need to be classified multiple times, which is inefficient.
- D. The coupling between network devices is large and the topology is seriously dependent.
Answer: B,C,D
NEW QUESTION # 221
Regarding the compatibility configuration of MSTP, which of the following statements are correct?
(Multiple choice)
- A. The ports of H3C switches can be configured to automatically identify the format of MSTP messages and determine the format of the messages to be sent based on the identification results.
- B. If the MSTP message format received by the port is inconsistent with the configured message format, the port will become a designated port and the port status will remain in the Discarding state to prevent loops.
- C. If the port identification/sending MSTP message mode is configured as dotls, the port only sends and receives MSTP messages in standard format.
- D. The stpcompliance command can be used to configure the MSTP compatibility mode of the port. The auto parameter means that the port only sends and receives MSTP messages that are compatible with non-standard formats.
Answer: A,B,C
NEW QUESTION # 222
Which of the following statements about PIMSM shared network segment DR is correct? (Multiple choice)
- A. The DR on the multicast source side is responsible for sending registration messages to the RP
- B. DR election is only required when there are multiple routers connected to the shared network segment on the receiver side and the routers are running IGMPV1.
- C. The DR on the multicast source side must run IGMP, otherwise the receivers on the receiver side cannot receive the multicast traffic.
- D. The DR on the receiver side is responsible for sending a join message to the RP
Answer: A,D
NEW QUESTION # 223
In the network shown in the figure, the interconnection lines between RT1, RT2, RT3 and RT4 are all 1000M links except for the shared Ethernet part which is a 10M link. OSPF protocol is run to make the routes interoperable. The four routers all run PIMSM protocol, and the RP is 1.1.1.1. RT1 and RT2 are connected to receivers on their downstream interfaces, and IGMP is enabled on the corresponding interfaces. Then, when the receiver sends a group join request, which of the following routers have (*, G) entries? (Multiple choice)
- A. RT2
- B. RT1
- C. RT4
- D. RT3
Answer: A,B,D
NEW QUESTION # 224
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