2022 Realistic Verified GB0-371-ENU exam dumps Q&As - GB0-371-ENU Free Update
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NEW QUESTION 134
In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device as shown in the figure, the following statement is correct (choose one or more)
- A. The PCA packet comes out of the GigabitEthem1/0/3 port of SWA and enters the GigabitEthe1/0/3 port of SWB, and the VLAN Tag carried is VLAN2
- B. When SWB accesses PCA, the VLAN tag carried by GigabitEthem1/0/4 of SWB is VLAN 1
- C. SWB packets enter from SWA's GigabitEthem1/0/3 port, and after exiting from GigabitEthem1/0/1 port, the VLANTag carried is VLAN2
- D. The packet of PCA enters from the GigabitEther1/0/1 port of SWA, and does not carry the VLAN tag after exiting from the GigabitEther1/0/3 port
Answer: D
NEW QUESTION 135
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 and RTB are both in VRRP Master state
- C. RTB is the master router of the backup group
- D. RTA is the master router of the backup group
Answer: C
NEW QUESTION 136
In the networking shown in the figure, the PIM SM protocol runs between RT1, RT2 and RT3, the RP is 1.1.1.1, and there is a downstream receiver RT3 connected to a multicast source, check the RT3 unicast routing table as follows:
[RT3]display ip routing-table
Routing Tables: Public
Destinations: 10 Routes: 10
Destination/MaskProtoPreCost NextHop Interface
1.1.1.1/320SPF 10 1562 192.168.0.1 S0/2/0
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
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, after the RP sends the registration stop message, which of the following routers have (S, G) entries?
- A. RT3
- B. RT2
- C. RT1
Answer: A,C
NEW QUESTION 137
Regarding the multicast distribution tree model SPT, the correct statement below is ______.
- A. Each router on the SPT will maintain (S, G) entries
- B. Different multicast sources take themselves as the root and establish SPT independently
- C. Each router on the SPT will maintain (*, G) entries
- D. In the SPT model, the path taken by the multicast source to reach any receiver is optimal
Answer: A,B,D
NEW QUESTION 138
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. No matter which version is adopted, this device cannot be accessed and set up
- D. You can successfully access and set up this device through snmpv1
Answer: A,D
NEW QUESTION 139
The customer requires that during network design, there must be high-reliability equipment in key parts, and the reliability of the equipment should reach 99.999%.
- A. MTBF>Y343^; MTTR<U1
- B. MTBF>Y9 years; MTTR<U1
- C. MTBF>Y699^; MTTR<U1
- D. MTBF>Y28 years; MTTR<U1
Answer: A,C,D
NEW QUESTION 140
Regarding the configuration of BPDU and TCNBPDU, the statements are correct.
- A. Configure BPDUs to be sent only from the designated port, and TCNBPDUs to be sent only from the root port
- B. The configuration BPDU is usually received only from the root port, and the TCNBPDU is only received from the designated port
- C. Configuration BPDUs are usually only sent periodically by the root bridge, and TCNBPDUs may be sent by other bridges except the root bridge.
- D. AIternate port will neither send configuration BPDU nor TCNBPDU
Answer: A,B,C,D
NEW QUESTION 141
The advantages of modular network architecture include (choose one or more)
- A. It is allowed to dynamically call IT resources through open interfaces to realize a standard, compatible, safe, intelligent and manageable IT application environment
- B. 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
- C. It replaces the traditional hierarchical network model to facilitate network planning and deployment
- D. Allow different application functions or application systems to share data, resources and capabilities, and participate in business processes
Answer: B
NEW QUESTION 142
In the network connection as shown in the figure, SWA/SWB/SWC are in the same MSTP domain and configure the same domain configuration
stp region-configuration
region-name h3c
instance 1 vlan 10
instance 2 vlan 20
instance 2 vlan 30
active region-configuration
The ports of the three interconnected links are all Access and belong to the VLAN as shown in the figure. The three switches respectively create the VLAN virtual interface corresponding to the Access link and run OSPF on the virtual interface. The IP address of the VLAN virtual interface is assigned as follows:
SWA: vlan-interface 10 (192.168.10.1); vlan-interface 30 (192.168.30.1)
SWB: vlan-interface 10 (192.168.10.2); vlan-interface 20 (192.168.20.1)
SWC: vlan-interface 20 (192.168.20.2); vlan-interface 30 (192.168.30.2)
When the interconnection ports are all UP and the STP and OSPF calculations are completed, the following descriptions about network connectivity are correct:
- A. Two of the three switches cannot establish OSPF neighbor relationships
- B. All interconnection addresses of the three switches are mutually reachable
- C. Three switches can establish OSPF neighbor relationships in pairs
- D. Among the 6 interconnected addresses, at least two interconnected addresses are mutually unreachable
Answer: C
NEW QUESTION 143
The SSH protocol is widely used as a secure remote login protocol. The description of SSH is correct.
- A. SSH can also provide a secure transmission channel for FTP
- B. SSH is SecureShell, which can use DES authentication to ensure data security
- C. SSH uses TCP port 22 to transmit data and port 23 to establish a connection
- D. SSH uses additional encryption technology to ensure login security
Answer: A,B,D
NEW QUESTION 144
SOA-based network architecture divides the enterprise IT system into which of the following levels-(choose one or more)
- A. Application layer
- B. Business layer
- C. Service layer
- D. Network layer
Answer: A,C
NEW QUESTION 145
In the switching network as shown in the figure, all three switches have only default VLAN1. The interconnection ports of the three switches are Trunks, and all VLANs are allowed to pass. All three switches have the global and port GVRP functions enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet1/0/1 port is set to Forbidden on the switch SWA. Check the status of each Trunk port on the three switches. (Choose one or more)
- A. [SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- B. [SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- C. [SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
- D. [SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
Answer: B,D
NEW QUESTION 146
As shown in the networking, there is no connection between SWA and SWB at the beginning, and RSTP is enabled for SWA and SWB. When the topology is stable, connect the port E1/0/1 of SWA and SWB. Assuming that SWA will become the new root bridge, the following The correct statement is
- A. Port E1/0/1 of SWA and SWB will send Proposal message to request to enter forwarding state
- B. When SWB receives the Proposal message sent by SWA, it will immediately reply to the Agreement message
- C. SWB does not need to generate BPDUs by itself, and the content of the Agreement message in response is copied from the Proposal message sent by SWA
- D. When SWB receives the Proposal message sent by SWA, it will start the synchronization process to block the old root port, designated port and edge port
Answer: A,C
NEW QUESTION 147
Which of the following methods of dividing VLANs has the advantage that when the user's physical location moves, that is, when changing from one switch to another, VLAN does not need to be reconfigured-(choose one or more)
- A. VLAN based on MAC address
- B. Port-based VLAN
- C. VLAN based on IP subnet
- D. Protocol-based VLAN
Answer: A,C,D
NEW QUESTION 148
In the switching network as shown in the figure, all three switches have only default VLAN1, the interconnection ports of the three switches are Trunk, and all VLANs are allowed to pass, and the three switches have the global and port GVRP function enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the switch SWC, and the GVRP registration mode of the Ethernet1/0/1 port is set to Forbidden on the switch SWA, and the display vlan command is executed on the SWB to view the VLAN existing on VL^SWB Yes (choose one or more)
- A. VLAN 10
- B. VLAN1
- C. VLAN20
Answer: B,C
NEW QUESTION 149
As shown in the title picture, SWA, SWB, SWC and SWD enable STP. SWA, SWB and SWC form a loop. After the topology is stable, connect SWD and SWB. Assuming the same link overhead, the process of topology change of STP is The following statements are correct
- A. If the link between SWB and SWC is interrupted, both SWB and SWC will send TCN BPDUs from port E0/2
- B. SWD will send TCN BPDUs from port E0/1
- C. SWB will send TCN BPDU from port E0/2
- D. If the link between SWC and SWA is interrupted, SWC will send out TCN BPDU from port E0/3
Answer: C
NEW QUESTION 150
Regarding the comparison of RSTP and STP BPDU format, the following statements are correct:
- A. In the RST BPDU, the P/A flag in the Flags field is used for the root port fast switching mechanism
- B. RSTP does not separately define the BPDU type for the topology change process
- C. The TCA bit is not used in the topology change process defined by RSTP
- D. In the RST BPDU, the 8 bits of the Flags field have actual meanings
Answer: B,C,D
NEW QUESTION 151
The SSH protocol is widely used as a secure remote login protocol. What is correct about SSH is _______
- A. SSH can also provide a secure transmission channel for FTP
- B. SSH uses TCP port 22 to transmit data and port 23 to establish a connection
- C. SSH and Secure Shell can use DES authentication to ensure data security
- D. SSH uses additional encryption technology to ensure login security
Answer: A,C,D
NEW QUESTION 152
Which of the following protocols are not the multicast group management protocol running between the host and the router?
- A. MLD
- B. IGMPV2
- C. PIM-SM
- D. PIM-DM
- E. MSDP
Answer: C,D,E
NEW QUESTION 153
Regarding the generation of TCNBPDU, the following statements are correct
- A. If the designated port link of a switch in the network is broken, the switch must generate TCNBPDU
- B. When a port of the switch is selected as the designated port or root port, the switch will immediately send TCNBPDU
- C. STP-enabled non-root bridge switch If a port is connected to a PC, when the port enters the Forwarding switch, it will not produce TCN BPDU
- D. If the alternate port of a switch in the network is down, the switch will not generate TCN BPDUs
Answer: D
NEW QUESTION 154
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. The switch SWA immediately switches the state to the Failed state and releases the secondary port
- C. If the switch SWB finds that the port GigabitEthernet 2/0/1 becomes Up again, it will immediately unblock the port
- D. SWA will send Link-Down messages to notify all nodes
Answer: A,B
NEW QUESTION 155
Two routers are connected together via a LAN to form a VRRP backup group. If the router RTA receives the VRRP protocol message sent by the router RTB, the Priority field Auth Type field value of the message is 2, then
- A. Router RTB has enabled VRRP simple character authentication
- B. Router RTB is the owner of the VRRPIP address
- C. Router RTB enables VRRPV3 protocol
- D. Router RTB enables VRRPV2 protocol
Answer: B,D
NEW QUESTION 156
What is correct about the interoperability between Sub VLANs in SuperVLAN technology?
- A. The hosts in different SubVLANs are isolated at the second layer, and the third layer can communicate with each other through the ordinary proxy ARP technology of the Super VLAN interface
- B. Layer 2 isolation between hosts in different SubVLANs, Layer 3 can communicate with each other through the local proxy ARP technology of the Super VLAN interface
- C. Host IP addresses in different SubVLANs belong to the same network segment, and they can communicate directly with each other through Layer 2 forwarding
- D. Host IP addresses in different SubVLANs belong to the same network segment, but due to the isolation effect of Sub VLANs, it is impossible to achieve intercommunication between Sub VLANs.
Answer: B
NEW QUESTION 157
The following statements about the registration process of PIM SM are correct (choose one or more)
- A. When a multicast source initially sends traffic, the connected DR will encapsulate several empty Register messages to register with the RP
- B. After the RP receives the source registration message for the first time, it will send a (*, G) join message to the multicast source and establish (*, G) entries along the way
- C. Unlike the PUSH method of PIM DM, in PIM SM, the multicast source only starts to send multicast traffic when there are downstream receivers
- D. After the RP normally receives the multicast forwarded traffic from the multicast source, it forwards the multicast to its downstream interface until the multicast receiver, forming an RPT from the RP to the multicast receiver along the way.
Answer: D
NEW QUESTION 158
The stp mcheck command in the spanning tree configuration is correct.
- A. This command is used when the switch port running RSTP or MSTP is connected to STP equipment
- B. By running this command on the RSTP or MSTP switch port, the spanning tree description of the port can be switched to STP
- C. This command is used when RSTP switch and MSTP switch are interconnected
- D. This command is used when switches of different manufacturers are interconnected and MSTP is running to check summary information
Answer: A
NEW QUESTION 159
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