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Latest H3CSE-Routing & Switching GB0-371-ENU Actual Free Exam Questions
NEW QUESTION 64
In the network shown in the figure, the switch SWA is a two-layer switch, and the router RTA is the gateway of each PC. The following configuration is made on the router RTA:
[RTA]interface Ethernet 0/0.1
[RTA-Ethernet0/0.1]ip address 10.10.10.1 255.255.255.0
[RTA-EthernetO/0.1 ]vlan-type dotlq vid 1
[RTA-Ethernet0/0.1 Jinterface ethernet 0/0.2
[RTA-Ethernet0/0.2]ip address 20.20.20.1 255.255.255.0
[RTA-Ethernet0/0.2]vlan-type dotlq vid 2
[RTA-Ethernet0/0.2]interface ethernet 0/0.3
[RTA-Ethernet0/0.3]ip address 30.30.30.1 255.255.255.0
[RTA-Ethernet0/0.3]vlan-type dotlq vid 3
After completing the phase configuration on the switch SWA, PCA, PCB and PCC can all ping their own gateway. The following is correct about the switch SWA port Ethernet1/0/4 (choose one or more)
- A. interface Ethernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 3
- B. interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 2
- C. interface Ethernet 1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 10
- D. interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all
Answer: C
NEW QUESTION 65
Regarding BPDU protection, the following statements are correct
- A. Edge ports that are not configured with BPDU protection will be converted to non-edge ports upon receiving BPDUs
- B. BPDU protection is configured in the system view
- C. After configuring BPDU protection, the edge port will be closed when receiving BPDUs
- D. BPDU protection is configured in the protected port view
Answer: A,B,C
NEW QUESTION 66
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. Among the 6 interconnected addresses, at least two interconnected addresses are mutually unreachable
- B. Two of the three switches cannot establish OSPF neighbor relationships
- C. All interconnection addresses of the three switches are mutually reachable
- D. Three switches can establish OSPF neighbor relationships in pairs
Answer: D
NEW QUESTION 67
In the PIM-DM network as shown in the figure, part of the unicast routing table of routers RT1 and RT2 is as follows:
<RT1>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
1.1.1.0/24xxxxP1-1 C1-110.1.1.1POI11
1.1.0.0/16xxxxP1-2 C1-210.1.1.1Port1
<RT2>display ip routing-table
Routing Tables: Public
Destination/MaskProtoPreCost NextHop Interface
1.1.1.0/24XXXX P2-1 C2-111.1.1.1Port2
1.1.1.1/32XXXX P2-2 C2-211.1.1.1Port2
Then, when routers RT1 and RT2 perform Assert, the winner should be
- A. If P1-1=P2-1, C1-1=C2-1, then RT1 wins
- B. If P1-1=P2-1, C1-1>C2-1, then RT1 wins
- C. If P1-1<P2-1, C1-1<C2-1, RT1 wins
- D. If P1-1=P2-2, C1-1>C2-2, then RT2 wins
- E. If P1-1=P2-2, C1-1=C2-2, then RT2 wins
- F. If P1-1<P2-2, C1-1<C2-2, RT2 wins
Answer: D,E
NEW QUESTION 68
Regarding the basic concepts of MSTP, the correct statement is
- A. By default, all VLANs in the MST domain are mapped to IST
- B. When CST is running, the MST region is regarded as a logical switch, and the root bridge of CST is the domain to which the common root belongs
- C. CST refers to a spanning tree between regions, which is obtained by running STP/RSTP between MST regions
- D. IST is a spanning tree in the MST region, and the instance number corresponding to IST is 0
Answer: A,B,C,D
NEW QUESTION 69
Regarding TC protection, the following statements are correct
- A. TC protection is configured in the system view
- B. After the TC protection function is enabled, within 10 seconds after receiving the TC-BPDU message, the device allows the number of address table item deletion operations immediately after receiving the TC-BPDU message can be controlled by the user
- C. The system monitors whether the number of TC-BPDU packets received during this time period is greater than the threshold. If it is greater than the threshold, the device will delete the address table entry again after the time expires, so as to avoid frequent deletion and forwarding Address table entry
- D. After the switch receives the TC-BPDU message, it will delete the MAC address table entry
Answer: A,B,C,D
NEW QUESTION 70
As the above topology, the loop formed by SWA, SWB and SWC enables STP, then the following statement is correct:
- A. Before joining SWD, after STP converges, SWC will receive configuration BPDUs from both E0/1 and E0/2
- B. After the STP converges, connect the SWD to the network through the dotted link 1 in the figure, and the SWD will first send the configuration BPDU with itself as the root, and the SWB will immediately respond to the configuration BPDU with the SWA as the root.
- C. Before joining SWD, after STP convergence, SWB port E0/2 is an alternate port
- D. After the STP converges, connect the SWD to the network through the dotted link 1 in the figure, then the SWD will first send the configuration BPDU with itself as the root, and after the longest Hello Time, the SWC will send the SWD the configuration with the SWA as the root BPDU
Answer: A,B
NEW QUESTION 71
The configuration command to enable the QinQ function of the Ethernet port on the H3C series switch is
- A. qinq enable
Answer: A
NEW QUESTION 72
Regarding the comparison of the calculation convergence of RSTP and STP, the correct statement is
- A. Compared with STP, RSTP defines the edge port, which can make the port connected to the i machine quickly enter the forwarding state
- B. Compared with STP, RSTP defines a fast root port switching mechanism^ This can make Alternate quickly become a new root port
- C. If STP wants to shorten the convergence time, you can only configure a smaller ForwardDelay time, but it may affect the stability of the network
- D. Compared with STP, RSTP defines the designated port fast switching mechanism, which can make the designated port quickly enter the forwarding state without waiting for twice the Forward Delay time
Answer: A,B,C,D
NEW QUESTION 73
In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the 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, which of the following statements is correct (choose one or more)
- A. When SWB accesses PCA, after the packet comes out of the GigabitEthem1/0/4 port of SWB, the VLAN Tag carried is VLAN20
- B. SWB packets from GigabitEthernet1/0/3 of SWA come out of GigabitEthem1/0/1 without VLAN
- C. The PCA packet enters from the GigabitEthe1/0/1 port of SWA, and the VLAN Tag carried after it exits the GigabitEthem1/0/3 port is VLAN 10
- D. The PCA packet comes out of the GigabitEthem1/0/3 port of SWA and enters the GigabitEthem1/0/4 port of SWB without VLAN tag
Answer: B
NEW QUESTION 74
In the network connection as shown in the figure, SWA and SWB enable STP and Loopback-detection at the same time. Please confirm that the port status description of SWA and SWB is correct.
- A. G1/0/1 of SWA may be blocked by STP detecting the existence of a loop
- B. STP detects the existence of a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them
- C. Between G1/0/2 and G1/0/3 of SWB, loopback-detection detects the existence of a loop and blocks one of them
Answer: B
NEW QUESTION 75
Regarding the compatible operation of RSTP and STP, the following statements are correct:
- A. When the RSTP switch and STP switch work together, you need to switch the working mode of the RSTP switch to STP through the command stpmode stp
- B. When the connection between the RSTP switch and the STP switch is disconnected, the port previously connected to the STP switch will automatically switch back to RSTP mode
- C. When the RSTP switch and STP switch work together, the port connected to the STP switch will switch to STP mode
- D. When a port on the RSTP switch is switched to STP mode, the port will no longer have the rapid convergence characteristics of RSTP
Answer: C,D
NEW QUESTION 76
The IP address of the host PCA is 40.1.1.1, the MAC address is 0011.1111.1111, and it is connected to the GigabitEthernet1/0/1 port of the switch SWA. The following commands are configured on the switch SWA:
[SWA]vlan 10
[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 50.1.1.0 255.255.255.0
[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 complete, it can be judged that PCA will join
- A. VLAN30
- B. VLAN20
- C. VLAN40
- D. VLAN 10
Answer: A
NEW QUESTION 77
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 a Trunk port, PVID is VLAN 1, 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. PCC can communicate with SWB
- B. PCC can communicate with SWA
- C. PCC can communicate with PCB
- D. SWA can communicate with SWB
Answer: B
NEW QUESTION 78
Which of the following statements about ring network technology is correct?
- A. RRPP (Rapid Ring Protection Protocol) is a network layer protocol specifically applied to Ethernet rings
- B. RRPR requires a dedicated hard cow, so the cost is higher
- C. The convergence time of RRPP has nothing to do with the number of nodes on the ring network, and can be applied to networks with larger network diameters
- D. Ethernet ring technology is becoming more mature and low in cost. The technologies to solve the problem of layer 2 network loops include RPR and RRPP
Answer: C
NEW QUESTION 79
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. RT2
- B. RT3
- C. RT5
- D. RT1
- E. RT4
Answer: A,B,D,E
NEW QUESTION 80
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 with VLAN10 tags will be stripped of tags when they leave 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 tagged with VLAN1 will be discarded when they enter the port Ethernet 1/0/1
Answer: A
NEW QUESTION 81
Regarding the generation of TCN BPDUs, which of the following statements are correct
- A. When a port of the switch is selected as the designated port or root port, the switch will immediately send TCNBPDU
- B. If the Alternate port link of a switch in the network is broken, the switch will not generate TCN BPDUs
- C. If the designated port link of a switch in the network is broken, the switch must generate TCN BPDUs
- D. STP-enabled non-root bridge switch If a port is connected to a PC, when the port enters the Forwarding switch, no TCN BPDU will be generated
Answer: B
NEW QUESTION 82
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