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H3C GB0-372-ENU Exam Syllabus Topics:

H3CSE-RS-SW Sample Questions:

Question 1

In the switching network shown in the figure, VLAN 10 is set as the Super VLAN on the switch SWA, and VLAN2 and VLAN3 are sub VLANs of VLAN 10. VLAN, 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 is correct?

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

Question 2

Which of the following statements about the generation of TCNBPDU is correct?

A. When a switch port is selected as a designated port or root port, the switch will immediately send TCNBPDU
B. If the link of a designated port of a switch in the network is broken, the switch will definitely generate a TCNBPDU
C. If a port of a non-root bridge switch with STP enabled is connected to a PC, the switch will not generate TCN BPDU when the port enters the forwarding state.
D. If the alternate port of a switch in the network is down, the switch will not generate TCN BPDU

Question 3

Which of the following descriptions of Openflow are incorrect? (Multiple choice)

A. The main components of openFlow include OpenFlow controller and OpenFlow switch
B. The priority of the Table Miss entry is 65535
C. OpenFlow instance types can be divided into global instances, VLAN instances, and interface instances.
D. OpenFlow uses TCP port number 6622

Question 4

Which of the following statements are correct regarding the role and status of STP ports? (Multiple choice)

A. Ports with the Alternate role will not experience the Listing state and the Learning state.
B. The designated port will enter the Forwarding state after two ForwardDelay durations.
C. Only the Alternate port will be in the Blocking state
D. Only the specified port will eventually be in the Forwarding state

Question 5

In the switching network shown in the figure, VLAN 10 is set as lsolate-user-vlan on switch SWA, and VLAN 2 and VLAN 3 are set as Secondary VLAN of VLAN 10; VLAN 20 is created on switch SWB, and VLAN 20 is set as lsolate-user-vlan, and VLAN 4 is set as Secondary VLA of VLAN 20. After setting the IP addresses of each device as shown in the figure, the local proxy ARP function is enabled on SWA and SWB. Initially, the switch and PC did not learn their corresponding ARP entries. When PCA pings PCB, PCA will send an ARP request. What is the source MAC address of the ARP request message forwarded by the switch to PCB?

A. 00E0.FC00.0020
B. 00E0.FC00.0010
C. 0011.1111.1111
D. 0000.0000.0000

Solutions: