In the switching network shown in the figure, all switches have enabled the STP protocol.

According to the information in the figure, which switch will be selected as the root bridge?

• A.SWB
• B.Insufficient information, unable to judge
• C.SWD
• D.SWA
• E.SWC

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PCA and PCB are respectively connected to ports Ethernet1/0/2 and Ethernet1/0/3 of S3610 switch SWA, and the server is connected to port Ethernet1/0/1.
If you use port isolation technology to isolate the PCs from each other, but the PCs can access the server, which commands need to be configured on the switch? (multiple choice)

• A.[SWA-Ethernet1/0/2] port-isolate group 1
• B.[SWA] port-isolate group 1
• C.[SWA-Ethernet1/0/3] port-isolate group 1
• D.[SWA-Ethernet1/0/1] port-isolate uplink-port

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The correct statement about the STP protocol is ______. (Multiple choice)

• A.The one with the higher BridgeID value will be selected as the root bridge
• B.The smaller the priority value, the lower the priority
• C.The BridgeID value is a combination of the priority of the bridge and the MAC address of the bridge. The front is the priority, and the back is the MAC address.
• D.When the priority is the same, the smaller the MAC address, the higher the priority
• E.The default priority value of the H3C Ethernet switch is 32768

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On the MSR router, use the ______ command to view the current running version of the device.

• A.display running
• B.display version
• C.display current-version
• D.display software

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The user can use the ______ command to view the history commands.

• A.display history-command
• B.display history-cache
• C.display history-cli
• D.display history-area

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