單項(xiàng)選擇題

Refer to the exhibit. Look at the command output. What would be the most probable reason for this port-ID mismatch？（）

A. spanning-tree misconfiguration
B. speed mismatch configuration
C. cabling problem
D. configuration problem

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單項(xiàng)選擇題

Which type of domains is interconnected using Multicast Source Discovery Protocol？（）

A.PIM-SM
B.PIM-DM
C.PIM-SSM
D.DVMRP

多項(xiàng)選擇題

An 802.1Q trunk is not coming up between two switches. The ports on both switches areconfigured as "switchport mode desirable." Assuming that there is no physical issue， choose two possible causes.（）

A. Incorrect VTP domain
B. Incorrect VTP password
C. Incorrect VTP mode
D. Incorrect VTP configuration revision