單項選擇題

Refer to the exhibit. In the diagram, the switches are running IEEE 802.1w RSPT. On which ports should root guard be enabled in order to facilitate deterministic root bridge election under normal and failure scenarios? （）

A.GE-3/1，GE-3/2
B.FE-2/1，F(xiàn)E-3/2
C.GE-1/1，GE-1/2
D.GE-4/1，GE-4/2
E.GE-2/1，GE-2/2
F.GE-3/1，GE-3/2，GE-4/1，GE-4/2，F(xiàn)E-2/1，F(xiàn)E-3/2

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單項選擇題

Refer to the exhibit. In the diagram, the switches are running IEEE 802.1s MST. Which ports are in the MST blocking state?（）

A.GE-1/2 and GE 2/1
B.GE-1/1 and GE-2/2
C.GE-3/2 and GE 4/1
D.no ports are in the blocking state
E.There is not enough information to determine which ports are in the blocking state

多項選擇題

What two features in Cisco switches help prevent Layer 2 loops？（）

A.UniDirectional Link Detection
B.Hot Standby Router Protocol
C.Virtual Router Redundancy Protocol
D.PortFast
E.root guard
F.loop guard

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Refer to the exhibit. In the diagram, the switches are running IEEE 802.1w RSPT. On which ports should root guard be enabled in order to facilitate deterministic root bridge election under normal and failure scenarios? （）

你可能感興趣的試題

Refer to the exhibit. In the diagram, the switches are running IEEE 802.1s MST. Which ports are in the MST blocking state?（）

What two features in Cisco switches help prevent Layer 2 loops？（）