多項(xiàng)選擇題

Refer to the exhibit. Initially， LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA.
Which two statements are true about the possible result of attaching the second link？（）

A.The switch port attached to LinkB will not transistion to up.
B.One of the two switch ports attached to the hub will go into blocking mode when a BPDU is received.
C.Both switch ports attached to the hub will transition to the blocking state.
D.A heavy traffic load could cause BPDU transmissions to be blocked and leave a switching loop.
E.The switch port attached to LinkA will immediately transition to the blocking state.

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單項(xiàng)選擇題

How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）

A.All ports will temporarily transition to the learning state for a period equal to the max age timer plus the forward delay interval.
B.All ports will transition temporarily to the learning state for a period equal to the forward delay interval.
C.The default aging time for MAC address entries will be reduced for a period of the max age timer plus the forward delay interval.
D.The default hello time for configuration BDPUs will be reduced for the period of the max age timer.

多項(xiàng)選擇題

What two things will occur when an edge port receives a BPDU？（）

A.The port immediately transitions to the Forwarding state.
B.The switch generates a Topology Change Notification （TCN） BPDU.
C.The port immediately transitions to the err-disable state.
D.The port becomes a normal STP switch port.

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Refer to the exhibit. Initially， LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA. Which two statements are true about the possible result of attaching the second link？（）

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How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）

What two things will occur when an edge port receives a BPDU？（）

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Refer to the exhibit. Initially， LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA.
Which two statements are true about the possible result of attaching the second link？（）

How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）

What two things will occur when an edge port receives a BPDU？（）