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STP & VTP Questions

March 16th, 2020 Go to comments

Question 1

Question 2

Explanation

Portfast feature should only be used on edge ports (ports directly connected to end stations). Neither edge ports or PortFast enabled ports generate topology changes when the link toggles so we cannot say Portfast reduces the STP convergence time.

PortFast causes a switch or trunk port to enter the spanning tree forwarding state immediately, bypassing the listening and learning states so answer C is the best choice.

Question 3

Explanation

Enabling the PortFast feature causes a switch or a trunk port to enter the STP forwarding-state immediately or upon a linkup event, thus bypassing the listening and learning states.

Note: To enable portfast on a trunk port you need the trunk keyword “spanning-tree portfast trunk

Question 4

Explanation

The VTP mode of SW2 is transparent so it only forwards the VTP updates it receives to its trunk links without processing them.

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