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86.
To reset switch ports that have been put into the errdisable mode by UDLD, which one of the following commands should you use?
- A.clear errdisable udld
- B.udld reset
- C.no udld
- D.show udld errdisable
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
87.
Which of the following features effectively disables spanning-tree operation on a switch port?
- A.STP PortFast
- B.STP BPDU filtering
- C.STP BPDU Guard
- D.STP Root Guard
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
88.
What must a switch do when it receives a UDLD message on a link?
- A.Relay the message on to other switches
- B.Send a UDLD acknowledgment
- C.Echo the message back across the link
- D.Drop the message
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
89.
UDLD must detect a unidirectional link before which of the following?
- A.The Max Age timer expires.
- B.STP moves the link to the Blocking state.
- C.STP moves the link to the Forwarding state
- D.STP moves the link to the Listening state.
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
90.
Which of the following features can actively test for the loss of the receive side of a link between switches?
- A.POST
- B.BPDU
- C.UDLD
- D.STP
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
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