Sunday, November 24, 2013






Here's your CCNP SWITCH and TSHOOT Practice Exam Post for Sunday, November 24!

Today's post includes one of the most popular videos I've ever created -- and it just happen to cover today's practice exam topic in depth!

Let's dive right in!

Today's Topic:  Root Guard

1.  A port with Root Guard enabled receives an "inferior BPDU".   What will the state of that port be 15 seconds after that BPDU arrives on the port?

A.   Normal operation will continue.

B.   "err-disabled"

C.   "port-inconsistent"

D.   "shutdown"



2.    Root Guard can be configured on what switches in your Cisco network?

A.  The root switch only.

B.  The root and secondary root switches only.

C.  Any switches you like.

D.  Any switches except the root and secondary root.



3.   On what basis is Root Guard enabled?

A.  per-port

B.  per-VLAN

C.  All ports or no ports

D.  All VLANs or no VLANs 


I'll have the answers for you right after this quick message!




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And now... the answers!

1.  "A".  Root Guard will take action when a superior BPDU is received, but will do nothing when an inferior BPDU comes in.


2.  "C".  Root Guard can be configured on any switches you'd like to run it on.


3.   "A".  You'll enable Root Guard on a per-port basis.


Here's a great video where you can see Root Guard in action!  Enjoy, and I'll see you Monday with more!

Chris B.





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