I'll be posting new practice exam questions for the CCNA, CCENT, CCNA Security, and CCNP exams all day Friday!

Be sure to read the post below this one regarding the CCNA exam change - there's some vital information there!

Let's get started!

CCNA / CCENT Practice Exam Question 1:

When you run "show interface serial0", you're hoping to see "Serial0 is up, line protocol is down".

Each of the following situations will result in a different (and undesirable) readout for that command.   Tell me *exactly* what the output will be when the following situations arise:

A.  The cable is loose

B.  There's an encapsulation issue

C.  There's an LMI mismatch issue 

D.  The router interface has been left at its open/shut default

E.  The DCE is not supplying the clockrate


CCNA and CCENT Question 2 and 3:

Convert the binary string 00110111 to decimal.

Convert the hex value 4aF to decimal.



The answers are right after this quick, important message regarding the CCNA exam change!



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______________________________


And now -- the answers!

Question 1:

A.   If the cable is loose, you'll see "Serial0 is down, line protocol is down".


B, C, E:  All three of these situations will result in "Serial0 is up, line protocol is down".  The interface is fine physically, but logically there's a problem.

D.  Cisco router interfaces are shut by default, so you'll see "Serial0 is administratively down, line protocol is down". 


Questions 2 and 3:

The binary string 00110111 converts to the decimal 55.

The hex value 4aF represents 4 units of 256, 10 units of 16, and 15 units of 1.

1024 +  160  +  15   =   1199


See you later today with more questions and a video or two!

Chris B.