Saturday, August 31, 2013

Hi Bulldogs!

Time for Thursday's free CCENT and CCNA practice exam! Let's get right to it!

Question 1:  

Name the OSI layer where data is found in the following formats:

A.  frames

B.  bits

C.  packets

D.  segments

Question 2:

Give the number associated with each of the following OSI layers:

A.  Network

B.  Data Link

C.  Transport

D.  Session

Question 3:  

Of the following terms, which describes UDP?

A.  guaranteed delivery

B.  connection-oriented

C.  error detection via sequence and ACK numbers

D.  no windowing

4.   Briefly describe the three steps of the TCP three-way handshake.

The answers right after this brief, time-sensitive bulletin!

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Here are the answers!

1.  Frames -- Data Link

     Bits -- Physical

     Packets -- Network

     Segments -- Transport

2.  Network -- Layer 3

     Data Link -- Layer 2

     Transport -- Layer 4

     Session -- Layer 5

3.   Of those four statements, only "D" describes UDP.   The other three terms describe TCP.

4.  Server sends a SYN, recipient of that SYN sends a SYN/ACK back, and then the first server sends an ACK back. In short, "SYN, SYN/ACK, ACK". 

I'll see you Friday with another practice exam! Keep grinding on that CCENT and CCNA deadline -- you can beat it!

Chris B.

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