Frames-Data Communication Network-Quiz, Exercises of Data Communication Systems and Computer Networks

Sir. Prajin Ahuja took this quiz at Birla Institute of Technology and Science. Its purpose was to evaluate students understanding for course Data Communication Network. In this main topics are: Frame, Acknowledge, Piggybacking, Host, CAC, Server, Web, Interchangeably, Workstations, Mail

Typology: Exercises

2011/2012

Uploaded on 07/26/2012

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ASSIGNMENT NO 3
Total Marks: 20 Dated: 14-04-08
Q.NO.1:
Draw the sender and receiver windows for a system using Go-back-N given the
following.
a. Frame 0 is sent Frame 0 is acknowledged.
b. Frame 1 and 2 are sent; frame 1 and 2 are acknowledged.
c. Frame 3,4,5 are sent: frame 4 is acknowledged; timer for frame 5 expires.
d. Frames 5,6, and 7 are sent; frame 4 through 7 are acknowledged.
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ASSIGNMENT NO 3

Total Marks: 20 Dated: 14-04-

Q.NO.1:

Draw the sender and receiver windows for a system using Go-back-N given the following. a. Frame 0 is sent Frame 0 is acknowledged. b. Frame 1 and 2 are sent; frame 1 and 2 are acknowledged. c. Frame 3,4,5 are sent: frame 4 is acknowledged; timer for frame 5 expires. d. Frames 5,6, and 7 are sent; frame 4 through 7 are acknowledged.

Q.NO.2:

Repeat Q.NO.1 , using selective reject ARQ.

Q.NO.3:

What is the difference between a host and an end system? List the types of end systems.

There is no difference. The words “host” and “end system” can be used interchangeably. End systems include PCs, workstations, Web servers, mail servers, Internet-connected PDAs, WebTVs, etc.

Q.NO.4:

What is the error detection method used by upper Layers?

Checksum.

Q.NO.5:

What is piggybacking? Piggybacking is combining data to be sent and acknowledgment of the received frame in one single frame.