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25 votes
25 votes

A $2$ $km$ long broadcast LAN has $10^7$ bps bandwidth and uses CSMA/CD. The signal travels along the wire at $2 \times 10^8$ m/s. What is the minimum packet size that can be used on this network?

  1. $50$ $\text{bytes}$
  2. $100$ $\text{bytes}$
  3. $200$ $\text{bytes}$
  4. None of the above
in Computer Networks edited by
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6 Answers

–5 votes
–5 votes
ans 200 bit

1 comment

Should be100 bits.
–2
–2
–5 votes
–5 votes

Lets explore the answer 

As we know:

TT = framesize/Bandwidth;

and minimum time taken to acquire the line is = 2*pt

TT = 2*pt

min frame size = 2*pt*b.w;

=200 bits(C)

1 comment

The answer will be 200 bits, not bytes.

hence option D).
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