GATE CSE 2003 | Question: 83

Question

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?

• A. $50$ $\text{bytes}$
• B. $100$ $\text{bytes}$
• C. $200$ $\text{bytes}$
• D. None of the above

Answer 1

ans 200 bit

Comments

Should be100 bits.

Answer 2

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)

Comments

The answer will be 200 bits, not bytes.

hence option D).