MadeEasy Subject Test: Computer Networks - Sliding Window

Question

In list II , the 2nd point and 4th point both are correct for GBN according to me.

Answer 1

I think it is option B. 

Point #4 is valid for all the sliding window protocols. Therefore we can't match with a particular protocol so eliminate #4.

Now we have 2 options to consider either A or B. The best match for List I.A is List II.3.

From List II.1,

Each frame sent or resent needs a timer...

 we can infer that single frame can be resent, this is the mechanism of selective repeat which resends only the lost/damaged frames unlike GBN which sender the N frames.Thus, List I.C can be matched with List II.1.

Thus, we can derive the answer as option B

Comments

I also chose optiob B, answer given as C.