Question 5 Consider the figure below which is similar to Fig

Solution

1)  What are the delays (from sender to receiver, ignoring any playout delays) of packets 2 through 8? Note that each vertical and horizontal line segment in the figure has a length of 1, 2, or 3 time units.

Answer :

The delay of 2 packet is 8 slots.

The delay of 3 packet is 8 slots.

The delay of 4 packet is 8 slots.

The delay of 5 packet is 10 slots.

The delay of 6 packet is 9 slots.

The delay of 7 packet is 8 slots.

The delay of 8 packet is 8 slots.

2) If audio playout begins as soon as the first packet arrives at the receiver at t = 8, which of the first eight packets sent will not arrive in time for playout?

Answer :

2, 3, 4, 5, 6, 7, and 8 Packets will not be acknowledged in time for their playout if playout begins at t = 8.

3) If audio playout begins at t = 9, which of the first eight packets sent will not arrive in time for playout?

Answer :

3, 5 and 6 Packets will not be acknowledged in time for their playout if playout begins at t=9.

4)

What is the minimum playout delay at the receiver that results in all of the first eight packets arriving in time for their playout?

Answer :

There is No packets will reach after their playout time if playout time begins at t=10