QUESTION $2$

$[$TOTAL MARKS: $25]$

Q $2($a$)$

$[5$ Marks$]$

In $50$ words or less, explain why it is not possible to provide quality of service guarantees in the Internet.

Q $2($b$)$

$[8$ Marks$]$

Suppose we wished a traffic stream to have the following parameters:

Long term average rate $=100Mbps.$

Maximum rate $200Mbps$

Burst size $500$Mbits

Describe how you could use one or more Token$/$Leaky buckets to police this behaviour.