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Computer Networking : A Top-Down Approach

Computer Networking : A Top-down Approach

Authors:
James F. Kurose, Keith W. Ross
Exercise:
Review
Chapter:
Multimedia Networking
Edition:
6
ISBN:
9780132856201
Question:
17

 

Question

In Section 7.5, we discussed non-preemptive priority queuing. What would be preemptive priority queuing? Does preemptive priority queuing make sense for computer networks?

Answer

In section 7.5 we discussed that: Under a non-preemptive priority queuing discipline, the transmission of a packet is not interrupted once it has begun. 

So in preemptive priority queuing discipline, the transmission of a packet would be interrupted once it has begun.

Preemptive priority queuing doesn’t make sense for computer networks because during a transmission of packet if it is interrupted there will be a lot of packets lost in the computer network.

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