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Authors:
James F. Kurose, Keith W. Ross
Chapter:
The Network Layer
Exercise:
Review
Question:11 | ISBN:9780132856201 | Edition: 6

Question

What is HOL blocking? Does it occur in input ports or output ports?

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Answer


A queued packet in an input queue must wait for transfer through the fabric is called HOL blocking. It is blocked by another packet at the head of the line. It occurs at the input port.


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