Question

A system has n-layered prototcol hierarchy.Application generate message of length M bytes. At each layer h-byte header is added. What fraction of bandwidth will be covered by headers. Will it be efficient usage of bandwidth? Justify.

Answer 1

Fraction of bandwidth covered by headers = nh / (M+ nh)

Explanation:

Given: A system has n-layered prototcol hierarchy.

Application generates message of length M bytes.

At each layer, h-byte header is added.

Find: Fraction of bandwidth covered by headers. Will it be efficient usage of bandwidth?

Solution:

Header bytes per layer = h

Total header bytes for n layers = n*h

Message contains message bytes and header bytes = M + nh

Fraction of bandwidth covered by headers = nh / (M+ nh)