Question

Which among the following combination of layers can be used to improve blockage control?

a.

Physical-Datalink

b.

Datalink – network

c.

Physical-Transport layer

d.

Datalink- Transport layer

Posted under Cognitive Radio

Answer: (c).Physical-Transport layer Explanation:The transport layer can correctly classify the reason for blockage provided the signal transmission information collected in the physical layer is made available via cross-layer design. For example, it can be used to detect the cause for packet loss.

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Q. Which among the following combination of layers can be used to improve blockage control?

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