UGC NET CSE | June 2012 | Part 2 | Question: 6

Question

Both hosts and routers and TCP/IP protocol software. However, routers do not use protocol from all layers. The layer for which the protocol software is not needed by a router is

• A. Layer – 5 (Application)
• B. Layer – 1 (Physical)
• C. Layer – 3 (Internet)
• D. Layer – 4 (Network Interface)

Answer 1

Routers work in following three layers

1)physical

2)data link

3)network layer

it does not work in above layers which include application layer hence A is the ans

Answer 2

Option-A

Router mainly contains the One netwok layer ,2*Data Link layer and 2*Physical Layer.

Answer 3

I think application layer

Answer 4

answer is a

Comments

router is a three layer device it needs physical data and network so as application layer is not there so i think answer is a