4 votes 4 votes 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 Layer – 5 (Application) Layer – 1 (Physical) Layer – 3 (Internet) Layer – 4 (Network Interface) Computer Networks ugcnetcse-june2012-paper2 computer-networks network-layering + – go_editor asked Jul 4, 2016 go_editor 3.3k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
6 votes 6 votes 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 Sanjay Sharma answered Jul 9, 2016 Sanjay Sharma comment Share Follow See all 0 reply Please log in or register to add a comment.
3 votes 3 votes Option-A Router mainly contains the One netwok layer ,2*Data Link layer and 2*Physical Layer. Paras Nath answered Sep 18, 2016 Paras Nath comment Share Follow See all 0 reply Please log in or register to add a comment.
2 votes 2 votes I think application layer cse23 answered Jul 4, 2016 cse23 comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes answer is a vk01 answered Apr 4, 2017 vk01 comment Share Follow See 1 comment See all 1 1 comment reply Vishal Goyal commented Jun 1, 2017 reply Follow Share 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 0 votes 0 votes Please log in or register to add a comment.