1 votes 1 votes In case of network layer, which among the following is incorrect? A)ISO X.25 B)DNU C)IP D)X25 PLP Shubham Sharma 2 asked Mar 18, 2017 Shubham Sharma 2 725 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply srestha commented Mar 18, 2017 reply Follow Share IP is in network layer, TCP-IP protocol is a network layer protocol. ISO should also for internet protocol. So, ans should be in between b) and d) 0 votes 0 votes Devshree Dubey commented Mar 18, 2017 reply Follow Share X25 PLP expands to Packet Layer Protocol and a network layer protocol. :). It cud possibly b d). :) –1 votes –1 votes Please log in or register to add a comment.
Best answer 2 votes 2 votes Answer is B) DNU , which not use in network layer, DNU use in SDH-Sonet a) ISO X.25 use in network Layer - [1] c) IP - use in network Layer , it is Internet layer protocol [2] d) X25 PLP - use in network layer, it is the Network Layer protocol for the X.25 protocol suite. [3] References: [1] http://nptel.ac.in/courses/106105080/pdf/M4L4.pdf : page 6 [2] https://en.wikipedia.org/wiki/Internet_layer [3] https://en.wikipedia.org/wiki/Packet_Layer_Protocol Bikram answered Mar 20, 2017 • selected Mar 20, 2017 by Shubham Sharma 2 Bikram comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Shubham Sharma 2 commented Mar 20, 2017 reply Follow Share SONET can carry nearly any higher-level protocol (including IP), If sonet is carrying IP protocol then it will be working on Network Layer. https://www.lifewire.com/sonet-synchronous-optical-network-816475 0 votes 0 votes Bikram commented Mar 20, 2017 reply Follow Share No you thinking wrongly, read that Nptel pdf i provided in 6th page , your doubt will clear. 0 votes 0 votes Shubham Sharma 2 commented Mar 20, 2017 reply Follow Share Cleared.thanks for info provided. 0 votes 0 votes Please log in or register to add a comment.
