8 votes 8 votes ARP is A layer $3$ protocol that is used by layer $3$ A layer $2$ protocol that is used by layer $2$ A layer $3$ protocol that is used by layer $2$ A layer $2$ protocol that is used by layer $3$ Computer Networks go2025-mockgate-2 network-layering network-protocols + – gatecse asked Jan 17, 2021 • edited Jan 17, 2021 by Lakshman Bhaiya gatecse 573 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
4 votes 4 votes ARP is debatable whether a layer $2$ protocol or layer $3$ one as it is defined on network layer and used in layer 2. Best option here is $(C).$ More reference: https://networkengineering.stackexchange.com/questions/5064/on-which-layer-of-the-osi-model-does-the-arp-protocol-belong gatecse answered Jan 17, 2021 • edited Jan 17, 2021 by Lakshman Bhaiya gatecse comment Share Follow See all 2 Comments See all 2 2 Comments reply Nikhil_dhama commented Feb 2, 2021 i edited by Nikhil_dhama Feb 2, 2021 reply Follow Share “Data communication and networking 5E, Forouzan” According to standard text, it is defined in Network layer, and DLL uses it’s services ( as it sends Link-layer address to DLL). so ans should be (C). 20 votes 20 votes iamsubhrajit commented Jan 4, 2023 reply Follow Share In many of the sites like ibm, cisco discussion forum, ARP is considered to be layer 2 protocol. I guess ARP doesn't fits well in both of the layer and asking this debatable question creates ambiguity. 1 votes 1 votes Please log in or register to add a comment.
