Answer:
Routing Information Protocol (RIP)
is the correct option.
Explanation:
- Routing Information Protocol (RIP) is a dynamic routing protocol which is used to find the optimal path between the source and the destination.
- It is a distance vector routing protocol that works on application layer of OSI model.
- It uses hop count as a routing metric.
- Hop count is the number of routers that occurs on path towards the destination. Path with the minimum hop count is taken as the optimal route to reach a destination. This best path is then put in the routing table.
- RIP does not support more than 15 hops from source to destination. This is to avoid routing loop in the network
- RIP broadcasts updates related to routing information every 30 seconds.
- Routers using this protocol exchange entire routing tables with neighboring routers periodically.
- Easy to configure but has slow convergence as compared to other protocols.
Open Shortest Path First (OSPF) is a routing protocol used to find the optimal path between the source and the destination using Shortest Path First. It is a network layer protocol. Its a link state protocol not a distance vector routing protocol so its not a correct option.
Border Gateway Protocol (BGP) is intended to exchange information on routing and accessibility between autonomous systems over the Internet . It doesn't use distance vector routing but uses path vector routing instead, So its not a correct option.
IGMP (Internet Group Message Protocol) is a networking protocol used on IP networks for hosts and neighboring routers for forming memberships in multicast groups. IGMP works on the network layer. Its also not a correct option.
