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I applied via Naukri.com and was interviewed before Oct 2022. There were 3 interview rounds.
OSPF (Open Shortest Path First) is a routing protocol used to determine the best path for data packets in a network.
OSPF is a link-state routing protocol
It uses Dijkstra's algorithm to calculate the shortest path
OSPF routers exchange link-state advertisements (LSAs) to build a topology map
It supports VLSM (Variable Length Subnet Masking) and CIDR (Classless Inter-Domain Routing)
OSPF areas are used to divide large netwo
BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems on the internet.
BGP is used to make routing decisions based on network policies, path attributes, and network reachability.
It operates on TCP port 179 and uses TCP connections to exchange routing information.
BGP routers maintain a table of IP prefixes and their corresponding AS paths to determin...
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