Tata Communications Customer Service Executive Interview Questions, Process, and Tips

OSPF is a routing protocol used in computer networks to determine the best path for data to travel.

• OSPF stands for Open Shortest Path First.

• It is a link-state routing protocol.

• It uses Dijkstra's algorithm to calculate the shortest path.

• OSPF routers exchange information about their connected links to build a topology map of the network.

• This allows the routers to determine the best path for data to travel.

• OSPF is commonl...read more

BGP and ISIS are routing protocols used in computer networks.

• BGP is used for routing between different autonomous systems while ISIS is used for routing within a single autonomous system.

• BGP uses path vector protocol while ISIS uses link-state protocol.

• BGP is more scalable and complex than ISIS.

• BGP is used in the internet while ISIS is used in enterprise networks.

• BGP supports both IPv4 and IPv6 while ISIS only supports

OSPF states are the different stages a router goes through when establishing and maintaining OSPF neighbor relationships.

• OSPF states include Down, Init, 2-Way, Exstart, Exchange, Loading, and Full.

• During the Down state, the router has no OSPF neighbor relationships.

• In the Init state, the router sends Hello packets to discover OSPF neighbors.

• The 2-Way state is reached when the router receives a Hello packet from a neigh...read more

Route reflector is a networking concept that allows for efficient distribution of routing information.

• Route reflectors are used in BGP (Border Gateway Protocol) networks to reduce the number of required peer connections.

• They work by reflecting routes received from one peer to other peers, reducing the need for each peer to maintain a full mesh of connections.

• Route reflectors can be configured in a hierarchy, with multi...read more