Which layer ensures messages reach their destination system via an optimal route (done by planning the route).
Host A is connected to Router B. Router B is connected to Router C. Router is connected to Host D. How many hops away is Host D from Host A ?
Which agents are responsible for putting messages in inbox of the recipient.
You try "ping server1" and you get "unknown host server1" . Why ?
When do you use BGP, IGRP, OSPF, Static Routes?
Which command will cause the in.namded daemon to reread it's configuration files ?
Which layer of the OSI model provides synchronization between user tasks by placing checkpoints in the data stream?
2 kinds of answers a client can get from any DNS server are:
What are the different port role in STP and RSTP?
Which program displays program number, version, protocol, port number, service, and owner of RPC service (root) ?
Which layer transports data to and from application level, includes the destination port number, and also handles error detection and recovery.
Who is network administrator?
In what protocol, connection must be established before exchanging data. This is a reliable and requires more processing.