COMPUTER NETWORK MID--1 QUETIONS

1.wat is cn? lan,man,wan
2.conectn oriented conectionless service....
3.a)twisted pair
b)co-axial cable
c)fiber optics
4)osi ref model
5)tcp/ip ref modl
6)data link layer framing methods
7)error corrrecting codes(CRC)
8)sliding window protocal using go back and selection repeat protocols
9)define optimality principle.exp datagram subnet and virtual circuit n/ws
10)shortest path routing alg
11)distance vector alg
12)link state routing alg