Net

Q1. (a) How many layers are there in our Internet model. (b) Describe each layer's responsibility shortly. (c) Which layer splits data into datagrams Q2. Does IP make any guarantees of delivering datagrams to a destination error-free? Explain it. Q3. What do you understand when we say IP is a connectionless service. Q4. (a) How does a router determine either to forward a datagram to an outgoing link or to drop it? b) How does traceroute command accomplish its task of finding all the routers on its path to the destination address and lists the IP addresses of these routers Q5. How many unique addresses can be achieved when we are restricted to use only 4 bits? Specify all of them