Answer the following problems.

problem 1) In case a frame does not get received, how does the source get to know?

problem 2) What is a subnet mask used for? describe in detail.

problem 3) How is Rlogin used for management of servers?

problem 4) What is use of Reverse ARP?

problem 5) What is the use of flags in a TCP header?

problem 6) What are the different ICMP messages?

problem 7) describe the use of tracert.

problem 8) What do you mean by rlogin used for?

problem 9) describe in detail the main objectives of application layer.

problem 10) describe in detail that how does a source machine know that the TCP packet needs retransmission.