List of top Computer Science & Information Technology Questions on Computer Networks

Choose the correct set for wireless transmission in physical layer

The set of functions of Data Link Layer are

Match the devices to the OSI layer in which they operate.

Which among the following is an interior gateway routing protocol?

In Cryptography, Caesar cipher is a

How many keys are used in common legacy Triple DES algorithm of cryptography?

Which of the following scheme helps to provide nonrepudiation?

Which OSI layer operates Hypertext Transfer Protocol (HTTP)?

Which algorithm controls congestion?

What is the maximum size of TCP header?

With respect to a TCP connection between a client and a server, which of the following is true?

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?

Consider three machines M, N, and P with IP addresses 100.10.5.2, 100.10.5.5, and 100.10.5.6 respectively. The subnet mask is set to 255.255.255.252 for all the three machines. Which one of the following is true?

A machine receives an IPv4 datagram. The protocol field of the IPv4 header has the protocol number of a protocol X. Which ONE of the following is NOT a possible candidate for X?

Consider a network that uses Ethernet and IPv4. Assume that IPv4 headers do not use any options field. Each Ethernet frame can carry a maximum of 1500 bytes in its data field. A UDP segment is transmitted. The payload (data) in the UDP segment is 7488 bytes. Which ONE of the following choices has the CORRECT total number of fragments transmitted and the size of the last fragment including IPv4 header?