Ques 1.

Differentiate between single mode and multi-mode optical fiber.

Ques 2.

Briefly discuss the functions of various layers involved in TCP/IP model, also mention the protocols defined under each layer.

Ques 3.

What is count-to-infinity problem in distance vector routing protocol? How does it happen? Explain with an example.

Ques 4.

Define angle modulation. What are its types? Discuss the limitations of angle modulation.

Ques 5.

Calculate the CRC for bit sequence 1101011011 and generator polynomial is 10011. Note: Show all steps and calculation.

Ques 6.

What is Ad hoc Wireless Communication System? Explain

Ques 7.

What is ICMP? Discuss the ICMP message categories. Also, give at least two examples of each ICMP message category.

Ques 8.

What is NIC? Write the techniques used by NIC for data transfer.

Ques 9.

Write the steps for Message Digest 5 (MD5) algorithm

Ques 10.

Compare Hub and Switch. Give the advantages and disadvantages of both Hub and Switch. Briefly discuss the functions of layer-2 switch and layer-3 switch.

Ques 11.

Explain POP and IMAP. How does POP work? What are the advantages of IMAP over POP?

Ques 12.

Assume two prime numbers p and q are 3 and 5 respectively. Calculate private key and public key using RSA algorithm.

Ques 13.

Compare between CSMA/CD and token passing methods in Ethernet. Also explain how collisions are handled by CSMA/CD.

Ques 14.

What is round robin technique for transmission? How does polling differ from token passing?

Ques 15.

What is distance vector routing? Briefly discuss the problem of distance vector routing.

Ques 16.

What do you understand by the term Quality of Services (QoS). Discuss the techniques to improve QoS.