BCS-041 Fundamentals of Computer Network Solved Assignment 2018-2019

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Course Code : BCS-041
Course Title : Fundamentals of Computer Network
Assignment Number : BCA(4)/Assignment/2018-19
Maximum Marks : 100
Weightage : 25%
Last Dates for Submission : 15th October, 2018 (For July, 2018 Session)
15th April, 2019 (For January, 2019 Session)

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Description

Course Code : BCS-041
Course Title : Fundamentals of Computer Network
Assignment Number : BCA(4)/Assignment/2018-19
Maximum Marks : 100
Weightage : 25%
Last Dates for Submission : 15th October, 2018 (For July, 2018 Session)
15th April, 2019 (For January, 2019 Session)

There are four questions in this assignment, which carries 80 marks. Rest 20
marks are for viva voce. You may use illustrations and diagrams to enhance the
explanations. Please go through the guidelines regarding assignments given in
the Programme Guide for the format of presentation. Answer to each part of the
question should be confined to about 300 words.

Question 1:
(a) The datalink layers of Ethernet consists of LLC sublayer and MAC sublayer.
Describe functions of these sub layers. (4 Marks)
(b) Explain the advantages and disadvantages of any two types of guided media and
two types of unguided media transfer in computer networks. (8 Marks)
(c) Explain in detail, how communication is taking place starting from connection
establishment, data transfer and connection termination in Circuit switching and in
Packet switching. (8 Marks)
Question 2:
(a) Explain in details about the access method and frame format used in Ethernet and
token ring. Also, explain the CSMA/CD method of Ethernet. (10 Marks)
(b) What are the three main elements of distance vector algorithms. Explain the
distance vector routing algorithm. Also, Mention the limitations of distance vector
routing algorithm. (10 Marks)
Question 3:
(a) Explain the working of 3 bit sliding window protocol with suitable example.
(10 Marks)
(b) Why congestion control is an important activity of networking. Explain Leaky
bucket and Token bucket algorithm. (10 Marks)
Question 4:
(a) Explain the working of RSA algorithm with the help of an example. Explain each
step of encryption and decryption. (10 Marks)
(b) Explain the use of different fields of UDP and TCP header format. Also, draw a
diagram to illustrate the header format of TCP and UDP.

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