IGNOU BCA Sem-5 Assignment (CS-68 : Computer Network)

CS-68 : Computer Network

Assignment Code : BCA(5)-68/Assignment/09

Maximum Marks : 100 (weightage = 25)

Last Date of Submission : 30 th April, 2009/30th October, 2009

This assignment is having six questions. Answer all the questions.

Q. 1 (i) How do the layers of the Internet model correspond to the layers of the OSI model?  (10 marks)

(ii) What is the difference between a port address, a logical address (IP address) and a physical address (as defined by LAN or WAN)?

(10 marks)

(iii) Name some services provided by the application layer in the Internet model. (5 marks)

Q. 2 Describe the goals of multiplexing and two main multiplexing techniques.

(5 marks)

Q. 3 (i) List three design goals of ATM.

(ii) Describe the architecture of an ATM network.

(iii)What is the difference between two types of connections: PVC and SVC used in ATM? (15 marks)

Q. 4 (i) List the advantages of broadband coaxial cable over twisted pair.

(ii) What is the significance of twisting in twisted pair cable?

(iii) How do guided media differ from unguided media?

(15 marks)

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