Download JNTUH MCA 3rd Sem R17 2022 March-April 843AB Marchapril Computer Networks Question Paper

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Code No: 843AB

R17

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA III Semester Examinations, March/April - 2022

COMPUTER NETWORKS

Time: 3 Hours Max. Marks: 75

Answer any five questions

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All questions carry equal marks

1. a) Differentiate between the OSI & TCP/IP models. [15]
2. b) Illustrate different types of transmission media, highlight their merits and demerits. [15]
3. Compare various sliding window protocols of data link layer.
4. What is slotted ALOHA? Mention its advantages and disadvantages. [7+8]

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5. What is CSMA? Differentiate between 1-persistent, non-persistent and p-persistent CSMA. [15]
6. Compare and contrast link-state and distance-Vector routing algorithms. [15]
7. What is DNS? What are the services provided by DNS and explain how it works? [15]
8. What are the services provided by transport layer to the upper layers? Compare TCP and UDP protocols. [8+7]
9. What is an electronic mail? Describe in brief about sending and receiving e-mail. Explain the significance of HTTP in WWW. [8+7]

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