Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech III COMPUTER NETWORKS Previous Question Paper (November/December - 2017 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
Write the advantages of optical fiber over twisted-pair and coaxial cables.
Answer
Optical fiber offers significantly higher bandwidth and lower signal attenuation compared to twisted-pair and coaxial cables. Additionally, it is immune to electromagnetic interference (EMI) and provides greater security as it is difficult to tap without detection.
What are the advantages of having layered architecture?
Answer
Layered architecture simplifies network design by breaking complex tasks into smaller, manageable sub-tasks. It promotes modularity, allowing independent development and updates of layers, and ensures interoperability between different vendors' hardware and software implementations.
Briefly explain the difference between switch and router.
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Sketch the Manchester encoding for the bit stream: 0001110101.
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Give the advantages of hierarchical routing.
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Differences between CO and CL.
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Explain DHCP.
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What are the functions of ICMP?
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What is the architecture of WWW?
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Explain the differences between POP3 and IMAP.
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Part B
Compare and contrast the OSI and TCP/IP reference models.
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What are the different types of error detection methods? Explain the CRC error detection technique using generator polynomial
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Discuss about the various transmission media available at the physical layer.
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Explain about GBN Sliding Window Protocol.
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Explain the differences between the switching methods.
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Elucidate the CSMA schemes.
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Illustrate the frame structure of IEEE 802.3.
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Give a detail note on the ALOHA protocols.
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Elucidate Distance Vector Routing Algorithm with example.
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Describe the problem and solutions associated with distance vector routing.
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Explain the general principles of congestion control.
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Describe congestion control in datagram subnets.
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Elucidate the special IP addresses used in internet.
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Discuss the significance and the operation of NAT.
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Illustrate the connection establishment and release in transport layer.
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How crash recovery is managed at the transport layer?
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Explain Real-time transport protocol.
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When user clicks a hyperlink, what are the steps that occur between the user’s click and the page being displayed?
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Write short notes on the following:
(a) MIME (b) Audio compression (c) DNS (d) Voice over IP.
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