JNTU
JNTU B.Tech III Year DATA COMMUNICATION AND COMPUTER NETWORKS Previous Question Paper (March - 2024 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
PART – A
(25 Marks)
What is multiplexing?
Answer
Multiplexing is a technique that allows multiple analog or digital signals to be combined into one signal over a shared medium. This enables multiple users to share a single physical communication channel simultaneously, increasing transmission efficiency.
Classify the types of connections in data networks.
Answer
Data network connections are primarily classified into two types:
- Point-to-Point Connection: Provides a dedicated link between two specific devices.
- Multipoint (Multidrop) Connection: A single link is shared by three or more devices, where all devices share the same communication channel capacity.
What is the significance of HDLC?
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Discuss the role of CRC in error detection.
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Define network segmentation.
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What is logical addressing in the context of the network layer?
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What is data traffic in networking?
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Write a short note on Congestion in network communication.
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Define FTP and its significance in internet protocols.
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Differentiate between DNS and URL.
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PART – B
(50 Marks)
Compare and contrast common network topologies, discussing their advantages and disadvantages.
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Describe the ISO/OSI model in detail and explain its relevance in modern networking.
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Explain how switching operates in different network architectures, such as circuit-switched, packet-switched, and cell-switched networks.
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Describe the role of the data link layer in the OSI model and its importance in networking.
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Demonstrate the concept of channelization in the context of medium access control.
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Compare and contrast point-to-point protocols commonly used in the data link layer.
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Examine the challenges faced in data transmission over noisy channels and the techniques to mitigate them.
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Summarize the functioning of tunneling in networking, providing examples of its applications.
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Determine the factors influencing the choice between unicast and multicast communication in network design.
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Discuss the impact of network layer protocols on network performance and scalability.
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Compare and contrast the reliability mechanisms of UDP and TCP protocols.
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Discuss the role of QoS in ensuring a seamless user experience in multimedia streaming applications.
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Evaluate the effectiveness of differentiated services in prioritizing network traffic, citing real-world examples.
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Explain the following terms:
Domain Name Space
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SMTP
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Outline the components and functioning of the World Wide Web (WWW), including the role of HTTP in fetching and rendering web pages.
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