JNTU
JNTU B.Tech III DATA COMMUNICATION AND COMPUTER NETWORKS Previous Question Paper (November/December - 2018 - R16)
Part A is compulsory. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
List various components in a network.
Answer
- Sender/Receiver: Devices that originate or receive data.
- Message: The information to be communicated.
- Transmission Medium: The physical path (wired or wireless) through which data travels.
- Protocol: A set of rules governing data communication.
- Network Interface Card (NIC): Hardware allowing devices to connect to the network.
List and define different network topologies.
Answer
- Mesh Topology: Every device has a dedicated point-to-point link to every other device.
- Star Topology: Each device has a dedicated point-to-point link to a central controller (hub/switch).
- Bus Topology: Multiple devices are connected to a single central cable (backbone).
- Ring Topology: Each device is connected to its two neighbors, forming a closed loop.
- Tree Topology: A hierarchical structure where nodes are connected in a branching manner.
Define bit stuffing and character stuffing.
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Briefly discuss about ALOHA.
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Why the class C is most commonly used Network class?
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Discuss how address mapping is performed.
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Mention Congestion Prevention Policies and how does it work.
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Flow control and Error control both are properties of Transport Layer and Data Link Layer. What you think is it duplicity of properties in both layer or is it ok? Comment.
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Define SNMP protocol.
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Discuss the properties of file transfer protocol.
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Part B
With a neat diagram explain the OSI reference model in detail? Explain the functions performed in each layer.
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What is multiplexing? Explain in detail about various types of multiplexing.
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Describe various error detection and correction techniques. The generator polynomial is
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What is high level data link control (HDLC)? Explain HDLC frame format in detail.
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What is classful addressing? Discuss class A, class B, class C, class D, class E address with its range in decimal dotted notation and example.
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Give an example to explain any one of the multicasting routing algorithm.
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Discuss the transport layer service primitives. What do you understand by 3 way hand shake Technique? Also discuss the TCP connection management.
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Compare and contrast between integrated services and Differential Services.
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Explain name – address and address – name resolution process.
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Describe the various parts of e-mail address and show the process of sending and receiving e-mails.
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