JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III PRINCIPLES OF COMPUTER COMMUNICATIONS AND NETWORKS Previous Question Paper (August/September - 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
What is computer communication system?
Answer
A computer communication system is a collection of hardware and software components that enable the exchange of data between two or more computing devices over a transmission medium to facilitate information sharing and resource utilization.
What are the fundamental characteristics for effective data communication?
Answer
The fundamental characteristics for effective data communication are:
- Delivery: The system must deliver data to the correct destination and only to the intended device.
- Accuracy: The system must deliver data accurately, ensuring the received data is identical to the transmitted data.
- Timeliness: The system must deliver data in a timely manner, as delayed data is often useless.
- Jitter: The system must minimize the variation in the packet arrival time to ensure smooth data stream delivery.
Define modulation.
Answer
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How to calculate the speed of the communication channel?
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Define line coding schemes.
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What are the key differences between analog and digital signals?
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Define media access control.
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How do guided media differ from unguided media?
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What is the role of repeaters?
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Write about the Hubs and switches.
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Part B
Explain the difference between data communication and computer networking.
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Differentiate between peer-to-peer and client-server network models.
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Describe the characteristics of Local Area Network (LAN).
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What is the purpose of IP addressing in a network? Explain.
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Compare circuit switching, packet switching, and message switching in network communication.
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What are the main communication service methods in networks, and how do they differ?
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List out the advantages of using serial transmission over parallel transmission.
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List out the characteristics of Analog Signals and explain them with necessary diagrammatic representations.
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Explain the concept of Frequency Division Multiplexing (FDM) in digital carrier systems.
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Discuss the impact of channel capacity and bit error rate on digital carrier system performance.
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Analyze the advantages of optical fiber over twisted pair and coaxial cable.
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Examine the access method used by wireless LAN.
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Explain how the Medium Access Control (MAC) sub-layer manages access to the shared communication medium.
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How does the data link layer ensure reliable communication between devices?
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What are some key differences between SC, LC, and ST connectors in fiber optic networks?
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List out the common challenges in selecting the right transceiver for specific network needs.
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Discuss the role of media converters in extending network distances.
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Explain the difference between wired and wireless network interface cards.
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