B.TECH - Semester 6 data communication Question Paper 2021 (dec)

Practice authentic previous year university questions for better exam preparation.

Sample Questions

List and explain components of data communication.
What is frame check sequence?
Why must a satellite have distinct uplink and downlink frequencies?
Why do you need encoding of data before sending over a medium?
Explain pulse code modulation.
Describe multilevel binary encoding.
Explain two types of transmission errors with example.
List the three basic steps involved in circuit switching.
Briefly explain convolution codes.
Write a short note on GSM. Answer any one full question from each module. Each question carries 20 marks.
(a) Discuss the key elements of the communications model.
(b) Write a short note on channel capacity.
(a) Describe propagation of light through optical fiber.
(b) Explain any two wireless transmission media.
(a) Describe any two multilevel binary digital-to-digital encoding techniques.
(b) Explain Delta Modulation with an example. OR
(a) Explain different methods used for encoding analog data into analog signals.
(b) Discuss the following types of multiplexing
(i) TDM (ii) FDM (iii) WDM. 2
(a) Explain the essential properties of a block error correcting code.
(b) What is packet switching technique? Explain it along with virtual circuit approach. OR
(a) Explain how two-dimensional parity check extends error detection capability.
(b) Explain GPRS in detail. ( $3 \times 20=60$ Marks)