KERALA UNIVERSITY Class 6 data communication Question Paper 2019

Practice authentic previous year questions for better exam preparation.

Sample Questions

(b) Explain the working principle of Pulse Code Modulation (PCM). OR
(b) Explain following transmission impairments :
(a) Define Channel Capacity. Explain Shannon's channel capacity formula. Signal to Noise Ratio is often given in decibels. Assume SNR ${ }_{\mathrm{db}}=36$ and the channel bandwidth is 2 Mhz . Calculate theoretical channel capacity.
(b) Discuss Delta modulation technique.
(i) NRZ (ii) Biphase (iii) Multilevel binary. 10