Assingment No. 02 CSC 339 Computer Communication & Networks (MCS).

COMSATS Virtual Campus

Islamabad

CSC 339 Computer Communication & Networks

Assignment-2

Maximum marks: 10   

Question 1

a)    List three techniques of digital-to-digital conversion.

b)    Compare and contrast PCM and DM.

c)     Define carrier signal and its role in analog transmission.

Question # 2

            In a digital transmission, the sender clock is 0.2 percent faster than the receiver clock. How many extra bits per second does the sender send if the data rate is 1 Mbps?

Question # 3

How many invalid (unused) code sequences can we have in 5B/6B encoding? How many in 3B/4B encoding?