CTEVT | Data Communication | Diploma in computer engineering | Question paper| 4th semester diploma in computer engineering
Data Communication - Question Paper 2077 :
Data Communication - Question Paper 2076 :
Council for Technical Education and Vocational Training
Office of the controller of Examinations
Sanothimi, Bhaktapur
Regular/Back 2076 Shrawan / Bhadra
Program : Diploma In Computer Engineering
Year/Part : II/II
Subject : Data Communication
Full Marks: 80 | Pass Marks 32 | Time: 3hrs.
Attempt Any Eight Questions.
1. What is PSTN? Explain about subscriber telephone and subscriber loop. What are the hierarchical networks? Explain [2+2+2+4 Marks]
2. Differentiate between Analog and Digital transmission. Describe about transmission media with diagram. [4+6 Marks]
3. Explain transmission impairments? Also elaborate major difference between LAN & WAN? [5+5 Marks]
4. List out the types of multiple access techniques? Compare pure ALOHA & slotted ALOHA. [5+5 Marks]
5. What is a PCM system? Explain about M-law & A-law. [4+6 Marks]
6. Explain about companding in PCM system. Also explain about T1 and E1 lines. [5+5 Marks]
7. Define switching? Explain packet switching & message switching with diagram? [2+8 Marks]
8. Why computer networking is important? Discuss about different modes of transmission with example. [4+6 Marks]
9. Write short notes on. (Any Two)
a) Network typologies
b) Private Branch Exchange
c) Line codes
**The End**
