SRM University 2007 B.Tech Electronics and Communications Engineering Bank for Communication Switching Techniques - Question Paper

SRM Institute of Science & Technology
School of Electronics & Communication Engineering
ques. Bank
Subject Code : EC300
Subject Name : Communication Switching Techniques
Year & Semester : III Year VI Sem. (ECE)

UNIT-I
PART-A

1. Define Switching System and what is the need for Switching System?
2. What is meant by a Tandem Exchange (or) Transit Exchange?
3. List the classifications of Switching System.
4. List the advantages of automatic Exchange over Manual Exchange.
5. What is meant by Step by Step Switching or Strowger Exchange?
6. Draw the signaling trend for various signaling tones in automatic exchanges?
7. List the 5 subscriber related signaling functions.
8. List the different switching techniques available for data networks.
9. What is meant by MODEM and write the need for MODEMs
10. Define Talk off and factors to decrease it.
11. List the kinds of signaling techniques.
12. Define a) IntraExchange (or) Register Signalling, b)Inter Exchange (or) Inter register Signalling.
13. Differentiate ranging from Inchannel and Common Channel Signalling.
14. List the differences ranging from Associated and Non-Associated Signalling.
15. List the differences ranging from Packet Switching and Circuit Switching.
16. List the differences ranging from Datagram Switching and Virtual Circuit Switching.
17. List the differences ranging from Pulse dialling and Multifrequency dialling.
18. Differentiate ranging from Common control and Direct Control swiching Network.
19. List the differences ranging from Voice and Data Traffic.
20. What is meant by Symmetric Network?
21. What is meant by Folded Network?
22. What is meant by Blocking Network?
23. What is the use of Interrupt Contact in an Uniselector?
24. List the factors that affect the functioning if a Uniselector.
25. Differentiate ranging from Uniselector and Twomotion Selector.
26. Write short notes about Pulse Dialling.
27. Write short notes on Multifrequency Dialling.
28. Differentiate ranging from Simplex, Half Duplex and Duplex Communication.
29. Write short notes on Subscriber Uniselector scheme.
30. List the differences ranging from Selector Hunter and Line Finder Approach.
31. List the various selector control circuits.
32. What is meant by Guarding circuit?
33. What is meant by Impulsing circuit?
34. What is meant by Homing circuit?
35. What is meant by Metering circuit?
36. What is meant by Ring Trip circuit?
37. What is meant by Alarm circuit?
38. Differentiate ranging from Map-in Memory and Map-in –Network.
39. List the various class of service info.
40. Give the procedure for establishing connection in a crossbar system.
41. Write short notes on Diagonal Cross point Matrix,
42. Draw the Blocking Crossbar Switch Configuration.
43. Draw the locally and externally Blocking Cross bar Switch .
44. Draw the locally Non blocking and externally Blocking Cross bar Switch.

Earning:   Approval pending.