SRM University 2007 B.Tech Electronics and Communications Engineering Bank : Integrated Services Digital Network (ISDN) - Question Paper

S.R.M. University
School of Electronics & Communication Engineering
ques. Bank
Subject Code : EC454
Subject Name : Integrated Services Digital Network (ISDN)
Year & Semester : IV Year VIII Sem. (ECE)

UNIT-I
PART- A
1. Compare FAX and E-mail?
2. Give a few B-ISDN standards?
3. Define circuit switching?
4. Explain packet switching?
5. What do you mean by analog transmission?
6. Explain about DQDB?
7. Explain the various kinds of computer networks?
8. What is broadband? discuss the need for broadband?
9. Give a few applications of FDDI?
10. What is Frame relay?
11. Give a few applications of Frame relay?
12. Explain pulse code modulation?
13. Compare analog and digital transmission?
14. Draw the block diagram of ISDN?
PART-B
1. Explain in detail ISO reference model for OSI?
2. Explain with block diagram
a. Video text b. teletext
3. Explain the different B-ISDN services with block diagram?
4. Explain in detail about the frame relay used in ISDN?
5. Explain the subsequent with example
a) Quadrature amplitude modulation. b) Pulse code modulation.

UNIT – II
Part – A
1. Give the standards of B-ISDN?
2. Give a few requirements of B-ISDN?
3. Name the various protocols of physical layer of B-ISDN?
4. What is the use of controlling and signaling plane?
5. What is the use of user plane?
6. Differentiate valid cell and invalid cell?
7. List the functions of transmission convergence sublayer?
8. Define cell rate decoupling?
9. Give the 5 classes of AAL services?
10. Define Cell multiplexing?

Part – B
1. Explain the 3 planes of B-ISDN reference protocol model and also discuss the different ATM cell types?
2. Explain the physical layer functions of broadband functional architecture?
3. Explain the ATM layer functions of BISDN?
4. Explain with block diagram Physical layer of BISDN protocol?
5. Explain the subsequent in detail with block diagram?
a) AAL one b) AAL 5
UNIT – III
PART – A
1. Name a few physical configurations used in a customer network?
2. Draw the block diagram of reference configuration of the BISDN UNI?
3. Name a few functions of BISDN higher layers?
4. What is the main task of plane management?
5. Explain the functions of layer management?
6. Explain performance monitoring?
7. Name a few Phase one signaling capabilities?
8. Classify the services offered by BISDN?
9. Give a few examples of broadband videotex services?
10. Explain meta signaling channel?

PART – B
1. Explain in detail the different configurations of user-network interface aspects?
2. Explain the different BISDN services with block diagram?
3. Explain the subsequent
a) Network Layering b) info transfer and signaling capabilities
4. Explain the subsequent
a) Signaling principles b) Traffic control
5. Explain BISDN higher layers with block diagram?

UNIT-IV
PART A
1. What are concentrators and multiplexers in ATM switch core?
2. How ATM switching is carried out?
3. Mention the ATM switching requirements.
4. What is a switched Ethernet?
5. What a trunk network?
6. What are the broadband transmission functions?
7. What is self routing principle in ATM switching?
8. What are requirements for ATM based broadband switching?
9. What are the functions of software architecture in an ATM switch?
10. Mention the ATM WAN requirements.
11. What is traffic engineering?
12. What are the benefits of CATV architecture?
13. Define throughput in a network.
14. Mention the reasons for delay in a network.
15. Compare TDM & ATM.
16. Differentiate ranging from Hub and switch.
17. What is LAN emulation?
18. How LAN environments are categorized?
19. What is the need for transition to ATM based WAN?


PART B
1. Explain the ATM switching matrix with relevant diagrams.
2. Explain how S0NET multiplexer works with a block diagram
3. Explain the broadband transmission functions
4. Discuss the transition to ATM-based LAN and mention the advantages.
5. Explain the operation of ATM CATV Networks
UNIT- V
PART - A
1. What are the building blocks of the broad band network?
2. Define a broadband access network.
3. What are the network design requirements for broadband access?
4. List the broadband access network topologies.
5. What are requirements for broadband backbone network design?
6. What is a broadband transmission system?

PART - B
1. Explain the broad band access network aspects with relevant block diagram
2. Explain the broadband backbone network design with relevant diagrams?
3. Discuss the future of broadband communication aspects
4. Explain the broadband reference network architecture with relevant diagrams.

Earning:   Approval pending.