Integrated Services Digital Network (ISDN)

Wireless & Mobile Communications

This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “Integrated Services Digital Network (ISDN)”.

1. ISDN stands for ___________
a) Integrated Services Digital Network
b) Integrated Services Discrete Network
c) Integrated Services Digital Node
d) Integrated Services Discrete Node

2. ISDN is based on the concept of __________
a) SS7
b) CCS

3. Signalling component that supports traffic between the end-user and network is called ________
a) Network signalling
b) Digital subscriber signalling
c) Access signalling
d) Subscriber system signalling

4. Access signalling is governed by the SS7 suite of protocols.
a) True
b) False

5. Information bearing channels in ISDN are called ______
a) D channels
b) Data channels
c) B channels
d) Voice channels

6. ISDN provides integrated end user access to only packet switched networks.
a) True
b) False

7. PRI interface in ISDN serves small capacity terminals.
a) True
b) False

8. Which of the following is based on ATM technology?
a) SS7
b) CCS

9. Which of the following is true for ATM?
a) Circuit switched
b) Multiple access technique
c) Multiplexing technique
d) Handle only voice users

10. ATM supports unidirectional transfer of data.
a) True
b) False

11. The data unit of ATM is ___________
a) Cell
b) Atom
c) Molecule
d) Packet

12. ATM cells have fixed length of __________
a) 48 bytes
b) 47 bytes
c) 5 bytes
d) 53 bytes

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