In this section of Data Communication and Networking – Virtual-Circuit Networks: Frame Relay and ATM MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topic. All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan.
This Section covers below lists of topics.
- Virtual circuit switching MCQs.
- Frame Relay MCQs.
- Asynchronous Transfer Mode (ATM) MCQs.
- User-to-network interface (UNI) MCQs.
- Network-to-network interface (NNI) MCQs.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. ________ is a virtual-circuit wide-area network that was designed in response to demands for a new type of WAN in the late 1980s and early 1990s.
- X.25
- Frame Relay
- ATM
- none of the above
B. Frame Relay
2. Frame Relay provides ________
- PVCs
- SVCs
- either (a) or (b)
- neither (a) nor (b)
C. either (a) or (b)
3. VCIs in Frame Relay are called ______.
- PVC
- SVC
- DLCIs
- none of the above
C. DLCIs
4. In Frame Relay, when a _____ is selected, the corresponding table entry is recorded for all switches by the administrator
- PVC
- SVC
- either (a) or (b)
- neither (a) nor (b)
A. PVC
5. In Frame Relay, when. ______ is selected, it requires establishing and terminating phases
- a PVC
- an SVC
- either (a) or (b)
- neither (a) nor (b)
B. an SVC
6. Frame Relay has _______
- only the physical layer
- only the data link
- the physical and data link layers
- the physical, data link, and network layers
C. the physical and data link layers
7. At the data link layer, Frame Relay uses a protocol that supports _____control
- flow
- error
- either (a) or (b)
- neither (a) nor (b)
D. neither (a) nor (b)
8. Frame Relay networks offer an option called ______________ that sends voice through the network.
- VOFR
- FRAD
- MUX
- none of the above
A. VOFR
9. In Frame Relay, an address can be ________ bytes
- only 2
- 2 to 3
- 2 to 4
- none of the above
C. 2 to 4
10. ________ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T
- X.25
- Frame Relay
- ATM
- none of the above
C. ATM
11. In Frame Relay, the EA field defines the number of bytes; it is _____ in the last byte of the address
- 0
- 1
- 2
- 3
B. 1
12. A _______ is defined as a small, fixed-size block of information
- frame
- packet
- cell
- none of the above
C. cell
13. To handle frames arriving from other protocols, Frame Relay uses a device called a _________
- VOFR
- FRAD
- MUX
- none of the above
B. FRAD
14. In ATM, a virtual connection is defined by _________
- VPI
- VCI
- DLCI
- a combination of (a) and (b)
D. a combination of (a) and (b)
15. The ATM standard defines ______ layers
- two
- three
- four
- five
B. three
16. The VPI of a UNI is _______ bits in length
- 8
- 12
- 16
- 24
A. 8
17. The VPI of an NNI is _______ bits in length
- 8
- 12
- 16
- 24
B. 12
18. The ATM data packet is a cell composed of ______ bytes
- 40
- 50
- 52
- 53
D. 53
19. ______ eliminates the varying delay times associated with different-size packets
- X.25
- Frame Relay
- ATM
- all of the above
C. ATM
20. A(n) ______ is the interface between a user and an ATM switch.
- UNI
- NNI
- NNN
- None of the above
A. UNI
21. ________ is the interface between two ATM switches.
- UNI
- NNI
- NNN
- none of the above
B. NNI
22. In ATM, connection between two endpoints is accomplished through _______
- TPs
- VPs
- VCs
- all of the above
D. all of the above
23. In ATM, the _______layer accepts transmissions from upper-layer services and maps them into ATM cells
- physical
- ATM
- AAL
- none of the above
C. AAL
24. In ATM, the ______ layer provides routing, traffic management, switching, and multiplexing services
- physical
- ATM
- AAL
- none of the above
B. ATM
25. In ATM, the _____ layer defines the transmission medium, bit transmission, encoding, and electrical-to-optical transformation
- physical
- ATM layer
- AAL
- none of the above
A. physical
26. The AAL is divided into _______ sublayers
- two
- three
- four
- none of the above
A. two
27. In ATM, ______ is for constant-bit-rate data.
- AAL1
- AAL2
- AAL3/4
- AAL5
A. AAL1
28. In ATM, _______is for short packets
- AAL1
- AAL2
- AAL3/4
- AAL5
B. AAL2
29. In ATM, _____ is for conventional packet switching (virtual-circuit approach or datagram approach).
- AAL1
- AAL2
- AAL3/4
- AAL5
C. AAL3/4
30. In ATM, ______ is for packets requiring no sequencing and no error control mechanism.
- AAL1
- AAL2
- AAL3/4
- AAL5
D. AAL5
