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Multiple Choice Quiz
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Please answer all questions.




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.
A)X.25
B)Frame Relay
C)ATM
D)none of the above



2Frame Relay provides ________.
A)PVCs
B)SVCs
C)either (a) or (b)
D)neither (a) nor (b)



3VCIs in Frame Relay are called ______.
A)PVC
B)SVC
C)DLCIs
D)none of the above



4In Frame Relay, when a _____ is selected, the corresponding table entry is recorded for all switches by the administrator
A)PVC
B)SVC
C)either (a) or (b)
D)neither (a) nor (b)



5In Frame Relay, when. ______ is selected, it requires establishing and terminating phases
A)a PVC
B)an SVC
C)either (a) or (b)
D)neither (a) nor (b)



6Frame Relay has _______.
A)only the physical layer
B)only the data link
C)the physical and data link layers
D)the physical, data link, and network layers



7At the data link layer, Frame Relay uses a protocol that supports _____control.
A)flow
B)error
C)either (a) or (b)
D)neither (a) nor (b)



8In Frame Relay, an address can be ________ bytes.
A)only 2
B)2 to 3
C)2 to 4
D)none of the above



9In Frame Relay, the EA field defines the number of bytes; it is _____ in the last byte of the address.
A)0
B)1
C)2
D)3



10To handle frames arriving from other protocols, Frame Relay uses a device called a _________.
A)VOFR
B)FRAD
C)MUX
D)none of the above



11Frame Relay networks offer an option called ______________ that sends voice through the network.
A)VOFR
B)FRAD
C)MUX
D)none of the above



12________ is the cell relay protocol designed by the corresponding Forum and adopted by the ITU-T.
A)X.25
B)Frame Relay
C)ATM
D)none of the above



13A _______ is defined as a small, fixed-size block of information.
A)frame
B)packet
C)cell
D)none of the above



14In ATM, a virtual connection is defined by _________.
A)VPI
B)VCI
C)DLCI
D)a combination of (a) and (b)



15The ATM standard defines ______ layers.
A)two
B)three
C)four
D)five



16The VPI of a UNI is _______ bits in length.
A)8
B)12
C)16
D)24



17The VPI of an NNI is _______ bits in length.
A)8
B)12
C)16
D)24



18The ATM data packet is a cell composed of ______ bytes.
A)40
B)50
C)52
D)53



19______ eliminates the varying delay times associated with different-size packets.
A)X.25
B)Frame Relay
C)ATM
D)all of the above



20A(n) ______ is the interface between a user and an ATM switch.
A)UNI
B)NNI
C)NNN
D)None of the above



21_________ is the interface between two ATM switches.
A)UNI
B)NNI
C)NNN
D)none of the above



22In ATM, connection between two endpoints is accomplished through _______.
A)TPs
B)VPs
C)VCs
D)all of the above



23In ATM, the _______layer accepts transmissions from upper-layer services and maps them into ATM cells.
A)physical
B)ATM
C)AAL
D)none of the above



24In ATM, the ______ layer provides routing, traffic management, switching, and multiplexing services.
A)physical
B)ATM
C)AAL
D)none of the above



25In ATM, the _____ layer defines the transmission medium, bit transmission, encoding, and electrical-to-optical transformation.
A)physical
B)ATM layer
C)AAL
D)none of the above



26The AAL is divided into _______ sublayers.
A)two
B)three
C)four
D)none of the above



27In ATM, ______ is for constant-bit-rate data.
A)AAL1
B)AAL2
C)AAL3/4
D)AAL5



28In ATM, _______is for short packets.
A)AAL1
B)AAL2
C)AAL3/4
D)AAL5



29In ATM, _____ is for conventional packet switching (virtual-circuit approach or datagram approach).
A)AAL1
B)AAL2
C)AAL3/4
D)AAL5



30In ATM, ______ is for packets requiring no sequencing and no error control mechanism.
A)AAL1
B)AAL2
C)AAL3/4
D)AAL5



31________ technology can be adapted for use in a LAN (ATM LAN).
A)X.25
B)Frame Relay
C)ATM
D)none of the above



32In a _____ ATM LAN, an ATM switch connects stations.
A)pure
B)legacy
C)mixed architecture
D)none of the above



33In a _______ ATM LAN, the backbone that connects traditional LANs uses ATM technology.
A)pure
B)legacy
C)mixed architecture
D)none of the above



34A _______ ATM LAN combines features of a pure ATM LAN and a legacy ATM LAN.
A)pure
B)legacy
C)mixed architecture
D)none of the above







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