mcq on ATM(networking)

Q1.ATM breaks all traffic into 53-Byte cells because

A.53-Byte cells are the ideal size for the voice communication

B.53-Byte cells are the ideal size for data communication

C.53-Byte cells are the ideal size for circuit switching

D.53-Byte cells are the compromised size for both voice and data communication

Q2.What gives ATM network the ability to operate at different data rates and why?

A.Its short,fixed length cells:Allows the prediction of the size of buffers to be used.

B.Its short,fixed length cells:Enables the cells to be transported via different routes.

C.Its short,fixed length cells:Short delays for voice traffic.

D.it's short,5-Byte header:Less delay for routing the cells.

Q3.Why is ATM the goal for future networking?

A.It is efficient for data transfer.

B.It's the only technology suitable for transmission of digital television. 

C.It allows the integration of voice,data and video into one network.

D.It creates an error free network.

Q4.Why is Frame Relay's throughput lower than that of ATM?

A.Frame Relaying have error control(ARQ) functionality but not ATM.

B.ATM does not need to have CRC checking/generation or bit stuffings functionality in the

packets as in Frame Relay.

C.Frame Relaying needs to do multiplexing of logical channels but not ATM.

D.Although both Frame relay and ATM have frame boundary recognition(flags) ,ATM dosen't

have bit stuffing as in frame Relaying.

Q5.Which of the following is done in the physical layer of the ATM network?

A.Cell multiplexing and demultiplexing

B.Generic flow control

C.Transmission frame generation/recovery

D.Monitoring of the user information field for bit errors and possible corrective actions

Q6.ATM is said to be a connection oriented technology.What does this mean and why is it necessary?

A.Cells travels through the same path to the receiver.By This,cell do not have to be rearranged.

B.Cells travels through different paths.Therefore cells can reach the receiver faster.

C.A path is reserved exclusively for one user.Arrangement of cells is not necessary 

D.Cells are transmitted using fibre optic cables.Cells would be less susceptible to errors.

Q7.Which of the following is not the function of the AAL?

A.Cell header generation.

B.Handling of lost and misinserted cell.

C.Handling of cell delay variation.

D.Segmentation and reassembly of user information

Q8.Which of the following is not the benifit of an ATM LAN ?

A.Better performance concerning with delays.

B.Very high aggeregate throughput

C.Interconnecting existing LANs

D.Simpler control and network management

Q9.What advantage does ATM have over STM ?

A.Unlike ATM,time slots provided by STM for a particular user cannot be grabbed by another

user.

B.It is cheaper to implement. 

C.ATM is suitable for real time traffic but not ATM

D.Time slots for STM occurs at regular intervals.

answer

Q10.Which of the following is not true about the difference of B-ISDN as compared to ISDN?

A.B-ISDN provides for communication services with very high bit rate requirements such as

digital television

B.B-ISDN uses optical fibre cable whereas ISDN makes us of the existing infrastructure.

C.B-ISDN uses only packet switching whereas ISDN does not perform packet switching. 

D.The bit rate for ISDN is prespecified unlike B-ISDN