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Computer Networking

Computer Networking
Which of the following medium access control technique is used for bus/tree?

MAC
token bus
token ring
CSMA
None of these

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Computer Networking
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?

Link access procedure (LAP)
None of these
Telecommunications
Error detecting protocols
Communications software

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Computer Networking
Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

Layer 2
Layer 7
Layer 4
Layer 3

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Computer Networking
Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?

Videotex system
None of these
Microwave system
Fax system
Teletex system

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Computer Networking
Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?

10 slots
None of these
14 slots
5 slots
7 slots

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Computer Networking
Telecommunication networks frequently interconnect an organization with its customers and suppliers. Select the best fit for answer:

Bandwidth alternatives
Extranets
None of these
Switching alternating
Inter organizational networks

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