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MCQ

The geostationary satellite used for communication systems

rotates with the earth

remains stationary relative to the earth

is positioned over equator

All of the above

None of the above

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Terminals are required for

realtime, batch processing, and timesharing

realtime, timesharing, and distributed processing

realtime, distributed processing, and manager inquiry

realtime, timesharing, and message switching

None of the above

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Establishing a virtual connection is functionally equivalent to

Connecting as virtual memory

Physically connecting a DTE and DCE

Placing a telephone call prior to a conversation

Placing a modem prior to a conversation

None of the above

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Which of the following statement is correct?

A spin stabilized satellite used solar cells mounted on a cylinder body that continuously rotates so that 40 a time and it also uses gyroscopic action of a spinning satellite to maintain its orientati

A spin stabilized satellite uses solar panels whose cells are continually oriented toward the sun

Satellite transponders use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.

satellite transponders use a single frequency for reception and transmission from one point on earth to another

None of the above

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Which network topology is considered passive?

Cross

Ring

Star

Mesh

Bus

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What is the default subnet mask for a class B network?

127.0.01

255.0.0.0

255.255.0.0

255.255.255.0

None of the above

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History and Generations

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