Computer Networking
Which of the following communications modes support two-way traffic but in only one direction of a time?

three-quarters duplex
simplex
full-of the above
half-duplex
None of these

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Computer Networking
In geosynchronous orbit, satellite

remains in a fixed position related to points on earth
None of these
moves simultaneously
moves faster than the earth's rotation so that it can cover larger portion of earth.
remains in a fixed position so that as earth rotates, it can fully cover the earth

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