Computer Networking
A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

None of these
20 seconds
12 seconds
120 seconds
2 seconds

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Computer Networking
The network layer, in reference to the OSI model, provide

All of these
None of these
the interface between the X.25 network and packet mode device
data link procedures that provide for the exchange of data via frames that can be sent and received
the virtual circuit interface to packet-switched service

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Computer Networking
In geosynchronous orbit, satellite

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

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