Computer Networking
A modem that is attached to the telephone system by jamming the phone's handset into two flexible receptacles in the coupler?

None of these
acoustic coupler
time-division multiplexer
gateway
bridge

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Computer Networking
The Token-Ring architecture was developed for a more efficient way to determine who should be transmitting at any one time. With Ethernet, collisions may take place, causing the transmitting computers to have to retransmit their data. The use of token guarantees that only one computer can transmit at a time. What happens as the network increases in size? Choose the best answer

The network becomes less efficient
The network becomes more efficient
The speed of the Token-Ring network must be 16Mbps if the number of nodes is greater then 500
An additional token is added for every 1,000 nodes
After the number of nodes exceeds 550, the Multistation Access Unit must be replaced by the more powerful Hyperstation Unified Bandwidth device

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Computer Networking
Demodulation is the process of

converting analog signals to digital signals
combining many low speed channels into one high speed channel
dividing the high-speed signals into frequency bands
None of these
converting digital signals to analog signals

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