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

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

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Computer Networking
A WATS arrangement

is always less expensive than flat-rate service
is never less expensive than flat-rate service
None of these
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long

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Computer Networking
UDP is:

Connection oriented and unreliable
Connectionless and unreliable
None of these
Not a part of the TCP/IP suite
Connection orientated and reliable

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