Computer Networking
Which of the following refers to the terms "residual error rate"?

signal to noise ratio divided by the ratio of energy per bit to noise per hertz
the number of bit errors per twenty four hours of continuous operation on an asynchronous line
the probability that one or more errors will be detected when an error detection mechanism is used
None of these
The probability that one or more errors will be undetected when an error detection scheme is used

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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

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

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Computer Networking
Which command will create a dynamic pool named Todd that will provide you with 30 global addresses?

ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224
ip nat pool Todd 171.16.10.1 171.16.10.254 net 255.255.255.0
ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.240
ip nat pool todd 171.16.10.65 171.16.10.94 net 255.255.255.224

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