Computer Networking
Which of the following divides the high speed signal into frequency bands?

modem
None of these
frequency-division multiplexer
time-division multiplexer
t-switch

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Computer Networking
Why does the data communication industry use the layered OSI reference model?1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.4. It encourages industry standardization by defining what functions occur at each layer of the model.

1 and 4
2 and 3
1 only
3 only

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Computer Networking
You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?

IP addressing on the network is incorrect.
You must type the show ip rip command first.
Debug output is sent only to the console.
You must use the terminal monitor command.

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