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?

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

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Computer Networking
The packets switching concept was first proposed

in the early 1960s for military communication systems, mainly to handle speech
in the late 1980s for the Defense Ministry of US.
in the late 1950s for Defense Ministry of US
None of these
All of these

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Computer Networking
A front-end processor is

preliminary processor of batch jobs.
None of these
a processor in a large-scale computer that executes operating system instructions
a user computer system
a minicomputer that relieves main-frame computers at a computer centre of communications control functions

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