Computer Networking
The packets switching concept was first proposed

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

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Computer Networking
You type show running-config and get this output:[output cut]Line console 0 Exec-timeout 1 35 Password BIXPASSWD Login[output cut]What do the two numbers following the exec-timeout command mean?

If no router activity has been detected in 1 hour and 35 minutes, the console will be locked out.
If you're connected to the router by a Telnet connection, input must be detected within 1 minute and 35 seconds or the connection will be closed.
If no commands have been typed in 1 minute and 35 seconds, the console connection will be closed.
If no command has been typed in 35 seconds, the console connection will be closed.

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