The most likely cause for any type of line protocol being down is that a network administrator used the shutdown command on these lines to prohibit access to telnet, ssh and connection to the line con 0.
Ethernet 0/0 is down, line protocol is down
Serial 0/1 is up, line protocol is down
down's syndrome is more likely
A tornado
It will likely cause you to pass out resulting in extreme injury.
there may be the issue with the layer 2 protocol like hdlc or ppp is not configured or wrongly configured if the interface is serial interface.
The most likely cause is a failed radiator fan.
It is possible I suppose but not likely.
The relay sensor is likely defective
throw-out bearing going bad is my guess
The most likely reasons are the volume is turned down or the radio is not tuned to a station.
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