Which of the following can be concluded as the cause of an interface having a status of admin down/down?
A) There is a speed mismatch between the router and switch.
B) The router interface has been configured with the shutdown interface subcommand.
C) The neighboring switch port uses port security.
D) The router has no cable installed.
B
Explanation: B) Many situations can result in a down/down state, but an admin down/down state is the result of the shutdown command.
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Fill in the blank(s) with correct word
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