Which recommended security practice prevents attackers from performing password recovery on a Cisco IOS router for the purpose of gaining access to the privileged EXEC mode?

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Which recommended security practice prevents attackers from performing password recovery on a Cisco IOS router for the purpose of gaining access to the privileged EXEC mode?

Locate the router in a secure locked room that is accessible only to authorized personnel.
Configure secure administrative control to ensure that only authorized personnel can access the router.
Keep a secure copy of the router Cisco IOS image and router configuration file as a backup.
Provision the router with the maximum amount of memory possible.
Disable all unused ports and interfaces to reduce the number of ways that the router can be accessed.

Explanation: Of the three areas of router security, physical security, router hardening, and operating system security, physical security involves locating the router in a secure room accessible only to authorized personnel who can perform password recovery.

Which recommended security practice prevents attackers from performing password recovery on a Cisco IOS router for the purpose of gaining access to the privileged EXEC mode?

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