A network engineer needs to prevent plaintext passwords from being displayed in the configuration file of a Cisco router. Which command should be applied to achieve this?
enable secret cisco
service password-encryption
password encryption aes
username admin secret cisco
The service password-encryption command encrypts all plaintext passwords in the configuration file using a Cisco proprietary encryption algorithm. This helps in protecting the passwords from being easily read if someone views the configuration file. The enable secret command sets an encrypted password for privileged access but does not encrypt other plaintext passwords in the configuration. The username admin secret cisco command creates an encrypted password for a specific user but doesn't affect existing plaintext passwords. The password encryption aes command is not a valid Cisco IOS command for encrypting passwords.
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