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What does the command _R1(config)#service password-encryption do on a router R1?
It encrypts the vty password for each individual session.
It encrypts all login data flowing from hosts to the router.
It enforces the user to login with an encrypted password.
It encrypts vty, console and enable passwords so they are not shown in plain text.
To help for security and reduce password vulnerability, the command _service password-encryption encrypts passwords so that they cannot be displayed in plain text in a printed version or backup copy of the configuration file. The command influences how IOS saves current and future password for console, vty, enable and username/password.
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