CCNA Practice Exam Test Sample – Question 131

Which command encrypts all plaintext passwords?

A. Router# service password-encryption
B. Router(config)# password-encryption
C. Router(config)# service password-encryption
D. Router# password-encryption

Correct Answer: C
Section: IP Routing Technologies

Explanation:
Command
The “service password-encryption” command allows you to encrypt all passwords on your router so they cannot be easily guessed from your running-config. This command uses a very weak encryption because the router has to be very quickly decode the passwords for its operation.
It is meant to prevent someone from looking over your shoulder and seeing the password, that is all. This is configured in global configuration mode.