Which of the following tasks can the command passwd accomplish? (Choose two.)

Changing a username is performed with the usermod -l command, not passwd; passwd has no option to modify a login name.

The primary function of passwd is to update a user's authentication token (password) stored in /etc/shadow, and any user can change their own password while root can change any user's password.

Creating new user accounts is the function of the useradd (or adduser) command, not passwd.

Creating new groups is the function of the groupadd command, not passwd.

passwd -l locks a user account by prepending an exclamation mark to the password hash in /etc/shadow, preventing password-based login without deleting the account.