Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

A system administrator is hardening a new Linux server and is auditing the default file permissions. They notice that while /etc/passwd is readable by all users, the /etc/shadow file is restricted to root access only. What is the primary purpose of the /etc/shadow file in a modern Linux system?

  • To define the primary and supplementary group memberships for each user on the system.

  • To store system-wide environment variables and startup scripts that are executed for all users upon login.

  • To serve as a template for new user home directories, containing default profile and configuration files.

  • To store sensitive user information, including hashed passwords and password expiration data, protecting it from non-privileged users.

CompTIA Linux+ XK0-006 (V8)
Services and User Management
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