RHCSA RHCSA Linux Essentials 2

Question 1

Which command displays the current SELinux enforcement mode?

Accepted Answer

getenforce

Answer

The `getenforce` command prints the current SELinux mode: Enforcing, Permissive, or Disabled.

Question 2

What does the `umask 027` setting mean for newly created files?

Accepted Answer

Files get permissions 640

Answer

Default file permissions are 666; subtracting umask 027 gives 666-027=640 (rw-r-----) for new files.

Question 3

Which systemd target is equivalent to the traditional SysV runlevel 3?

Accepted Answer

multi-user.target

Answer

multi-user.target is the systemd equivalent of runlevel 3 (multi-user, non-graphical).

Question 4

A user needs to edit /etc/sudoers safely. Which command should they use?

Accepted Answer

visudo

Answer

`visudo` locks the file and validates syntax before saving, preventing a broken sudoers file.

Question 5

Which command permanently sets the hostname to 'server1.example.com'?

Accepted Answer

hostnamectl set-hostname server1.example.com

Answer

`hostnamectl set-hostname` updates the hostname immediately and persists it across reboots.

RHCSA Exam Practice Test