RHCSA RHCSA EX200 5

Question 1

Which command adds a swap partition at /dev/sdb2 and activates it immediately without a reboot?

Accepted Answer

mkswap /dev/sdb2 && swapon /dev/sdb2

Answer

mkswap formats the partition as swap space, and swapon activates it immediately for use by the kernel.

Question 2

Which configuration file defines system-wide resource limits (e.g., max open files) for PAM-authenticated sessions?

Accepted Answer

/etc/security/limits.conf

Answer

/etc/security/limits.conf sets per-user and per-group limits enforced by the pam_limits module at login.

Question 3

You need to redirect all port 80 traffic to port 8080 on the local machine using firewalld. Which command does this?

Accepted Answer

firewall-cmd --add-forward-port=port=80:proto=tcp:toport=8080 --permanent

Answer

The --add-forward-port option in firewalld handles local port redirection; --permanent makes it survive reboots.

Question 4

Which command lists all active and inactive systemd unit files along with their enabled/disabled state?

Accepted Answer

systemctl list-unit-files

Answer

'systemctl list-unit-files' shows all installed unit files and whether they are enabled, disabled, or static.

Question 5

When configuring autofs to automount an NFS share, which file defines the mount point directory and points to the map file?

Accepted Answer

/etc/auto.master

Answer

/etc/auto.master (or /etc/auto.master.d/) is the master map that links mount point directories to their indirect or direct map files.

RHCSA Exam Practice Test