See the solution below in Explanation.
Explanation:
Solution:
tar -zvcf /root/etc_backup.tar.gz /etc
file /root/etc_backup.tar.gz
Detailed Explanation:
* tar creates the archive.
* -z uses gzip compression.
* -v is verbose.
* -c creates the archive.
* -f names the output file.
* file confirms the resulting archive type.

See the solution below in Explanation.
Explanation:
Solution:
echo "umask 0277" > > /home/natasha/.bash_profile
Detailed Explanation:
* A umask of 0277 removes group and other permissions entirely.
* New files: base 666 minus mask 277 gives 400.
* New directories: base 777 minus mask 277 gives 500.
* Putting it in .bash_profile applies it for that user's login shell.

See the solution below in Explanation.
Explanation:
Solution:
* Create the swap partition:
fdisk /dev/sdb
partprobe /dev/sdb
* Format it for swap:
mkswap /dev/sdb2
* Enable it:
swapon /dev/sdb2
* Persist it in /etc/fstab:
echo "/dev/sdb2 swap swap defaults 0 0" > > /etc/fstab
* Verify:
swapon --show
Detailed Explanation:
* mkswap prepares the partition as swap space.
* swapon activates it immediately.
* Adding an /etc/fstab entry ensures it survives reboot.
* The lab uses a partition-based swap workflow.

See the solution below in Explanation.
Explanation:
Solution:
systemctl set-default multi-user.target
systemctl get-default
Detailed Explanation:
* set-default changes the boot target persistently.
* get-default verifies the result.
* multi-user.target is the standard non-graphical multi-user boot target.

See the solution below in Explanation.
Explanation:
Solution:
dnf install -y dnf-automatic
systemctl enable --now dnf-automatic.timer
systemctl list-timers --all | grep dnf
Detailed Explanation:
* dnf-automatic provides automated update checking and installation features.
* The timer unit schedules the checks.
* RHEL 10 DNF documentation specifically documents the dnf-automatic timer units. ( Red Hat Documentation )