RHCSA RHCSA Linux Essentials 5

Question 1

Which command searches for the string 'error' case-insensitively in all .log files under /var/log?

Accepted Answer

grep -ri 'error' /var/log/

Answer

`grep -r` recurses through directories and `-i` makes the search case-insensitive, covering all .log files.

Question 2

What does the `tar -xzf archive.tar.gz -C /opt/` command do?

Accepted Answer

Extracts archive.tar.gz into the /opt/ directory

Answer

The flags -x (extract), -z (gzip), -f (file) combined with -C specify the extraction destination directory.

Question 3

Which command sets a user account to expire on December 31, 2026?

Accepted Answer

Both B and C are correct

Answer

Both `usermod -e` and `chage -E` accept a YYYY-MM-DD date and set the account expiration date.

Question 4

A volume group `vg_data` has 10 GiB free. Which command creates a 4 GiB logical volume named `lv_logs`?

Accepted Answer

lvcreate -L 4G -n lv_logs vg_data

Answer

`lvcreate -L 4G -n lv_logs vg_data` creates a new 4 GiB logical volume named lv_logs in the specified volume group.

Question 5

Which configuration file defines the DNS search domain and nameservers for a RHEL system?

Accepted Answer

/etc/resolv.conf

Answer

/etc/resolv.conf contains the `nameserver` and `search` directives used by the resolver library.

RHCSA Exam Practice Test