LPIC-1 Practice Test 2 — 10 Questions

Question 1

Refer to the exhibit. What is the current default target?

Accepted Answer

multi-user.target. The current default target is multi-user.target because the output of the `systemctl get-default` command shows 'multi-user.target'. This target provides a non-graphical, multi-user console environment without a display manager, which is the standard default on many server-oriented Linux distributions.

Answer

emergency.target

Answer

rescue.target

Answer

graphical.target

Question 2

A system administrator needs to install the latest version of a package named 'webapp' from a third-party repository that has been added to the system. Which command should be used to update the package list and install the package in one step?

Accepted Answer

apt-get update && apt-get install webapp. It first runs `apt-get update` to refresh the local package index from all configured repositories (including the third-party one), then uses `&&` to conditionally execute `apt-get install webapp` only if the update succeeds. This ensures the latest version available from the third-party repository is fetched and installed in a single command sequence.

Answer

apt-get upgrade webapp

Answer

dpkg -i webapp.deb

Answer

apt-cache search webapp && apt-get install webapp

Question 3

A system administrator needs to locate the largest directories under /var to free up disk space. Which command is most appropriate?

Accepted Answer

du -sk /var/* | sort -rn. `du -sk /var/* | sort -rn` calculates the disk usage in kilobytes for each top-level item under /var, then sorts them numerically in reverse order, showing the largest directories first. This directly addresses the need to locate the largest directories to free up space, as `du` reports actual disk usage (including subdirectories) rather than file sizes.

Answer

df -h /var

Answer

find /var -size +100M

Answer

ls -lS /var

Question 4

Which TWO tools can be used to query DNS records? (Choose two.)

Accepted Answer

nslookup. A is correct because nslookup is a classic DNS query tool that sends DNS queries to name servers to resolve domain names to IP addresses or vice versa. It directly queries DNS records (A, AAAA, MX, CNAME, etc.) using the DNS protocol (UDP/TCP port 53).

Answer

ss

Answer

ping

Answer

traceroute

Question 5

The system administrator wants to add a new swap partition on /dev/sdb2. After creating the partition, which command should be used to initialize it as swap?

Accepted Answer

mkswap /dev/sdb2. The `mkswap` command is specifically designed to initialize a partition or file as a swap area by writing a swap signature (UUID and swap superblock) to the device. After creating the partition, you must run `mkswap /dev/sdb2` to set it up for use as swap before activating it with `swapon`.

Answer

mkfs.ext4 /dev/sdb2

Answer

fsck /dev/sdb2

Answer

swapon /dev/sdb2

Question 6

During system startup, GRUB 2 displays a prompt. Which command should be typed at the GRUB prompt to boot the currently selected entry normally?

Accepted Answer

boot. At the GRUB 2 prompt, the 'boot' command instructs GRUB to load the operating system using the currently configured kernel, initrd, and root device settings. This is the standard way to proceed with normal booting after any manual adjustments or when the menu is not displayed. Without 'boot', GRUB remains at the prompt and does not transfer control to the kernel.

Answer

normal

Answer

linux

Answer

initrd

Question 7

A user reports that a cron job is not executing. The cron job is defined in /etc/crontab. The administrator checks the system logs and finds no errors. Which command should the administrator use to verify that the cron daemon is running?

Accepted Answer

pgrep cron. `pgrep cron` searches the process table for processes named 'cron' and returns the PID(s) if running. This is a quick, reliable way to verify the cron daemon is active without parsing full process lists or relying on systemd-specific commands.

Answer

systemctl status cron

Answer

crontab -l

Answer

ps aux | grep cron

Question 8

Which sed command will replace the first occurrence of 'foo' with 'bar' on each line of a file?

Accepted Answer

sed 's/foo/bar/' file. The default behavior of the `s` (substitute) command in sed is to replace only the first occurrence of the pattern on each line. Without a numeric flag, `sed 's/foo/bar/' file` replaces the first 'foo' on each line with 'bar'. The `g` flag would replace all occurrences, not just the first.

Answer

sed 's/foo/bar/g' file

Answer

sed 's/foo/bar/0' file

Answer

sed 's/foo/bar/2' file

Question 9

Which two commands can be used to send a test email from the command line to verify SMTP functionality? (Choose two.)

Accepted Answer

mail -s test user@example.com. The `mail` command (option C) sends an email via the local MTA, directly testing SMTP delivery. The `sendmail` command (option D) with a piped message also invokes the MTA to deliver the email, verifying SMTP functionality. Both commands rely on the system's configured MTA to handle SMTP communication.

Answer

telnet localhost 25

Answer

mutt -s test user@example.com

Answer

sendmail -bv user@example.com

Question 10

A Linux administrator is managing a server that uses RPM-based package management. They need to find which installed package provides the '/etc/ssh/sshd_config' file. Which command should they use?

Accepted Answer

rpm -qf /etc/ssh/sshd_config. The correct command is `rpm -qf /etc/ssh/sshd_config`. The `-q` flag queries the RPM database, and `-f` (or `--file`) tells RPM to find which installed package owns the specified file. This is the standard way to map a file back to its originating package in RPM-based systems.

Answer

rpm -qi /etc/ssh/sshd_config

Answer

rpm -ql /etc/ssh/sshd_config

Answer

rpm -qa | grep sshd_config