LPIC-1 Practice Test 6 — 10 Questions

Question 1

A senior administrator runs a script that processes a CSV file. The script contains the following snippet: 'for field in $(cat data.csv); do ...'. The data.csv file contains lines like: 'John Doe, 123 Main St, Springfield'. The script fails to process correctly, splitting fields incorrectly and causing errors. Which of the following is the most appropriate fix?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Use a while loop with read: 'while IFS= read -r line; do ... done < data.csv'. The script fails due to word splitting and globbing when iterating over the output of `cat data.csv` with a `for` loop. Using `while IFS= read -r line` reads each line verbatim, preserving spaces and commas, and is the standard pattern for processing CSV or delimited files line by line in bash.

Answer

Use xargs to process each line

Answer

Use 'for field in $(<data.csv)' with proper quoting

Answer

Use 'for field in "$(cat data.csv)"' with double quotes around the substitution

Question 2

Refer to the exhibit. A user tries to execute a script on a mounted filesystem but gets a permission denied error. The script has execute permissions. What is the most likely cause?

Accepted Answer

The filesystem is mounted with the 'noexec' option.. The 'noexec' mount option prevents execution of any binary or script on the filesystem, regardless of file permissions. Even if the script has execute permissions set, the kernel will refuse to execute it when the filesystem is mounted with 'noexec'. This is a common security measure on filesystems like /tmp or /home to prevent unauthorized code execution.

Answer

The script is not executable for the user.

Answer

The user does not have read permission on the script.

Answer

The filesystem is full.

Question 3

Refer to the exhibit. Why does the cron job fail?

Accepted Answer

The script is not executable.. C is correct because cron jobs require the script to be executable (i.e., have the execute permission bit set). If the script is not executable, cron will fail to run it even if the shebang line and PATH are correct. The error typically appears in the cron log or as a silent failure.

Answer

The cron job lacks the PATH environment variable.

Answer

The script is owned by root, but the cron job runs as a different user.

Answer

The script lacks a shebang line.

Question 4

Refer to the exhibit. The system administrator notices the /var/log partition is nearly full. The syslog file is 2GB. Which command will safely reduce the size of this log file without stopping the logging daemon?

Accepted Answer

> /var/log/syslog. Using the shell redirection operator `> /var/log/syslog` truncates the file to zero length without deleting or closing its file descriptor. The syslog daemon (rsyslogd or syslogd) continues writing to the same inode, so no service interruption occurs. This is the safest method to free disk space while maintaining continuous logging.

Answer

cp /dev/null /var/log/syslog

Answer

rm /var/log/syslog && touch /var/log/syslog

Answer

mv /var/log/syslog /var/log/syslog.old

Question 5

Which THREE of the following are correct features of the 'grep' command? (Choose three.)

Accepted Answer

-i makes the search case-insensitive. The `-i` flag in `grep` performs case-insensitive matching, so patterns like 'error' will match 'Error', 'ERROR', etc. This is a common requirement when searching log files where case may vary.

Answer

-l prints line numbers of matches

Answer

-r enables regular expression matching

Question 6

Which command is used to compress a file with the highest compression ratio?

Accepted Answer

xz -9. `xz -9` uses the LZMA2 compression algorithm, which typically achieves a higher compression ratio than gzip (DEFLATE) or bzip2 (Burrows-Wheeler transform) at the cost of slower speed and higher memory usage. The `-9` flag sets the highest compression level, maximizing the ratio.

Answer

gzip -9

Answer

bzip2 -9

Answer

compress

Question 7

Which three options are valid ways to install a package 'curl' on a RHEL 8 system? (Choose three.)

Accepted Answer

`dnf install curl`. `dnf` is the default package manager on RHEL 8, replacing `yum` for handling RPM packages with automatic dependency resolution. It directly installs the `curl` package from configured repositories.

Answer

`apt-get install curl`

Answer

`zypper install curl`

Question 8

Which TWO commands are used to install packages on a Debian-based system? (Choose two.)

Accepted Answer

apt-get install. B is correct because `apt-get install` is the standard command-line tool for installing packages from Debian repositories, handling dependencies automatically. C is correct because `dpkg -i` installs a local `.deb` package file directly, though it does not resolve dependencies.

Answer

pacman -S

Answer

rpm -i

Answer

yum install

Question 9

A Linux administrator wants to update the local package index from all configured repositories on an Ubuntu system. Which command accomplishes this?

Accepted Answer

apt update. The `apt update` command (equivalent to `apt-get update`) refreshes the local package index by downloading the latest package lists from all repositories defined in `/etc/apt/sources.list` and `/etc/apt/sources.list.d/`. This is the prerequisite step before any installation or upgrade, ensuring the system knows about the newest available versions and dependencies.

Answer

dpkg --configure -a

Answer

apt upgrade

Answer

apt-get install

Question 10

An administrator needs to mount an ISO file located at /tmp/data.iso to /mnt/iso for read-only access. Which command should be used?

Accepted Answer

mount -o loop,ro /tmp/data.iso /mnt/iso. It uses the `-o loop,ro` options to mount the ISO file as a loop device with read-only access. The `loop` option is required to mount a file as a block device, and `ro` ensures the filesystem is mounted read-only, which is appropriate for an ISO image (typically an iso9660 filesystem).

Answer

mount /tmp/data.iso /mnt/iso

Answer

mount -t iso9660 -o loop /tmp/data.iso /mnt/iso

Answer

mount -o ro,loop /mnt/iso /tmp/data.iso