LPIC-1 Practice Test 8 — 10 Questions

Question 1

A Linux administrator is troubleshooting a package dependency issue. When attempting to install package 'foo', the package manager reports a missing dependency 'libbar.so.2'. Which of the following is the most appropriate next step?

Accepted Answer

Use 'apt-file search libbar.so.2' or 'dnf provides libbar.so.2' to find the package that contains the file. The error indicates that the file 'libbar.so.2' is missing from the system. The most appropriate next step is to identify which package provides this file, so that it can be installed to satisfy the dependency. On Debian-based systems, 'apt-file search' queries the package repository metadata to find the package containing a specific file; on Red Hat-based systems, 'dnf provides' performs the same function. This targeted search is the correct first troubleshooting step before any installation or library cache update.

Answer

Run 'ldconfig' to update the library cache

Answer

Reinstall the 'foo' package using 'rpm -i --force foo.rpm'

Answer

Run 'rpm -q --whatrequires libbar.so.2'

Question 2

A company maintains a private Debian repository for internal packages. A new package 'internal-tool' version 2.0 has been added to the repository, but when users run 'apt-get update && apt-get install internal-tool', the old version 1.0 is still being offered. What is the most likely cause?

Accepted Answer

The repository's Release file has not been regenerated after adding the new package. The most likely cause is that the repository's Release file has not been regenerated after adding the new package. APT relies on the Release file (and its associated InRelease or Release.gpg) to obtain the current package metadata, including version information. If the Release file is not updated to reflect the new package version 2.0, APT will still see the old metadata and offer version 1.0, even though the package file exists in the repository.

Answer

The package version number is not higher than the installed version

Answer

The local apt cache needs to be cleared with 'apt-get clean'

Answer

The 'apt-get update' command did not run successfully due to network issues

Question 3

A system administrator wants to compile and install a program from source. After running './configure --prefix=/opt/myapp', the configure script fails with an error about missing 'libssl-dev'. What should the administrator do to resolve this issue?

Accepted Answer

Install the 'libssl-dev' package using the package manager. The configure script requires the development headers and static libraries for OpenSSL to compile software that uses SSL/TLS. The 'libssl-dev' package provides these headers and the .so symlinks needed during compilation. Installing it via the package manager (e.g., apt, yum) is the correct and standard method to satisfy this build dependency.

Answer

Manually download and place the missing header files in /usr/include

Answer

Install the 'libssl' runtime library

Answer

Add the '--disable-ssl' flag to ./configure

Question 4

An administrator wants to enforce a password history that prevents using the last 5 passwords. Which directive should be added to /etc/pam.d/system-auth?

Accepted Answer

password required pam_pwhistory.so remember=5. Option C is correct because the `required` control flag ensures that the `pam_pwhistory.so` module must succeed for the password change to proceed, and `remember=5` enforces that the last 5 passwords cannot be reused. This is the standard way to enforce password history in PAM (Pluggable Authentication Modules) on Linux systems.

Answer

password optional pam_pwhistory.so remember=5

Answer

password sufficient pam_pwhistory.so remember=5

Answer

password requisite pam_pwhistory.so remember=5

Question 5

Which command creates an ext4 filesystem on /dev/sdb1 without interactive prompts?

Accepted Answer

mkfs.ext4 /dev/sdb1. Option D is correct because `mkfs.ext4` is a direct frontend to `mke2fs` that creates an ext4 filesystem without interactive prompts. It automatically formats the partition with ext4 defaults, requiring no user confirmation, making it suitable for scripting.

Answer

mkfs -t ext4 /dev/sdb1

Answer

mke2fs -t ext4 /dev/sdb1

Answer

mkfs.ext2 /dev/sdb1

Question 6

Which THREE signals are commonly used to terminate a process with the kill command?

Accepted Answer

SIGKILL. SIGKILL (signal 9) is one of the three signals commonly used to terminate a process with the kill command because it forcefully kills the process without allowing it to clean up or ignore the signal. SIGTERM (signal 15) is the default signal sent by kill, requesting graceful termination. SIGHUP (signal 1) is traditionally used to hang up a terminal line but is also commonly used to reload configuration files or terminate processes in daemon management.

Answer

SIGSTOP

Answer

SIGINT

Question 7

A Linux system has a software RAID1 array /dev/md0 consisting of /dev/sda1 and /dev/sdb1. After replacing a failed disk, the administrator runs 'mdadm --manage /dev/md0 --add /dev/sdc1', but the array remains degraded. Which command should be used to check the status of the array?

Accepted Answer

mdadm --detail /dev/md0. The `mdadm --detail /dev/md0` command displays the current state of the RAID array, including its status (e.g., degraded, active), the number of active and failed devices, and the sync/resync progress. Since the array remains degraded after adding a new disk, this command will show whether the new disk has been properly integrated or if there is an underlying issue, such as a missing or failed component.

Answer

mdadm --examine /dev/sdc1

Answer

mdadm --version

Answer

mdadm --query /dev/md0

Question 8

A system administrator wants to mount a USB flash drive formatted with the ext4 filesystem. The device is detected as /dev/sdc1. Which command should be used to mount the device to /mnt/usb?

Accepted Answer

mount /dev/sdc1 /mnt/usb. Option C is correct because the standard syntax for the mount command is `mount [options] `. Here, `/dev/sdc1` is the device and `/mnt/usb` is the target directory. The ext4 filesystem is auto-detected by the kernel, so specifying `-t ext4` is optional but not incorrect.

Answer

mount -a /dev/sdc1 /mnt/usb

Answer

mount /mnt/usb /dev/sdc1

Answer

mount -t ext4 /dev/sdc1 /mnt/usb

Question 9

An administrator needs to mount an ISO image file /tmp/image.iso to the directory /mnt/iso. Which command should be used?

Accepted Answer

mount -o loop /tmp/image.iso /mnt/iso. Option A is correct because the `-o loop` option tells the mount command to use a loop device, which is required to mount a file (like an ISO image) as if it were a block device. Without the loop option, mount expects a block device path, not a regular file.

Answer

mount -o ro /tmp/image.iso /mnt/iso

Answer

mount -t iso /tmp/image.iso /mnt/iso

Answer

mount /tmp/image.iso /mnt/iso

Question 10

A system is running out of disk space on /var. The administrator finds that /var/log/syslog is 4GB. Which of the following is the best course of action to prevent future issues while keeping recent logs?

Accepted Answer

Configure logrotate to rotate and compress logs daily.. Option B is correct because logrotate is the standard Linux utility for managing log file growth. By configuring it to rotate and compress logs daily, the administrator can automatically archive old logs (e.g., /var/log/syslog.1.gz) and keep only recent entries in the active file, preventing disk space exhaustion without losing historical data.

Answer

Use 'truncate -s 0 /var/log/syslog' to empty the file.

Answer

Configure syslog to stop logging.

Answer

Delete /var/log/syslog and create an empty file.