LPIC-1 Practice Test 8 — 10 Questions

Question 1

A zombie process appears in the process list. The parent process has PID 1234. Which command will most likely remove the zombie?

Accepted Answer

kill -9 1234. A zombie process is a child process that has terminated but whose exit status has not been read by its parent. The zombie cannot be killed directly because it is already dead; it only remains in the process table until the parent calls wait(). Sending SIGKILL (kill -9) to the parent process (PID 1234) causes the parent to terminate, and the zombie child is then adopted by init (PID 1), which automatically reaps it by calling wait().

Answer

kill -9 <zombie_pid>

Answer

wait <zombie_pid>

Answer

reboot

Question 2

Which THREE of the following directories are defined in the Filesystem Hierarchy Standard (FHS) and are expected to exist on a typical Linux system?

Accepted Answer

/run. B is correct because /run is a tmpfs directory defined in FHS 3.0+ that stores volatile runtime data (e.g., PID files, Unix sockets) since boot. It replaced /var/run to ensure early-boot processes have a writable location before /var is mounted.

Answer

/net

Answer

/opt

Question 3

An administrator needs to mount a USB drive with the ext4 filesystem automatically at boot. The drive has a filesystem label 'DATA'. Which entry in /etc/fstab will mount it at /mnt/data with noatime and default mount options?

Accepted Answer

LABEL=DATA /mnt/data ext4 noatime,defaults 0 0. It uses the filesystem label 'DATA' to identify the USB drive, which is more reliable than a device name like /dev/sdb1 that can change between boots. The mount options 'noatime,defaults' are specified in the correct order, with 'defaults' providing standard mount options (rw, suid, dev, exec, auto, nouser, async) and 'noatime' disabling access time updates to reduce writes. The entry also includes the proper ext4 filesystem type and the mount point /mnt/data.

Answer

/dev/sdb1 /mnt/data ext4 noatime,defaults 0 0

Answer

LABEL=DATA /mnt/data ext4 defaults 0 0

Answer

UUID=DATA /mnt/data ext4 noatime,defaults 0 0

Question 4

A user reports that a file cannot be saved due to 'No space left on device'. Which command should the administrator use to verify disk usage?

Accepted Answer

df -h. The 'df -h' command displays disk space usage in human-readable format (e.g., GB, MB) for all mounted filesystems. When a user encounters 'No space left on device', the most direct verification is to check available disk space with 'df -h', which shows used and available blocks. Option D is correct because it specifically addresses the space shortage indicated by the error.

Answer

du -sh /

Answer

fdisk -l

Answer

df -i

Question 5

A system administrator needs to install a local Debian package file named 'myapp.deb'. Which command should be used?

Accepted Answer

dpkg -i myapp.deb. The correct command to install a local Debian package file is `dpkg -i myapp.deb`. The `dpkg` tool is the low-level package manager for Debian-based systems that directly handles `.deb` files, and the `-i` flag triggers installation. Unlike `apt-get` or `aptitude`, `dpkg` does not resolve dependencies automatically, but it is the proper tool for installing a standalone `.deb` file from disk.

Answer

rpm -ivh myapp.deb

Answer

aptitude install myapp.deb

Answer

apt-get install myapp.deb

Question 6

Refer to the exhibit. An admin attempts to execute a shell script located in /tmp but gets 'Permission denied'. Which mount option is most likely causing this?

Accepted Answer

noexec. The 'noexec' mount option prevents execution of any binary or script directly from the filesystem, regardless of file permissions. Since the script is in /tmp and the admin gets 'Permission denied' despite correct execute bits, the /tmp partition is likely mounted with noexec, which is a common security hardening practice.

Answer

relatime

Answer

nodev

Answer

nosuid

Question 7

Which TWO of the following are valid methods to run a shell script named 'script.sh' using the bash shell, assuming the script has execute permission? (Choose two.)

Accepted Answer

./script.sh. './script.sh' explicitly invokes the script using the current shell's shebang interpreter (e.g., #!/bin/bash) and requires execute permission. Option E is correct because 'bash script.sh' runs the script as an argument to the bash interpreter, which reads and executes the file line by line, also requiring execute permission.

Answer

sh script.sh

Answer

script.sh (if in PATH)

Answer

source script.sh

Question 8

Which command lists all installed packages on a Debian-based system by querying the dpkg database?

Accepted Answer

dpkg --get-selections. `dpkg --get-selections` queries the dpkg database directly and outputs a list of all installed packages along with their installation state (e.g., 'install'). This command does not rely on remote repositories or cache files, making it a reliable method for listing installed packages on a Debian-based system.

Answer

apt-cache search .

Answer

dpkg -L

Answer

apt-show-versions

Question 9

The /proc filesystem is described as a virtual filesystem. Which statement best describes its purpose?

Accepted Answer

It provides an interface to kernel data structures and processes.. The /proc filesystem is a virtual filesystem that does not contain actual files on disk but instead provides a runtime interface to kernel data structures, including process information, system memory, CPU details, and hardware configuration. This allows users and system tools (like ps, top, and free) to read kernel state in real time without needing direct kernel memory access.

Answer

It contains configuration files for system services.

Answer

It holds binary executables for system administration.

Answer

It stores temporary files that survive reboots.

Question 10

A system administrator installs a new RPM package, but it fails due to a missing library dependency. Which command can best identify the specific dependency that is missing?

Accepted Answer

rpm -qpR. The correct command is `rpm -qpR`. The `-q` flag queries the RPM database, `-p` specifies a package file (not an installed package), and `-R` lists all capabilities (including shared libraries) that the package requires. This directly shows the missing dependency by name, such as `libfoo.so.1`. The other options either list installed packages, query files within a package, or use a higher-level tool that may not pinpoint the exact missing library.

Answer

yum deplist

Answer

rpm -qlp

Answer

rpm -qa