Linux Professional Institute LPIC-1 (101-500) Simulator #4

A system administrator receives a notification about upcoming maintenance, and the server needs to be powered off in 10 minutes. Which command should they use to schedule the server shutdown?

While working remotely on a server, a system administrator realizes that there’s an issue with a newly deployed application, and the server needs to be restarted immediately. Which command should they use for an immediate reboot?

A system administrator needs to reboot a production server. Before doing so, they want to send an alert to all logged-in users, notifying them about the impending reboot. Which command should the administrator use to notify all users?

The system administrator needs to send a custom alert to all users notifying them of an upcoming maintenance window. However, they want the alert to persist on users’ terminals even after they acknowledge it. Which command achieves this?

You are an administrator of a Linux server. There’s a process with PID 12345 that seems to be stuck and not responding. You want to send a signal to the process to give it a chance to terminate gracefully, releasing its resources properly. Which command should you use?

You notice that a particular application named “appX” is not releasing memory even after its tasks are complete. To properly terminate all processes associated with “appX”, which command should you use?

On a Linux workstation, the power button was pressed, and the system initiated a proper shutdown sequence without any user intervention from the terminal. Which service most likely listened to the power button event and responded accordingly?

As a system administrator, you notice that your Linux laptop doesn’t respond to lid close events. You want to make sure that there’s a service running which listens to such ACPI events. Which command would you use to check if the appropriate daemon is active?

You have been assigned a task to change the default runlevel of a Linux server to multi-user mode with networking but without a GUI. Which entry would you modify in /etc/inittab to achieve this?

Your Linux system seems to be booting into an unexpected mode. You decide to check the /etc/inittab file to understand the default runlevel. Which line in the /etc/inittab file determines the default runlevel of the system?

A Linux server administrator wants to ensure that the SSH service does not start automatically on system boot. Which of the following commands should be used?

You are logged into a Linux server and want to shutdown the system after 30 minutes. Which of the following commands will achieve this?

Which of the following shutdown commands will broadcast a message to all logged-in users before shutting down the system in 10 minutes?

Your colleague left a note stating that the system needs to be switched to single-user mode using the init process for maintenance purposes. Which of the following commands will achieve this?

You have been instructed to check the default runlevel of a system without altering its state. Which of the following commands will allow you to view the default runlevel without making changes?

You want to manually start the ssh service on a server using scripts located in the /etc/init.d/ directory. Which command will correctly achieve this?

You are logged into a server and are required to transition the system into single-user mode for maintenance without shutting it down. Using the telinit command, which option would be appropriate to achieve this?

While on a conference call, a colleague instructs you to send the telinit command to the server to update the system’s runlevel to a multi-user mode without any graphical environment. Which command should you execute?

A new administrator is unfamiliar with systemd and asks how to view the current system’s default boot target. Which command would you advise them to use?

After making changes to the sshd.service unit file, you want to ensure the changes are loaded without restarting the system. Which systemctl command would you use to reload the unit configuration without restarting the service?

An administrator has recently made changes to a system’s boot options and wishes to generate a new GRUB 2 configuration file to reflect those changes. Which command will help generate this configuration and output it to /boot/grub/grub.cfg?

Jane is attempting to install a boot loader on a system with a traditional BIOS. She realizes she must place the boot loader in a specific location for the system to recognize and load it upon start-up. Where should the boot loader be placed for successful booting?

Michael is troubleshooting a system that doesn’t boot correctly. He suspects that the MBR might be corrupt. Which of the following tools can he use to install GRUB in the MBR?

Maria is debugging an application issue and suspects that a shared library might be the cause. Which of the following commands can she use to identify the shared libraries an executable is linked against?

Alex is interested in understanding the shared library dependencies of a binary named sampleApp. He decides to run a command that lists the dynamic dependencies of the binary. Which of the following commands should Alex use?

A system administrator is setting up a new Linux server. They need to ensure that certain system libraries are available for applications to run. Which of the following is the typical directory where system libraries reside in a Linux file system?

Jeremy is troubleshooting a server application that won’t start. He suspects it might be due to a missing shared library. Which command can Jeremy use to determine which shared libraries the application requires at runtime?

After downloading a binary called “applicationX” from the internet, Alice wants to ensure that it doesn’t load any unexpected or insecure libraries from a user’s home directory or temporary directories. Which command can Alice use to identify the libraries that “applicationX” is linked to?

Jennifer, a systems administrator, recently added a new directory /opt/libs containing shared libraries to her system. She needs to ensure that programs can locate and use the shared libraries in this directory. Which command should she use to update the system’s shared library cache?

Carlos, a junior system administrator, wants to specify additional directories for the system to search for shared libraries. In which file should he list the paths to these directories?

Maya is running a custom-built software that relies on a shared library located in /home/maya/custom_libs/. The software doesn’t run, complaining about missing shared libraries. Which environment variable can Maya temporarily set to ensure her software looks into the /home/maya/custom_libs/ directory for the required shared libraries?

Lucia wants to install a Debian binary package named “fantastic-app.deb” that she has downloaded from a trusted source. Which command should she use to install this package on her Debian-based system?

You have a large log file named server.log which is 10GB in size. For ease of analysis, you need to split this file into smaller chunks, each 1GB in size. Which command will help you achieve this?

You are troubleshooting a server application by examining its log file named app.log. You want to continuously monitor any new entries added to this file. Which of the following commands should you use to achieve this?

You are given a file named data.txt that contains a series of phone numbers. However, instead of hyphens, the numbers are separated by underscores (e.g., 123_456_7890). You want to replace all underscores with hyphens in this file. Which of the following commands will achieve this?

A colleague sends you a large log file named server.log. You are asked to determine the total number of lines in this file. Which command should you use to accomplish this?

You have received a large log file named logs.xz that has been compressed using the XZ compression algorithm. You wish to quickly view the contents of this file without decompressing it. Which command can be used to achieve this?

Mike is working on a system that has limited disk space. He has a compressed archive named backup.gz and needs to view its contents without actually decompressing the file on disk. Which of the following commands can Mike use to achieve this?

Sarah wants to copy all contents, including files and sub-directories, from the directory data_2023 to a new directory backup_2023. Which command would be the most effective way to achieve this?

David has a directory named projects containing multiple sub-directories and files. He wishes to make an identical backup of the projects directory inside a directory named backup. Which of the following commands will allow him to achieve this?

Maria wants to clear up some space on her computer and has decided to remove a directory named old_reports which contains multiple files, sub-directories, and hidden items. Which command should she use to ensure complete removal?

Emily wants to list all files in the current directory that have a .txt extension and begin with either “report” or “summary”. Which command should she use?

Alex is setting up a Linux server with systemd. He learns that aside from the traditional /etc/fstab, systemd offers another mechanism to manage mount points. Which type of unit file should he be aware of to handle mounts with systemd?

Carlos, a system administrator, noticed that there is a high I/O activity on an NFS share mounted at /mnt/nfs_share. Before troubleshooting, he needs to ensure no users are accessing the share. What command should Carlos use to safely unmount the share?

Angela, a systems administrator, wants to temporarily mount an NFS share located at 192.168.0.12:/shared_data to the local directory /mnt/data. Which command should she use to accomplish this?

Maria, a systems administrator, inserts a USB flash drive into a Linux server. She wants to access the contents of the drive. By default, where will modern Linux desktop environments typically auto-mount the device?

John, a system administrator, wants to ensure that a filesystem is checked for errors during the boot process. In the /etc/fstab file, which field should he adjust to set the order in which the filesystem checks are conducted?

Jenny is setting up her system’s /etc/fstab file. To ensure the integrity of her system during boot-up, she wishes to use the UUID of her /dev/sda1 partition instead of its device name. Which command should Jenny use to find the UUID of the /dev/sda1 partition?

Alex is a system administrator and needs to list all block devices on his server in a tree-like format, showcasing their relationships, but he doesn’t want to see any partition information. Which command should Alex use?

You are a system administrator, and a user named David reports that he can’t execute a script named “runme.sh” located in his home directory. You check the permissions of the file and it shows “-rw-r–r–“. Which command will correctly give execute permissions to the owner of the file?