Linux Professional Institute LPIC-2 (201-450) Simulator #1

A Linux administrator wants to measure the average CPU usage of a system over a 5-minute span. Which of the following commands would achieve this?

An administrator is tasked with monitoring the memory usage of a Linux server to ensure it’s not running low on available memory. Which command would provide a detailed view of the system’s memory usage, including buffers and cache?

A system administrator has been noticing sluggish performance on a server and suspects it might be due to disk I/O issues. Which command would allow the administrator to monitor the I/O operations and transfer rates of all block devices in real-time?

A system administrator wants to monitor the amount of data being sent and received on the system’s network interfaces in real-time. Which command would provide this information with regular updates every 2 seconds?

An organization is rolling out a new firewall configuration to handle increased network traffic. To ensure the firewall can handle the anticipated throughput, the network administrator needs a tool to measure the firewall’s performance. Which command can be utilized to measure the packet forwarding rate of the firewall?

The network team has been asked to generate a report detailing the bandwidth usage of each client device over the past month. Which tool can be used to log and create visual graphics of network traffic data over extended periods?

An administrator notices that a Linux server has been experiencing unexpected reboots once every week. The server does not have any job scheduled for a reboot, and the temperatures are within the expected range. Which of the following is a likely reason for the system’s behavior?

A system administrator is tasked with diagnosing a server that’s experiencing slowdowns during peak times. While monitoring with top, the administrator notices that CPU and memory usage are within nominal ranges, but there’s consistently high I/O wait time. The administrator decides to inspect disk I/O performance next. Which of the following tools would be the most appropriate to determine disk I/O bottlenecks?

A systems administrator suspects that a server might be experiencing disk I/O issues. They decide to use iostat to collect statistics every 5 seconds for a total of 3 times. Which of the following commands accomplishes this?

An administrator wants to monitor the real-time I/O usage of processes and threads on a system. Which tool will allow them to see the I/O activity of individual processes and threads in real time?

An intern at a software development company wants to understand the changes made in the Kernel version 4.x from its predecessor 3.x. Which of the following documentation sources is the MOST appropriate place for them to find detailed information about the specific changes and updates?

Samantha is a Linux administrator tasked with developing a training module on Kernel 3.x for her team. She wants to ensure her team understands kernel internals and its various subsystems for this version. Where should she primarily source her technical information?

Robert, a new Linux administrator, has been told to review the source code of the Linux kernel currently in use on a server. He logs into the server but isn’t sure where to locate the source code. Which directory is the STANDARD location for Linux kernel source code?

Emily is tasked with patching the Linux kernel on one of the servers. Before applying the patch, she wants to ensure she’s working within the kernel source directory. Which directory is TYPICALLY used for storing and working on the Linux kernel source code?

Linda, an experienced Linux administrator, wants to guide her junior colleague, Ben, to better understand some specific kernel components. To achieve this, she recommends referring to the documentation provided within the kernel source directory. Where can Ben typically find the detailed documentation related to kernel components?

Mark is troubleshooting a kernel module and needs specific details about its functionality. His colleague recommends checking the kernel’s built-in documentation. Which directory should Mark navigate to, in order to find detailed information about kernel modules?

Jeremy is compiling a new kernel for an old embedded system. Due to the system’s constraints, he needs a compressed kernel image. Which of the following kernel image types is compressed and suitable for systems with memory limitations?

Alice is assisting her colleague in booting an old system with limited RAM. They are unsure about the kernel image type they should use. Alice suggests a specific kernel image type that can decompress itself directly into high memory without needing any memory below the 1 MB mark. Which kernel image did Alice most likely suggest?

John, a system administrator, is working with a modern computer system that has ample RAM and needs to choose the right kernel image type. He remembers that there’s a format suited for systems that require the kernel image to be larger than 512KB. Which kernel image format should John choose?

Lisa is examining the kernel compilation process and stumbles upon a kernel image that’s named “big zImage.” She realizes that this term refers to a specific kernel image format. Which of the following describes this format?

Sofia needs to create a systemd timer that runs a backup service every day at 3 AM. To which directory should she add the timer unit file for her backup service?

Julia is reviewing a legacy server that uses SysV init for its startup process. She notices that one of the services does not start automatically during the boot process. Which directory should Julia check to ensure the service has the correct symbolic links for the desired runlevels?

Liam is checking init scripts on a Linux system. He comes across a script with a header containing details like Provides, Required-Start, and Default-Start. These details are likely in adherence to which specification?

During an audit of a Linux system’s startup configuration, Jessica notices that certain systemd service files are located in the /usr/lib/systemd/ directory. What is the primary purpose of this directory with respect to systemd?

Mike, a Linux system administrator, needs to modify the configuration of a systemd service named customapp.service. He wishes to ensure that his modifications persist across package updates. In which directory should he look to create or modify the override files for customapp.service?

While troubleshooting a service on a Linux server, Alice noticed that the systemd service unit she was working on was behaving unexpectedly. Before making changes to the default service file, she wants to create a temporary override that will only last until the next reboot. Where should she place the override files to ensure they are temporary?

A systems administrator, Zoe, wants to check the status of a service named “webapp.service” on her Linux server managed by systemd. Additionally, she wants to see the last 5 log entries related to this service. Which systemctl command should she use?

Jasmine, a systems administrator, has been tasked with identifying the differences between the vendor versions of unit files and the local versions on her Linux server managed by systemd. Which command would Jasmine use to achieve this?

Lucas is trying to debug a custom service on a legacy system. He needs to run the service in debug mode to obtain more logs. Which command should Lucas use to invoke the debug mode if the initialization script for the service is located in /etc/init.d/ and accepts the “debug” option?

Hector, an experienced sysadmin, needs to disable a particular service from starting at boot on an older Linux system. If he is working within the /etc/rc.d/ directory structure, which of the following directories would he likely navigate to in order to adjust the links for the default runlevel?

You have been tasked with ensuring that a specific USB drive is always mounted to /media/usbdrive upon system boot, regardless of the order it’s detected. You know that the UUID of the drive is 1234-ABCD. Which of the following fstab entries would best accomplish this?

You are working as a system administrator and a colleague asks you to automatically mount an NFS share on boot for all users. You decide to configure this in the fstab file. Which of the following entries would correctly mount an NFS share located at 192.168.0.10:/data to the /mnt/data directory?

You’re a system administrator at a company, and an intern is learning about swap space on Linux systems. She asks you which command to use to check the swap usage on the system. Which of the following would you recommend?

A fellow system administrator is configuring a new server. They want to make sure that even if the physical drives are rearranged or replaced, the server will still correctly identify and mount the desired partitions. Which method would you suggest for this purpose?

Your colleague is attempting to create a systemd mount unit for an NFS share. They want the share to be automatically mounted at boot. Which filename would be appropriate for a mount unit that mounts an NFS share located at server:/remote/share to the local directory /mnt/data?

You’re setting up an NFS share in the /etc/fstab file to be mounted on /mnt/data from server:/share. Which of the following lines in /etc/fstab will correctly achieve this, with the filesystem being mounted at boot and allowing the user to manually unmount it?

After updating the /etc/fstab file, you want to ensure that all the entries are correct without rebooting the system or unmounting and remounting the filesystems. Which command allows you to test the new entries without affecting the currently mounted filesystems?

You’ve been tasked with determining the current state of all mounted filesystems on a running Linux server. Which statement accurately describes the primary role of the /etc/mtab file in this context?

You noticed a discrepancy between the output of the mount command and the contents of /etc/mtab. Which statement is likely true about this scenario?

You’ve been asked to confirm the current state of all mounted filesystems on a modern Linux server. Your colleague suggests checking the /etc/mtab file. However, you remember something about /proc/mounts. How do these two files relate?

A system administrator wants to monitor and manage software RAID arrays on a Linux system. Which utility would be the primary tool for such tasks?

A system administrator has set up a software RAID array on a Linux system. They want to verify the configuration and status of the RAID devices. Which file should they examine to gather this information?

A system administrator wants to specify the location of the spare devices that are part of the software RAID array configuration. Which section within the mdadm.conf file is dedicated to listing these spare devices?

An administrator is working with mdadm.conf and wants to ensure that RAID arrays are assembled in a particular order during boot-up. Which directive in the mdadm.conf file should they configure to achieve this?

As a system administrator, you need to create a new RAID 5 array using devices /dev/sdb, /dev/sdc, and /dev/sdd. Which mdadm command will correctly set up this array on /dev/md0?

A system administrator needs to monitor the rebuilding progress of a RAID array on /dev/md0. Which mdadm command should they use to obtain detailed information about the status of the RAID array?

A system administrator wants to quickly inspect the status of all active RAID arrays on a Linux server. Which file should they consult to gather real-time status updates and progress of potential RAID rebuilds?

After replacing a failed disk in a RAID 1 array, an administrator wants to verify that the RAID is resyncing properly. In the /proc/mdstat output, which keyword indicates that the RAID is currently undergoing a resynchronization process?

A system administrator is setting up a new RAID array on a Linux server. While configuring partitions using fdisk, which hex code should they use to mark the partitions as Linux RAID autodetect?

While troubleshooting a RAID issue, a junior administrator seeks your guidance. They share with you the output of the partition table where you observe a partition marked with type 0xFD. What could you infer about this partition?

An administrator wants to configure the IP address of an ethernet interface on a temporary basis without making changes to any configuration files. Which utility allows the administrator to achieve this without needing to restart the networking service?

A server administrator wants to disable the “eth0” ethernet interface on a Linux server. Which command would achieve this task directly?

A system administrator needs to list the available wireless networks for a wireless interface named “wlan0”. Which command would directly provide this information?

An administrator wants to connect to a wireless network named “HomeWiFi” using WPA2 security. Which file would the administrator typically need to modify in order to provide the SSID and passphrase for the network?

You are asked to replace the deprecated ifconfig command to determine the IP address, subnet mask, and broadcast address of all currently active network interfaces on your Linux system. Which command would you use?

An administrator needs to add a default gateway with the IP address “192.168.1.1” to the system’s routing table. Which command should they use?

A system administrator needs to temporarily set the IP address of the eth0 interface to 192.168.0.10 with a subnet mask of 255.255.255.0. Which command should they use?

After experiencing connectivity issues, a network administrator decides to view the configuration of all active network interfaces. Which command will display this information?

A system administrator needs to add a static route to the routing table so that traffic destined for the 192.168.5.0/24 network is directed through the gateway at 192.168.1.1. Which command should they use?

An administrator wants to view the kernel’s IP routing table. Which command would provide this information?

You need to unpack a source code archive using a common compression utility. Which command would you use for a file named “project.tar.gz”?

You want to unpack a source code archive, and the file is named “software.tar.bz2.” Which command should you use?

You are tasked with compiling a program from source using the make command. The program’s source code is in a directory named “myapp” with a makefile. What is the correct command to compile the program?

You are working with a source code directory that contains a makefile with multiple targets. You want to compile the program and clean the intermediate files afterward. What command should you use?

You are compiling a program from source, and you need to customize the installation path. Which option should you use when running the configure script?

You want to compile and install a program, but you need to specify a different directory for binary executables. What option should you use when running the configure script?

While attempting to compile a program from source, you need to locate the default directory where source files are stored. What is the standard location for storing source files?

You are exploring the filesystem to locate the default directory where source files are stored. What directory should you check to find the source code for various software packages?

You are tasked with compiling a program from source, and you want to ensure that the source files are stored in the default directory. Where should you check for the default location of source files?

You are troubleshooting a compilation issue with a program, and you suspect that the source files are not in the default location. Where should you navigate to check for the presence of source files on a standard Linux system?