The Linux Operating System

Which command lists all files in a directory including hidden ones?

Which TWO of the following are examples of Linux distributions?

Which TWO of the following are examples of common Linux filesystems?

You need to determine the UUID of a partition to add it to /etc/fstab. Which command should you use?

You need to ensure that a server's time is synchronized with an external time source to prevent authentication errors. Which daemon is responsible for this?

A user reports that they cannot save files to their home directory. You find that the disk is not full. What is the most likely cause related to hardware-based limitations?

You have added a new hard drive to your Linux server, but the system does not automatically recognize the device. What is the first step you should take to verify if the kernel detects the hardware?

Which TWO of the following are valid ways to view system logs?

An administrator wants to view the current system load and active processes. Which utility is the most appropriate for a real-time monitor?

You are configuring a Linux server and need to determine which hard drive partition is currently mounted as the root filesystem. Which file should you inspect?

Which THREE of the following are components of a standard network configuration?

You are setting up a local network and need to verify the path traffic takes to reach a remote host. Which command should you use?

Which command is used to display the current directory path in the terminal?

A developer needs to know the kernel version currently running on the server. Which command provides this information?

You are trying to troubleshoot why a user cannot connect to your server via SSH. You want to see if the SSH daemon is listening on the appropriate port. Which command should you run?

Which TWO of the following commands help in identifying hardware on a system?

You suspect that a process is consuming too much CPU. Which command allows you to sort active processes by CPU usage?

You are configuring a static IP address on a Debian-based server. Which file must be modified to make this change persistent across reboots?

You have modified a configuration file for a network service. Which command is best practice to test the configuration syntax before restarting the service?

Which THREE commands can be used to display information about system memory?

A server is running out of disk space. Which command allows you to view the space usage of directories in a human-readable format?

Which TWO of the following directories are usually located at the root of a Linux filesystem?

A system administrator is checking for hardware errors in the logs. Where are general system messages usually stored?

Which TWO of the following are considered hardware components?

You are troubleshooting a network issue where a Linux server cannot reach an external website. The ping command to the gateway succeeds, but pinging the website IP fails. Which configuration file should you check to ensure the server can resolve domain names?

Which TWO of the following tools allow you to manage disk partitions?

A junior admin is confused about the difference between software RAID and hardware RAID. Which of the following is a primary characteristic of software RAID?

You need to change the ownership of a file to user 'admin'. Which command is the correct way to do this?

You are managing a Linux server and need to confirm the IP address assigned to the eth0 interface. Which command is most appropriate on modern distributions?

Which THREE of the following files/commands are involved in system startup or services?

An administrator needs to monitor network traffic in real-time on a specific interface. Which tool is commonly used to capture and display packets?

A system administrator wants to check the partition table of a specific disk. Which tool is used for this?

Which THREE of the following items are typically found in the /etc directory?

What is the purpose of the /proc directory in Linux?

Which TWO commands are commonly used to check network connectivity to a host?

A small business owner wants to implement a server that allows for long-term support and stability for critical financial applications. Which distribution strategy should they prioritize?

A technician needs to identify the amount of RAM installed in a server without opening the chassis. Which command provides this information from the command line?