Exam 18: CompTIA Linux+

A Linux administrator tried to copy files to a remote server but received an error message indicating a lack of free space on the disk. The administrator issued a df command and verified adequate free space and inodes on the filesystem. Which of the following commands is the BEST way to diagnose the issue?

A Linux administrator opens a ticket to have an external hard drive mounted. As a security policy, external storage kernel modules are disabled. Which of the following is the BEST command for adding the proper kernel module to enable external storage modules?

A Linux administrator built a GitLab server. Later that day, a software engineer tried to access the server to upload the repository during the final step of installation. The software engineer could not access the website. Which of the following firewall rules would allow access to this site?

A systems administrator notices a large number of autoloaded device modules are no longer needed and decides to do a cleanup of them. Which of the following commands will accomplish this task?

A systems administrator observes high latency values when reaching a remote web server. Which of the following commands will help determine and isolate issues on the network side?

Users in the payroll department are not configured to use DNS due to security concerns. The users ask the junior Linux administrator to configure their workstations to access the payroll server at 192.168.204.11 by the name "Payroll". Which of the following commands should the administrator issue to meet this request?

An administrator needs to generate a list of services that are listening on TCP and/or UDP ports. Which of the following tools should the administrator use?

An administrator receives the following message on a remote server: Cannot open display . Which of the following should the administrator have used to log in to the server?

Which of the following boot methods can a Linux administrator use to boot a Linux server remotely via a network interface card instead of a local disk?

Given the output below: [root@appserver ~]# rm config.txt rm: remove regular file 'config.txt'? yes rm: cannot remove 'config.txt': Operation not permitted Which of the following might be the cause?

A systems administrator needs to allow the Linux server to receive HTTP connections from Internet hosts. By default, the port for HTTP connections is blocked. Which of the following rules should be added in the firewall to allow this type of connection?

A new IO card has been added to the security server to log the opening and closing of the main entrance. A switch is attached, so the interface card returns a 1 when the door is opened and a 0 when the door is closed. Which of the following describes the Linux device to which this switch is attached?

A systems administrator configured a new kernel module, but it stopped working after reboot. Which of the following will allow the systems administrator to check for module problems during server startup?

A Linux engineer is troubleshooting a newly added SCSI device for a Linux server that needed more disk space without rebooting. The engineer discovers that the new device is not visible by the Linux kernel in fdisk -l output. Which of the following commands should be used to rescan the entire SCSI bus?

A junior administrator is installing kernel modules. The administrator is given a checklist that outlines the following tasks to be completed: Display currently installed module version. Display which modules loaded at startup. Which of the following commands would be used to accomplish these tasks? (Choose two.)

An administrator needs to kill the oldest Bash shell running in the system. Which of the following commands should be issued to accomplish this task?

A Linux storage administrator wants to create a logical volume group. Which of the following commands is required to start the process?

A systems administrator wants to mount an ISO to access its content. Using /mnt as a mount point, which of the following is the correct syntax?

A Linux administrator needs to remove a USB drive from a system. The unmount command fails, stating the device is busy. Which of the following commands will show the reason for this error?

Due to security policies, a restriction was implemented that forbids direct access to the database server. The junior administrator needs to connect using SSH tunneling. Which of the following commands allows the junior administrator to connect from a desktop?