A systems administrator notices several intensive tasks executing from users Joe and Ann. These processes are impacting server operations but must be allowed to continue running.
Which of the following commands should the systems administrator run to reduce the impact on the server?

When logging in, an administrator must use a temporary six-digit code that is displayed on a key fob.
Which of the following has been implemented?

An administrator needs to see a list of the system user's encrypted passwords. Which of the following Linux files does the administrator need to read?

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 dfcommand 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 is restoring the SELinux contexts on an entire system. Which of the following commands is the BEST option to complete this task?