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Users are reporting that various programs are crashing on the server. When examining logs, you see that certain processes are reporting out-of-memory conditions. Which command can you use to see the overall memory usage, including available swap space?A . freeB . treeC . uptimeD . pgrepView AnswerAnswer: A

How many SCSI devices are supported per bus?A . 12B . 4C . 7 to 15D . 2 to 4View AnswerAnswer: C

Which of the following regular expressions will match the strings dog, dug, and various other strings but not dig?A . d.igB . d.gC . di*gD . d[o-u]gE . d[ou]gView AnswerAnswer: D

What is an advantage of a journaling filesystem over a conventional (non-journaling) filesystem?A . Journaling filesystems support Linux ownership and permissions; non-journaling filesystems don't.B . Journaling filesystems record all transactions, enabling them to be undone.C . Journaling filesystems never need to be checked with fsck.D . Journaling filesystems are older...

In Bash, inserting 2>&1 after a command redirects:A . standard output to standard input.B . standard error to standard input.C . standard error to standard output.D . standard input to standard error.E . standard output to standard error.View AnswerAnswer: C

What is one reason why a device driver does not appear in the output of lsmod, even though the device is loaded and working properly?A . Support for the device has been compiled directly into the kernel.B . The use of systemd means that drivers are not required for most...

Which of the following best describes the difference between HISTSIZE and HISTFILESIZE in Bash?A . HISTSIZE and HISTFILESIZE are the same.B . HISTSIZE is the number of overall history entries to keep in the .bash_history, while HISTFILESIZE sets the number of commands to keep for the current session.C . HISTFILESIZE...

Which of the following commands will change all occurrences of dog in the file animals.txt to mutt in the screen display?A . sed Cs “dog” “mutt” animals.txtB . grep Cs “dog||mutt” animals.txtC . sed ‘s/dog/mutt/g’ animals.txtD . cat animals.txt | grep Cc “dog” “mutt”E . fmt animals.txt | cut ‘dog’...

Which command can be run to determine the default priority for processes spawned by the current user?A . reniceB . prioC . niceD . defpriorityView AnswerAnswer: C

Which command can you use to send a message to all users who are currently logged into a system?A . catB . sshC . wallD . teeView AnswerAnswer: C