LFCS Linux Foundation Certified System Administrator Questions and Answers

Which of the following commands lists the dependencies of a given dpkg package?

When running the command

sed -e "s/a/b/" /tmp/file >/tmp/file

While /tmp/file contains data, why is /tmp/file empty afterwards?

Which signal is missing from the following command that is commonly used to instruct adaemon to reinitialize itself, including reading configuration files?

killall -s _______ daemon

Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s46-c-k-no/photo.jpg

How can the normal output of a command be written to a file while discarding the error output?

Which of the following commands creates an ext3 filesystem on /dev/sdb1? (Choose TWO correct answers.)

Creating a hard link to an ordinary file returns an error. What could be the reason for this?

After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.)

Which of the following is a legacy program provided by CUPS for sending files to the printer queues on the command line?

What does the exit status 0 indicate about a process?

By default, the contents of which directory will be copied to a new user's home directory when the account is created by passing the -m option to the useradd command? (Specify the full path to the directory.)

What does the command mount -a do?

How is a display manager started?

During a system boot cycle, what program is executed after the BIOS completes its tasks?

In compliance with the FHS, in which of the directories are man pages found?

What output will the command seq 10 produce?

Which of the following settingsfor umask ensures that new files have the default permissions -rw-r----- ?

Whenremoving a package, which of the following dpkg options will completely remove the files including configuration files?

Which command will disable swapping on a device? (Specify ONLY the command without any path or parameters.)

What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)

Where are user specific crontabs stored?

What of the following can be done by the command ifconfig? (Choose TWO correct answers.)

Which of the following details is NOT provided in any output from the netstat utility?

Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)

Which command is used to sync the hardware clock to the system clock? (Specify ONLY the command without any path or parameters.)

Which command is used to create and initialize the files used to store quota information? (Specify ONLY the commandwithout any path or parameters.)

In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?

In the vi editor, which of the following commands will copy the current line into the vi buffer?

Which umask value will result in the default access permissions of 600 (rw-------) for files and 700 (rwx------) for directories? (Specify only the numerical umask value.)

Which command can be used to investigate the properties for a particular window in X by clicking that window? (Specify ONLY the command without any path or parameters.)

Which of the following commands can be used to search for the executable file foo when it has been placed in a directory not included in $PATH?

A user accidentally created the subdirectory \dir in his home directory. Which of the following commands will remove that directory?

For accessibility assistance, which of the following programs is an on-screen keyboard?

Which of the following statements is correct when talking about /proc/?

Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)