LX0-104 Practice Questions

What output will the following command produce? seq 1 5 20

When the command echo $$ outputs 12942, what is the meaning of 12942?

Which of the following commands puts the output of the command date into the shell variable mydate?

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?

When the command echo $ outputs 1, which of the following statements is true?

What is the purpose of the file /etc/profile?

The X11 configuration file xorg.conf is grouped into sections. How is the content of the section SectionName associated with that section?

Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?

Which of the following commands can be used to limit the amount of memory a user may use?

Which of the following commands connects to the remote host example.com which has OpenSSH listening on TCP port 2222? (Choose TWO correct answers.)

What is a purpose of an SSH host key?

Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?

Which file used by XDM specifies the default wallpaper?

What is the purpose of the iconv command?

In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

Which command can be used to delete a group from a Linux system?

Which of the following files assigns a user to its primary group?

What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)

To prevent a specific user from scheduling tasks with at, what should the administrator do?

What is true about the ntpdate command?

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

Which of the following commands is used to rotate, compress, and mail system logs?

What is the purpose of the command mailq?

Which of the following is observed and corrected by a NTP client?

Why is the correct configuration of a system's time zone important?

Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)

What is true regarding the command sendmail?

Which file inside the CUPS configuration directory contains the definition of the printers?

What is true regarding the file ~/.forward?

What entry can be added to the syslog.conf file to have all syslog messages generated by a system displayed on console 12?

Which of the following tasks can be accomplished using the command date? (Choose TWO correct answers.)

Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose TWO correct answers.)

Which of the following are syslog facilities? (Choose TWO correct answers.)

Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)

What is true regarding TCP port 23?

Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)

On a regular users workstation the route command takes a long time before printing out the routing table. Which of the following errors does that indicate?

Which of the following is a valid IPv6 address?

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

Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)

What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)

Which of the following is true about IPv6?

Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query?

What is the purpose of the nsswitch.conf file?

Which of the following statements is valid in the file /etc/nsswitch.conf?

What is true regarding a default route?

Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.)

Each entry in a crontab must end with what character?

Where are user specific crontabs stored?