102-400 Exam Questions
158 real 102-400 exam questions with expert-verified answers and explanations. Page 1 of 4.
- Question #1
When the command echo $$ outputs 12942, what is the meaning of 12942?
- Question #2
What is the purpose of a screen reader?
- Question #3
How is a display manager started?
- Question #5
Which of the following commands shows the current color depth of the X Server?
- Question #6
For accessibility assistance, which of the following programs is an on-screen keyboard?
- Question #8
Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)
- Question #9
Which of the following steps prevents a user from obtaining an interactive login session?
- Question #11
Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?
- Question #13
Which of the following fields are available in both the global /etc/crontab file as well as in user- specific crontab files? (Select TWO correct answers)
- Question #14
Which command can be used to delete a group from a Linux system?
- Question #15
What is the purpose of the iconv command?
- Question #16
In case neither cron.allow nor cron.deny exist in /etc/, which of the following is true?
- Question #17
Which of the following commands can remove a user from a group?
- Question #18
Where are user specific crontabs stored?
- Question #19
Which file contains the date of the last change of a user's password?
- Question #21
Each entry in a crontab must end with what character?
- Question #22
What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)
- Question #23
Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)
- Question #25
Why is the correct configuration of a system's time zone important?
- Question #26
Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose TWO correct answers.)
- Question #27
Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)
- Question #28
Which of the following is observed and corrected by a NTP client?
- Question #32
Which of the following is a legacy program provided by CUPS for sending files to the printer queues on the command line?
- Question #33
What entry can be added to the syslog.conf file to have all syslog messages generated by a system displayed on console 12?
- Question #34
What is true about the ntpdate command?
- Question #35
What is true regarding the file ~/.forward?
- Question #36
Which of the following commands is used to rotate, compress, and mail system logs?
- Question #37
What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)
- Question #38
What is the purpose of the nsswitch.conf file?
- Question #40
Which of the following commands will help identify a broken router between the local and the remote machine?
- Question #41
Which of the following details is NOT provided in any output from the netstat utility?
- Question #42
Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.)
- Question #43
Which of the following is true about IPv6?
- Question #46
What is true regarding a default route?
- Question #48
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.)
- Question #49
Which of the following may occur as a consequence of using the command ifconfig? (Choose THREE correct answers.)
- Question #50
What is true regarding TCP port 23?
- Question #53
Which of the following statements is valid in the file /etc/nsswitch.conf?
- Question #56
Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)
- Question #57
Which of the following tools used for DNS debugging, reports not only the response from the name server but also details about the query?
- Question #58
What of the following can be done by the command ifconfig? (Choose TWO correct answers.)
- Question #59
Which of the following programs can be used to determine the routing path to a given destination?
- Question #60
Given the following routing table: How would an outgoing packet to the destination 192.168.2.150 be handled?
- Question #61
Which of the following is a valid IPv6 address?
- Question #62
Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct answers.)
- Question #63
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?
- Question #69
Which configuration file would be edited to change the default options for outbound SSH sessions?
- Question #70
Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?
- Question #71
Which command is used to set restrictions on the size of a core file that is created for a user when a program crashes?
- Question #72
When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?