102-500試験問題集を提供していますLpi問題 [Q14-Q30]

102-500試験問題集を提供していますLpi問題

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Lpi 102-500 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Correctly select the script interpreter through the shebang (#!) line Configure timezone settings and environment variables
トピック 2	Manage access to the X server and display applications on remote X servers Write Bash functions for frequently used sequences of commands
トピック 3	Create and manage special purpose and limited accounts Manage the location, ownership, execution and suid-rights of scripts
トピック 4	Configure locale settings and environment variables Basic knowledge of visual settings and themes
トピック 5	Automate system administration tasks by scheduling jobs Manage user and group accounts and related system files
トピック 6	Demonstrate knowledge and awareness of accessibility technologies Maintain skeleton directories for new user accounts
トピック 7	Awareness of protocols to access remote desktop sessions Use standard sh syntax (loops, tests)
トピック 8	Understand the components of desktop environments Customize and use the shell environment
トピック 9	Test return values for success or failure or other information provided by a command Understanding of the X11 architecture
トピック 10	Overwrite specific aspects of Xorg configuration, such as keyboard layout Set command search path with the proper directory

 

質問 14
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.)

正解:

解説:
TZ

 

質問 15
Which of the following find commands will print out a list of files owned by root and with the SUID bit set in
/usr?

• A. find -type suid -username root -d /usr
• B. find /usr -ls \*s\* -u root
• C. find -user root +mode +s /usr
• D. find /usr -uid 0 -perm +4000
• E. find /usr -suid -perm +4000

正解: D

 

質問 16
Which command makes the shell variable named VARIABLE visible to subshells?

• A. set VARIABLE
• B. env VARIABLE
• C. export $VARIABLE
• D. set $VARIABLE
• E. export VARIABLE

正解: E

 

質問 17
What command should be used to print a listing of email in the system's mail queue?

• A. lpq
• B. mlq
• C. sendmail -l
• D. mailq

正解: D

 

質問 18
What output will the following command produce?
seq 1 5 20

• A. 1
  2
  3
  4
• B. 2
  3
  4
  5
• C. 5
  10
  15
  20
• D. 1
  6
  1
  1
  1
  6
• E. 1
  5
  10
  15

正解: D

 

質問 19
FILL BLANK
What command is used to add OpenSSH private keys to a running ssh-agentinstance? (Specify the command name only without any path.)

正解:

解説:
sh-add

 

質問 20
FILL BLANK
The presence of what file will temporarily prevent all users except root from logging into a system? (Specify the full name of the file, including path.)

正解:

解説:
/sbin/nologin

 

質問 21
When the command echo $$ outputs 12942, what is the meaning of 12942?

• A. It is the process ID of the echo command.
• B. It is the process ID of the current shell.
• C. It is the process ID of the last command which has been placed in the background.
• D. It is the process ID of the last command executed.

正解: B

 

質問 22
Which of the following statements is true regarding systemd timer units?

• A. A dedicated system service, systemd-cron, handles the execution of timer units.
• B. Timer units can only be defined within a service unit's file.
• C. Each systemd timer unit controls a specific systemd service unit.
• D. The command executed by the timer is specified in the timer unit's [Cmd]section.
• E. Timer units only exist in the system scope and are not available for users.

正解: C

解説:
Explanation/Reference:

 

質問 23
What output is produced by the following command sequence?
echo '1 2 3 4 5 6' | while read a b c; do
echo result $c $b $a;
done

• A. result: 6 5 4
• B. result: 6 5 4 3 2 1
• C. result: 3 2 1
• D. result: 1 2 3 4 5 6
• E. result: 3 4 5 6 2 1

正解: E

 

質問 24
Which character in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

• A. x
• B. *
• C. -
• D. s

正解: A

 

質問 25
Which of the following comparison operators for test work on elements in the file system? (Choose two.)

• A. -z
• B. -f
• C. -lt
• D. -d
• E. -eq

正解: B,D

 

質問 26
Which of the following entries in /etc/syslog.conf writes all mail related events to the file /var/log/ maillog and sends all critical events to the remote server logger.example.com?

• A. mail /var/log/maillog
  mail.crit @logger.example.org
• B. mail.* /var/log/maillog
  mail.crit syslog://logger.example.org
• C. mail.* /var/log/maillog
  mail,crit @logger.example.org
• D. mail * /var/log/maillog
  mail crit @logger.example.org
• E. mail.* /var/log/maillog
  mail.crit @logger.example.org

正解: E

 

質問 27
Which of the following configuration files should be modified to set default shell variables for all users?

• A. /etc/bashrc
• B. /etc/profile
• C. /etc/.bashrc
• D. ~/.bash_profile

正解: B

 

質問 28
Which commands can be used to change a user's account aging information? (Choose THREE correct answers.)

• A. chsh
• B. chage
• C. chattr
• D. usermod
• E. passwd

正解: B,D,E

 

質問 29
How can a specific user be prevented from scheduling tasks with at?

• A. By adding the specific user to the /etc/at.deny file.
• B. By adding the specific user to the /etc/at.allow file.
• C. By executing the atd --deny [user] command.
• D. By adding the specific user to the nojobs group.
• E. By adding the specific user to the [deny] section in the /etc/atd.conf file.

正解: A

 

質問 30
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