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2021 Nov LX0-103 book

Q11. - (Topic 3) 

Which character, added to the end of a command, runs that command in the background as a child process of the current shell? 

A. ! 

B. + 

C. & 

D. % 

E. # 

Answer: C 


Q12. - (Topic 4) 

Instead of supplying an explicit device in /etc/fstab for mounting, what other options may be used to identify the intended partition? (Choose TWO correct answers.) 

A. FIND 

B. ID 

C. LABEL 

D. NAME 

E. UUID 

Answer: C,E 


Q13. CORRECT TEXT - (Topic 4) 

Which command is used to create and initialize the files used to store quota information? (Specify ONLY the command without any path or parameters.) 

Answer: quotacheck 


Q14. CORRECT TEXT - (Topic 3) 

Which command displays a list of all background tasks running in the current shell? (Specify ONLY the command without any path or parameters.) 

Answer: jobs 


Q15. - (Topic 4) 

What does the command mount -a do? 

A. It ensures that all file systems listed with the option noauto in /etc/fstab are mounted. 

B. It shows all mounted file systems that have been automatically mounted. 

C. It opens an editor with root privileges and loads /etc/fstab for editing. 

D. It ensures that all file systems listed with the option auto in /etc/fstab are mounted. 

E. It ensures that all file systems listed in /etc/fstab are mounted regardless of their options. 

Answer: D 


Refresh LX0-103 answers:

Q16. - (Topic 3) 

What does the ? symbol within regular expressions represent? 

A. Match the preceding qualifier one or more times. 

B. Match the preceding qualifier zero or more times. 

C. Match the preceding qualifier zero or one times. 

D. Match a literal ? character. 

Answer: C 


Q17. - (Topic 4) 

After running the command umount /mnt, the following error message is displayed: 

umount: /mnt: device is busy. 

What is a common reason for this message? 

A. The kernel has not finished flushing disk writes to the mounted device. 

B. A user has a file open in the /mnt directory. 

C. Another file system still contains a symlink to a file inside /mnt. 

D. The files in /mnt have been scanned and added to the locate database. 

E. The kernel thinks that a process is about to open a file in /mnt for reading. 

Answer: B 


Q18. - (Topic 3) 

Which variable defines the directories in which a Bash shell searches for executable commands? 

A. BASHEXEC 

B. BASHRC 

C. PATH 

D. EXECPATH 

E. PATHRC 

Answer: C 


Q19. - (Topic 3) 

Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.) 

A. uptime 

B. up 

C. top 

D. uname -u 

E. time–up 

Answer: A,C 


Q20. - (Topic 1) 

Which SysV init configuration file should be modified to disable the ctrl-alt-delete key combination? 

A. /etc/keys 

B. /proc/keys 

C. /etc/inittab 

D. /proc/inittab 

E. /etc/reboot 

Answer: C