101-400 lab(11 to 20) for IT professionals: Dec 2017 Edition

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Q11. - (Topic 4) 

Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting? 

A. tune2fs -d 200 /dev/sda1 

B. tune2fs -c 200 /dev/sda1 

C. tune2fs -i 200 /dev/sda1 

D. tune2fs -n 200 /dev/sda1 

E. tune2fs --days 200 /dev/sda1 

Answer:


Q12. CORRECT TEXT - (Topic 2) 

Which option to the yum command will update the entire system? (Specify ONLY the option name without any additional parameters.) 

Answer: update, upgrade 


Q13. CORRECT TEXT - (Topic 2) 

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

Answer: swapoff, /sbin/swapoff 


Q14. - (Topic 1) 

Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target? 

A. systemd.target=rescue.target 

B. systemd.runlevel=rescue.target 

C. systemd.service=rescue.target 

D. systemd.default=rescue.target 

E. systemd.unit=rescue.target 

Answer:


Q15. - (Topic 3) 

Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct answers.) 

A. esc ZZ 

B. ctrl :w! 

C. esc zz 

D. esc :wq! 

E. ctrl XX 

Answer: A,D 


Q16. - (Topic 3) 

Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.) 

A. < 

B. <<< 

C. > 

D. >>> 

E. %> 

Answer: A,B,C 


Q17. CORRECT TEXT - (Topic 2) 

Which world-writable directory should be placed on a separate partition in order to prevent users from being able to fill up the / filesystem? (Specify the full path to the directory.) 

Answer: /tmp, tmp, /var/tmp, /tmp/, /var/tmp/ 


Q18. - (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 


Q19. - (Topic 2) 

Which of the following is correct when talking about mount points? 

A. Every existing directory can be used as a mount point. 

B. Only empty directories can be used as a mount point. 

C. Directories need to have the SetUID flag set to be used as a mount point. 

D. Files within a directory are deleted when the directory is used as a mount point. 

Answer:


Q20. - (Topic 3) 

In a nested directory structure, which find command line option would be used to restrict the command to searching down a particular number of subdirectories? 

A. -dirmax 

B. -maxdepth 

C. -maxlevels 

D. -n 

E. -s 

Answer: