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Q21. – (Topic 3) 

Which of the following steps prevents a user from obtaining an interactive login session? 

A. Run the command chsh -s /bin/false with the user name. 

B. Set the UID for the user to 0. 

C. Remove the user from the group staff. 

D. Add the user to /etc/noaccess. 

E. Create a .nologin file in the user's home directory. 


Q22. – (Topic 3) 

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays? 

A. 0 * * * 30 myscript 

B. 30 * * * 6 myscript 

C. 30 0 * * 0 myscript 

D. 30 0-23 * * 0 myscript 

E. 0 0-23 * * 30 myscript 


Q23. – (Topic 1) 

What output will the following command produce? 

seq 1 5 20 

A. 1 6 1 1 1 6 

B. 1 5 10 15 

C. 1 2 3 4 

D. 2 3 4 5 

E. 5 10 15 20 


Q24. – (Topic 5) 

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.) 

A. resolv 

B. dns 

C. remote 

D. files 

E. hosts 

Answer: B,D 

Q25. CORRECT TEXT – (Topic 5) 

With IPv6, how many bits have been used for the interface identifier of an unicast address? (Specify the number using digits only.) 

Answer: 64 

Q26. CORRECT TEXT – (Topic 1) 

By default, the contents of which directory will be copied to a new user's home directory when the account is created by passing the -m option to the useradd command? (Specify the full path to the directory.) 

Answer: /etc/skel 

Q27. – (Topic 2) 

Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.) 

A. Start and prepare the desktop environment for the user. 

B. Configure additional devices like new monitors or projectors when they are attached. 

C. Handle the login of a user. 

D. Lock the screen when the user was inactive for a configurable amount of time. 

E. Create an X11 configuration file for the current graphic devices and monitors. 

Answer: A,C 

Q28. CORRECT TEXT – (Topic 6) 

Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.) 

Answer: /etc/sudoers 

Q29. – (Topic 5) 

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

A. broadcast services 

B. interface statistics 

C. masquerading connections 

D. network connections 

E. routing tables 


Q30. CORRECT TEXT – (Topic 4) 

After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.) 

Answer: newaliases, sendmail -bi