Linux-Foundation LFCS DUMPS WITH REAL EXAM QUESTIONS

PDF Last Updated : Jul 06, 2026
260 Total Questions
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Linux-Foundation LFCS Sample Questions
Question # 1

To prevent a specific user from scheduling tasks with at, what should the administrator do? 

A. Add the specific user to /etc/at.allow file.  
B. Add the specific user to [deny] section in the /etc/atd.conf file.  
C. Add the specific user to /etc/at.deny file.  
D. Add the specific user to nojobs group.  
E. Run the following: atd --deny [user].  



Question # 2

Which of the following is the device file name for the second partition on the only SCSI drive?

A. /dev/hda1 
B. /dev/sda2 
C. /dev/sd0a2 
D. /dev/sd1p2 



Question # 3

Which of the following commands will reduce all consecutive spaces down to a single space?

A. tr '\s' ' ' < a.txt > b.txt 
B. tr -c ' ' < a.txt > b.txt 
C. tr -d ' ' < a.txt > b.txt 
D. tr -r ' ' '\n' < a.txt >b.txt 
E. tr -s ' ' < a.txt > b.txt



Question # 4

Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt? 

A. file /tmp/myfile.txt  
B. echo "Hello" >/tmp/myfile.txt  
C. sed -ie "s/1/2/" /tmp/myfile.txt  
D. echo -n "Hello" >>/tmp/myfile.txt  
E. touch /tmp/myfile.txt  



Question # 5

After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)

A. By creating an ACL redirection from the old to the new path of the data. 
B. By creating a hard link from the old to the new path of the data.
 C. By creating a symbolic link from the old to the new path of the data. 
D. By running the command touch on the old path. 
E. By mounting the new filesystem on the original path of the data. 



Question # 6

In Bash, inserting 1>&2 after a command redirects 

A. standard error to standard input.  
B. standard input to standard error.  
C. standard output to standard error.  
D. standard error to standardoutput.  
E. standard output to standard input.  



Question # 7

Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)



Question # 8

When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?

A. -10  
B. 0  
C. 10  
D. 20  



Question # 9

In order to display all currently mounted filesystems, which of the following commands could be used? (Choose TWO correct answers.)

A. cat /proc/self/mounts 
B. free 
C. mount 
D. lsmounts
 E. cat /proc/filesystems



Question # 10

What is the default name of the configuration file for the Xorg X11 server? (Specify the file name only without any path.)