Question 1

Which of the following commands will display the last 30 lines of /var/log/bigd.log as well as new content as it is appended to the file by another process?

Options :

A : cut -30 -v /var/log/bigd.log

B : head -30 -e /var/log/bigd.log

C : tail -f -n 30 /var/log/bigd.log

D : tac -30 /var/log/bigd.log

E : cat -r -n 30 /var/log/bigd.log

Answer: C

Question 2

You are logged in as user tux1, but now you want to switch users to tux2 with tux2's environment. How would you do this?

Options :

A : su tux2

B : su -e tux2

C : su - tux2

D : su -m tux2

E : su -f tux2

Answer: C

Question 3

Which of the following GNU commands would be the most likely command you'd use to find the system load average?

Options :

A : top

B : nice

C : loadavg

D : cpustat

E : ps

Answer: A

Question 4

What effect does the sticky bit have when set on a directory?

Options :

A : There is no effect because the sticky bit has been deprecated in Linux.

B : It provides a hint to the kernel that files in this directory should be cached in memory, if possible.

C : It restricts deletion of files in this directory to only the root user and the file owner regardless of write permissions for other users.

D : It instructs the kernel to keep the underlying data for the files in the directory intact to allow for undeletion of important files.

Answer: C

Question 5

During a system boot cycle, what is the program that is run after the BIOS completes its tasks?

Options :

A : The bootloader

B : The inetd program

C : The init program

D : The kernel

Answer: A

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