Q1. - (Topic 2) 

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it? 

A. dd if=/dev/zero of=/dev/sda bs=512 

B. dd if=/dev/zero of=/dev/sda bs=512 count=1 

C. dd if=/dev/zero of=/dev/sda bs=440 count=1 

D. dd if=/dev/zero of=/dev/sda bs=440 

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Q2. - (Topic 4) 

Which of the following commands will change the quota for a specific user? 

A. edquota 

B. repquota 

C. quota -e 

D. quota 

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Q3. 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.) 

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Q4. CORRECT TEXT - (Topic 3) 

Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.) 

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Q5. - (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. 

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Q6. - (Topic 3) 

What is the maximum niceness value that a regular user can assign to a process with the nice command when executing a new process? 

A. 9 

B. 19 

C. 49 

D. 99 

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Q7. - (Topic 1) 

Which of the following statements is correct when talking about /proc/? 

A. All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot. 

B. All files within /proc/ are read-only and their contents cannot be changed. 

C. All changes to files in /proc/ are immediately recognized by the kernel. 

D. All files within /proc/ are only readable by the root user. 

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Q8. - (Topic 3) 

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 

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Q9. - (Topic 3) 

Which of the following commands is used to change options and positional parameters for a running Bash? 

A. history 

B. set 

C. bashconf 

D. setsh 

E. envsetup 

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Q10. - (Topic 2) 

Which of the following commands lists all currently installed packages when using RPM package management? 

A. yum --query --all 

B. yum --list --installed 

C. rpm --query --all 

D. rpm --list –installed 

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