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Q51. CORRECT TEXT – (Topic 3) 

Which signal is missing from the following command that is commonly used to instruct a daemon to reinitialize itself, including reading configuration files? 

killall -s _______ daemon 

Answer: HUP, SIGHUP, 1 

Q52. – (Topic 2) 

Which function key is used to start Safe Mode in Windows NT? 

A. F10 

B. F8 

C. F6 

D. Windows NT does not support Safe Mode 

Answer:

Q53. – (Topic 3) 

Which of the following files, located in the user home directory, is used to store the Bash history? 

A. .bash_history 

B. .bash_histfile 

C. .history 

D. .bashrc_history 

E. .history_bash 

Answer:

Q54. CORRECT TEXT – (Topic 1) 

Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.) 

Answer: cmdline, /proc/cmdline 

Q55. – (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. 

Answer:

Q56. – (Topic 3) 

Which of the following command sets the Bash variable named TEST with the content FOO? 

A. set TEST="FOO" 

B. TEST = "FOO" 

C. var TEST="FOO" 

D. TEST="FOO" 

Answer:

75. – (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 

Q57. – (Topic 3) 

Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter? 

A. sed '/bob/Bob' letter > newletter 

B. sed s/bob/Bob/ letter < newletter 

C. sed 's/bob/Bob' letter > newletter 

D. sed 's/bob/Bob/g' letter > newletter 

E. sed 's/bob, Bob/' letter > newletter 

Answer:

Q58. – (Topic 1) 

Which of the following information is stored within the BIOS? (Choose TWO correct answers.) 

A. Boot device order 

B. Linux kernel version 

C. Timezone 

D. Hardware configuration 

E. The system's hostname 

Answer: A,D 

Q59. – (Topic 3) 

Which character, added to the end of a command, runs that command in the background as a child process of the current shell? 

A. ! 

B. + 

C. & 

D. % 

E. # 

Answer:

Q60. – (Topic 3) 

Which of the following commands moves and resumes in the background the last stopped shell job? 

A. run 

B. bg 

C. fg 

D. back 

Answer:

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