Q21. - (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.
Q22. - (Topic 3)
When running the command
sed -e "s/a/b/" /tmp/file >/tmp/file
While /tmp/file contains data, why is /tmp/file empty afterwards?
A. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.
B. The command sed did not match anything in that file therefore the output is empty.
C. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.
D. Redirection for shell commands do not work using the > character. It only works using the | character instead.
Q23. - (Topic 2)
When using rpm --verify to check files created during the installation of RPM packages, which of the following information is taken into consideration? (Choose THREE correct answers.)
B. MD5 checksums
D. File sizes
E. GnuPG signatures
Q24. - (Topic 4)
Which of the following settings for umask ensures that new files have the default permissions -rw-r----- ?
Q25. - (Topic 2)
Which file should be edited to select the network locations from which Debian installation package files are loaded?
Q26. - (Topic 3)
Which variable defines the directories in which a Bash shell searches for executable commands?
Q27. - (Topic 3)
Which of the following commands kills the process with the PID 123 but allows the process to "clean up" before exiting?
A. kill -PIPE 123
B. kill -KILL 123
C. kill -STOP 123
D. kill -TERM 123
Q28. - (Topic 2)
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)
A. To create RAID 9 arrays.
B. To dynamically change the size of logical volumes.
C. To encrypt logical volumes.
D. To create snapshots.
E. To dynamically create or delete logical volumes.
Q29. - (Topic 3)
Which of the following commands displays the contents of a gzip compressed tar archive?
A. gzip archive.tgz | tar xvf -
B. tar ztf archive.tgz
C. gzip -d archive.tgz | tar tvf -
D. tar cf archive.tgz
Q30. - (Topic 3)
What is the difference between the i and a commands of the vi editor?
A. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically.
B. i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.
C. i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line.
D. i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing.