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Q1. - (Topic 4)
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
A. chmod u=rwx,go=rx /bin/foo
B. chmod o+rwx,a+rx /bin/foo
C. chmod 577 /bin/foo
D. chmod 775 /bin/foo
Answer: A
Q2. - (Topic 3)
Which grep command will print only the lines that do not end with a / in the file foo?
A. grep '/$' foo
B. grep '/#' foo
C. grep -v '/$' foo
D. grep -v '/#' foo
Answer: C
Q3. - (Topic 3)
Which of the following shell redirections will write standard output and standard error output to a file named filename?
A. 2>&1 >filename
B. >filename 2>&1
C. 1>&2>filename
D. >>filename
E. 1&2>filename
Answer: B
Q4. - (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.)
A. Timestamps
B. MD5 checksums
C. Inodes
D. File sizes
E. GnuPG signatures
Answer: A,B,D
Q5. - (Topic 1)
Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct answers.)
A. shutdown -R 1 now
B. shutdown -single now
C. init 1
D. telinit 1
E. runlevel 1
Answer: C,D
Q6. - (Topic 2)
Which file should be edited to select the network locations from which Debian installation package files are loaded?
A. /etc/dpkg/dpkg.cfg
B. /etc/apt/apt.conf
C. /etc/apt/apt.conf.d
D. /etc/apt/sources.list
E. /etc/dpkg/dselect.cfg
Answer: D
Q7. - (Topic 1)
Which of the following options for the kernel's command line changes the systemd boot target to rescue.target instead of the default target?
A. systemd.target=rescue.target
B. systemd.runlevel=rescue.target
C. systemd.service=rescue.target
D. systemd.default=rescue.target
E. systemd.unit=rescue.target
Answer: E
Q8. - (Topic 3)
What is the purpose of the Bash built-in export command?
A. It allows disks to be mounted remotely.
B. It runs a command as a process in a subshell.
C. It makes the command history available to subshells.
D. It sets up environment variables for applications.
E. It shares NFS partitions for use by other systems on the network.
Answer: D
Q9. - (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: D
Q10. - (Topic 2)
After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?
A. kill -HUP $(pidof grub)
B. grub-install
C. grub
D. No action is required
Answer: D
Q11. - (Topic 3)
Which of the following characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?
A. <<
B. <|
C. !<
D. &<
Answer: A
Q12. - (Topic 1)
Which of the following commands will write a message to the terminals of all logged in users?
A. bcast
B. mesg
C. print
D. wall
E. yell
Answer: D
Q13. - (Topic 3)
Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?
A. magic
B. type
C. file
D. pmagic
E. hash
Answer: C
Q14. - (Topic 3)
Which shell command is used to continue background execution of a suspended command?
A. &
B. bg
C. cont
D. exec
E. :&
Answer: B
Q15. - (Topic 2)
Which of the following commands is used to update the list of available packages when using dpkg based package management?
A. apt-get update
B. apt-get upgrade
C. apt-cache update
D. apt-get refresh
E. apt-cache upgrade
Answer: A
Q16. - (Topic 3)
Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?
A. cat < myapp | cat > file1.log
B. myapp 0>&1 | cat > file1.log
C. myapp | cat > file1.log
D. myapp | tee file1.log
E. tee myapp file1.log
Answer: D
Q17. - (Topic 4)
Which of the following commands can be used to search for the executable file foo when it has been placed in a directory not included in $PATH?
A. apropos
B. which
C. find
D. query
E. whereis
Answer: C
Q18. - (Topic 1)
Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)
A. shutdown -r now
B. shutdown -r "rebooting"
C. telinit 6
D. telinit 0
E. shutdown -k now "rebooting"
Answer: A,C