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NEW QUESTION 73
Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)
- A. resolv
- B. files
- C. remote
- D. dns
- E. hosts
Answer: B,D
NEW QUESTION 74
What is the effect of the egrep command when the -v option is used?
- A. It changes theoutput order showing the last matching line first.
- B. It shows the command's version information.
- C. It only outputs non-matching lines.
- D. It enables color to highlight matching parts.
Answer: C
NEW QUESTION 75
Which of the following commands can be used to limit the amount of memory a user may use?
- A. ulimit
- B. chage
- C. umask
- D. usermod
- E. passwd
Answer: A
NEW QUESTION 76
CORRECT TEXT
Which command displays a list of allbackground tasks running in the current shell? (Specify ONLY the command without any path or parameters.)
Answer:
Explanation:
jobs
NEW QUESTION 77
The output of the program date should be saved in the variable actdat. What is the correct statement?
- A. date | actdat
- B. set actdat='date'
- C. actdat=`date`
- D. actdat=date
- E. date > $actdat
Answer: C
NEW QUESTION 78
How many fields are in a syntactically correct line of /etc/fstab?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: C
Explanation:
Explanation
NEW QUESTION 79
Which of the following commands updates the linker cache of shared libraries?
- A. mkcache
- B. ldconfig
- C. mkldconfig
- D. soconfig
- E. lddconfig
Answer: B
NEW QUESTION 80
Which of the following commands will help identify a broken router between the local and the remote machine?
- A. traceroute
- B. nslookup
- C. ps
- D. netstat
- E. ifconfig
Answer: C
NEW QUESTION 81
What is the output of the following command?
echo "Hello World" | tr -d aieou
- A. eoo
- B. Hll Wrld
- C. eoo Hll Wrld
- D. Hello World
Answer: B
NEW QUESTION 82
CORRECT TEXT
What is the default name of the configuration file for the Xorg X11 server? (Specify the file name only without any path.)
Answer:
Explanation:
xorg.conf
NEW QUESTION 83
What is the difference between the commands test -e path and test -f path?
- A. They are equivalent options with the same behavior.
- B. The -f option tests for a regular file. The -e option tests for an empty file.
- C. The -f option tests for a regular file. The -e option tests for an executable file.
- D. Both options check the existence of the path. The -f option also confirms that it is a regular file.
Answer: D
NEW QUESTION 84
After modifying GNU GRUB's configuration file, which command must be run for the changes to take effect?
- A. No action is required
- B. kill -HUP $(pidof grub)
- C. grub-install
- D. grub
Answer: A
NEW QUESTION 85
What does the exit status 0 indicate about a process?
- A. The process finished in time.
- B. The process ended without any problems.
- C. The process couldn't finish correctly.
- D. The process waited for an input but got none.
- E. The process was terminated by the user.
Answer: B
NEW QUESTION 86
Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?
- A. chmod 775 /bin/foo
- B. chmod o+rwx,a+rx /bin/foo
- C. chmod 577 /bin/foo
- D. chmod u=rwx,go=rx /bin/foo
Answer: D
NEW QUESTION 87
What is a purpose of an SSH host key?
- A. It provides the server's identity information to connecting SSH clients.
- B. It is the root key by which all user SSH keys must be signed.
- C. It must be sent by any SSH client in addition to a user key in order to identify the client's host.
- D. It authenticates any user that logs into a remote machine from the key's host.
- E. It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.
Answer: A
NEW QUESTION 88
Which command will display the last line of the file foo.txt?
- A. tail -n 1 foo.txt
- B. tail foo.txt
- C. head -n 1 foo.txt
- D. last -n 1 foo.txt
Answer: A
NEW QUESTION 89
What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?
- A. /proc/sys/kernel/init
- B. /boot/init
- C. /sbin/init
- D. /etc/rc.d/rcinit
- E. /lib/init.so
Answer: C
NEW QUESTION 90
How can the normal output of a command be written to a file while discarding the error output?
- A. command >file 2>/dev/null
- B. command >2>file 1&>/dev/null
- C. command > /dev/null 2&>1 output
- D. command < output > /dev/null
- E. command > discard-error > file
Answer: A
NEW QUESTION 91
In order to display all currently mounted filesystems, which of the following commands could be used? (Choose TWO correct answers.)
- A. mount
- B. free
- C. cat /proc/self/mounts
- D. cat /proc/filesystems
- E. lsmounts
Answer: A,C
NEW QUESTION 92
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?
- A. which
- B. query
- C. dirname
- D. whereis
- E. basename
Answer: D
NEW QUESTION 93
What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)
- A. The locate database is updated to drop files owned by bob.
- B. The user bob is removed from the system's user database.
- C. In case bob was the last member of a group, that group is deleted.
- D. The user bob's home directory is removed.
- E. All files owned by bob are remove from all mounted filesystems.
Answer: B,D
NEW QUESTION 94
What is the output of the following command sequence? for token in a b c; do
echo -n "$token ";
done
- A. "a " "b " "c "
- B. a b c
- C. token token token
- D. anbncn
- E. abc
Answer: B
NEW QUESTION 95
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