NEW QUESTION 1
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 diskwrites 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: B

NEW QUESTION 2
CORRECT TEXT
Which command is used to add an empty group to the system? (Specify ONLY the command without any path or parameters.)

• A.

Answer: groupadd/usr/sbin/groupadd

NEW QUESTION 3
CORRECT TEXT
Which option in the /etc/ntp.conf file specifies an external NTP source to be queried for time information? (Specify ONLY the option without any values or parameters.)

• A.

Answer: server

NEW QUESTION 4
CORRECT TEXT
What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

• A.

Answer: menu.lstgrub.confgrub.cfg

NEW QUESTION 5
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.

Answer: BDE

NEW QUESTION 6
What is the maximum niceness value that a regular user can assign to a process with the nice command when executinga new process?

• A. 9
• B. 19
• C. 49
• D. 99

Answer: B

NEW QUESTION 7
Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.)

• A. find /tmp -uid root -print
• B. find -path /tmp -uid root
• C. find /tmp -user root -print
• D. find/tmp -user root
• E. find -path /tmp -user root –print

Answer: CD

NEW QUESTION 8
What is the purpose of the iconv command?

• A. It converts bitmap images from one format to another such as PNG to JPEG.
• B. It verifies that the root directory tree complies to all conventions from the Filesystem Hierarchy Standard (FHS).
• C. It displays additional meta information from icon files ending in .ico.
• D. It changes the mode of an inode in the ext4 file system.
• E. It converts files from one character encoding to another.

Answer: E

NEW QUESTION 9
What is true regarding TCP port 23?

• A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used.
• B. Port 23 is the well known port for the SSH service which provides secure logins.
• C. Port 23 is the well known port for the rlogin service which is SSL secured by default.
• D. Port 23 is the well known port for the system login services which are encrypted when the user runs the starttls command in his login shell.

Answer: A

NEW QUESTION 10
When using rpm --verify to check files created during the installation of RPM packages, which ofthe following information is taken into consideration? (Choose THREE correct answers.)

• A. Timestamps
• B. MD5 checksums
• C. Inodes
• D. File sizes
• E. GnuPG signatures

Answer: ABD

NEW QUESTION 11
CORRECT TEXT
Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.)

• A.

Answer: cmdline/proc/cmdline

NEW QUESTION 12
Which of the following commands creates an ext3 filesystem on /dev/sdb1? (Choose TWO correct answers.)

• A. /sbin/mke2fs -j /dev/sdb1
• B. /sbin/mkfs -t ext3 /dev/sdb1
• C. /sbin/mkfs -c ext3 /dev/sdb1
• D. /sbin/mke3fs -j/dev/sdb1

Answer: AB

NEW QUESTION 13
CORRECT TEXT
Which command is used to sync the hardware clock to the system clock? (Specify ONLY the command without any path or parameters.)

• A.

Answer: hwclock/sbin/hwclock/usr/sbin/hwclock

NEW QUESTION 14
After issuing:
function myfunction { echo $1 $2 ; }
in Bash, which output does:
myfunction A B C
Produce?

• A. A B
• B. A B C
• C. A C
• D. B C
• E. C B A

Answer: A

NEW QUESTION 15
CORRECT TEXT
Which option to the yum command will update the entiresystem? (Specify ONLY the option name without any additional parameters.)

• A.

Answer: updateupgrade

NEW QUESTION 16
Which of the following settingsfor umask ensures that new files have the default permissions -rw-r----- ?

• A. 0017
• B. 0640
• C. 0038
• D. 0027

Answer: D

NEW QUESTION 17
Which of the following is observed and corrected by a NTP client?

• A. The skew in time between the system clock and the hardware clock.
• B. The skew in time between the system clock and the reference clock.
• C. Changes in the time zone of the current computer's location.
• D. Adjustments needed to support Daylight Saving Time.

Answer: B

NEW QUESTION 18
Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

• A. sshd
• B. ssh-agent
• C. ssh-keygen
• D. ssh-add

Answer: B

NEW QUESTION 19
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: B

NEW QUESTION 20
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: AD

NEW QUESTION 21
Which of the following commands lists all currently installedpackages when using RPM package management?

• A. yum --query --all
• B. yum --list --installed
• C. rpm --query --all
• D. rpm --list –installed

Answer: C

NEW QUESTION 22
Which of the following are syslog facilities? (Choose TWO correct answers.)

• A. local7
• B. mail
• C. advanced
• D. postmaster
• E. remote

Answer: AB

NEW QUESTION 23
CORRECT TEXT
In an xinetd configuration file, which attribute specifies the network address that will be used to provide the service?

• A.

Answer: bindinterface

NEW QUESTION 24
What is the default nice level when a process is started using the nice command?

• A. -10
• B. 10
• C. 20

Answer: B

NEW QUESTION 25
How can the existing environment variable FOOBAR be suppressedfor the execution of the script./myscript only?

• A. unset -v FOOBAR;./myscript
• B. set -a FOOBAR="";./myscript
• C. env -u FOOBAR./myscript
• D. env -i FOOBAR./myscript

Answer: C

NEW QUESTION 26
Which utility would be used to change how often a filesystem check is performed on an ext2 filesystem without losing any data stored on that filesystem?

• A. mod2fs
• B. fsck
• C. tune2fs
• D. mke2fs
• E. fixe2fs

Answer: C

NEW QUESTION 27
Which configuration file would be edited to change the default options for outbound SSH sessions?

• A. /etc/ssh/sshd_config
• B. /etc/ssh/ssh
• C. /etc/ssh/client
• D. /etc/ssh/ssh_config
• E. /etc/ssh/ssh_client

Answer: D

NEW QUESTION 28
Which of the following commands will print the last 10 lines of a text file to the standard output?

• A. cat -n 10 filename
• B. dump -n 10 filename
• C. head -n 10 filename
• D. tail -n 10 filename

Answer: D

NEW QUESTION 29
CORRECT TEXT
On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)

• A.

Answer: /etc/shadow

NEW QUESTION 30
......