NEW QUESTION 1
What is the purpose of the command udevadm monitor?

• A. It listens to kernel events produced by a udev rule and print information to the console.
• B. It monitors the /dev directory for new devices.
• C. It monitors the udev process and prints performance statistics to the console.
• D. It communicates with D-Bus to setup new devices.

Answer: A

NEW QUESTION 2
Which /etc/hosts.allow entries will permit access to sshd for users from the 192.168.1.0/24 subnet? (Choose TWO correct answers.)

• A. sshd : 192.168.1.
• B. sshd : 192.168.1
• C. sshd : 192.168.1.0 netmask 255.255.255.0
• D. sshd : 192.168.1.0/255.255.255.0
• E. sshd : 192.168.1.0

Answer: AD

NEW QUESTION 3
Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/etc/inittab

NEW QUESTION 4
Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.)

• A. source
• B. src
• C. dest
• D. src or dst
• E. both

Answer: BD

NEW QUESTION 5
Which file contains the text message that is displayed after logging into the console? (Specify the full name of the file, including path.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/etc/motd

NEW QUESTION 6
What mechanism does collectd use to gather monitoring information on systems?

• A. It uses a library of plugins.
• B. A master server connects to a collectd service on each machine to retrieve the information.
• C. It collects its own information on each server and sends that to a master server.
• D. It makes SNMP queries to the clients being monitored.

Answer: A

NEW QUESTION 7
Which of the following are common Linux filesystem types used for root partitions? (Choose THREE correct answers.)

• A. ext4
• B. VFAT
• C. NTFS
• D. XFS
• E. Btrfs

Answer: ADE

NEW QUESTION 8
What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?

• A. lvsnap
• B. lvsnapshot
• C. lvcreate
• D. lvcopy
• E. lvclone

Answer: C

NEW QUESTION 9
What is a key difference between a zImage and bzImage kernel image?

• A. zImage is compressed using gzip, bzImage is compressed using bzip2.
• B. zImage is for 2.6 series kernels, bzImage is for 3.x series kernels.
• C. zImage is limited to 64k, bzImage has no such restriction.
• D. zImage gets loaded completely into low memor
• E. bzImage will load into high memory once low memory is full.

Answer: D

NEW QUESTION 10
A server requires a GRUB2 boot option which will always boot to runlevel 1. Which line of a GRUB2 configuration file starts the beginning of the settings needed to make this new choice available?

• A. initrd
• B. linux
• C. menuentry
• D. runlevel

Answer: B

NEW QUESTION 11
What does a 0 in the last field (fsck order) of /etc/fstab indicate about the filesystem?

• A. The filesystem should be checked before filesystems with higher values.
• B. The filesystem should be checked after filesystems with higher values.
• C. The filesystem check counter is ignored.
• D. The filesystem has been disabled from being checked and mounted on the system.
• E. The filesystem does not require an fsck check when being mounted.

Answer: E

NEW QUESTION 12
After changing the default runlevel in the SysV-init configuration file, the system boots in a different than intended runlevel. Where else could this different runlevel be defined?

• A. In the /etc/sysctl.conf
• B. In the boot loader configuration file
• C. In the /etc/runlevel file
• D. In the /boot/initramfs file
• E. In the /etc/rc.d/rc.local file

Answer: B

NEW QUESTION 13
In the following output, what is the 5 minute load average for the system?
# uptime
12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31

• A. 0.47
• B. 24.71
• C. 35.31
• D. There is no 5 minute interva
• E. It is some value between 0.47 and 24.71.
• F. There is no 5 minute interva
• G. It is some value between 24.71 and 35.31.

Answer: B

NEW QUESTION 14
Which of the following is an example path to a Linux software RAID array?

• A. /dev/raid0
• B. /dev/rd1
• C. /dev/pr0
• D. /dev/md1

Answer: D

NEW QUESTION 15
Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

• A. Bandwidth in both directions
• B. Number of nodes using the link
• C. Effective Latency
• D. Number of IPv4 and IPv6 packets
• E. Number of used TCP ports

Answer: AC

NEW QUESTION 16
Which of the following commands creates a Btrfs subvolume named volume in/mnt?

• A. btrfs subvolume add –n volume /mnt
• B. btrfs create subvolume /mnt volume
• C. btrfs-subvolume create /mnt/volume
• D. btrfs subvolume new volume /mnt
• E. btrfs subvolume create /mnt/volume

Answer: E

NEW QUESTION 17
What is the device name for the first SCSI tape drive on a system when used without automatic rewinding after each write operation? (Please specify the full path to the device.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
/dev/nst0

NEW QUESTION 18
A system with SysV-init has a service installed called apache2. Which file controls the start and stop of this service and is referenced by the various runlevel directories?

• A. /etc/init.d/apache2
• B. /etc/rc2.d/70apache2
• C. /etc/rc2.d/apache2
• D. /etc/rc2.d/apache2.start

Answer: A

NEW QUESTION 19
How can the kernel parameter for the maximum size of the shared memory segment (shmmax) be changed to 2GB (2147483648 Bytes) on a running system? (Choose TWO correct answers.)

• A. Edit /etc/shmmax and set the parameter to 2147483648.
• B. sysctl shmmax=2147483648
• C. sysctl kernel.shmmax=2147483648
• D. echo 2147483648 > /proc/sys/kernel/shmmax
• E. export kernel.shmmax=2147483648

Answer: CD

NEW QUESTION 20
A system has one hard disk and one CD writer which are both connected to SATA controllers. Which device represents the CD writer?

• A. /dev/hdb
• B. /dev/sdd
• C. /dev/scd1
• D. /dev/sr0
• E. /dev/sr1

Answer: D

NEW QUESTION 21
In capacity planning exercises, which tools assist in listing and identifying processes of interest? (Choose TWO correct answers.)

• A. acpid
• B. lsof
• C. pstree
• D. telinit

Answer: BC

NEW QUESTION 22
Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
lsof, /usr/bin/lsof

NEW QUESTION 23
In order to gather performance data with sar over a longer period of time, which command should be run periodically from cron?

• A. sa1
• B. sarmon
• C. sarec
• D. sadf
• E. sarcron

Answer: A

NEW QUESTION 24
What happens if the Linux kernel can't mount the root filesystem when booting?

• A. An error message is shown and the administrator is asked by the kernel to specify a valid root filesystem to continue the boot process.
• B. An error message is shown and the system reboots after a keypress.
• C. An error message is shown and the system boots in maintenance mode.
• D. An error message is shown showing which device couldn't be mounted or informing that init couldn't be found.
• E. An error message is shown stating that the corresponding kernel module couldn't be loaded.

Answer: D

NEW QUESTION 25
Where is the LILO boot loader code typically installed on a system with only a single Linux installation and no other operating systems?

• A. In the master boot record.
• B. In the boot sector.
• C. In the /boot directory.
• D. At the start of the kernel.

Answer: A

NEW QUESTION 26
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