Lpi LPI Certifications 201-450 Questions & Answers

• Question 51:

  What is the purpose of a system mount unit?

  A. It is used by the command systemd-mount and allows users to mount partitions to mount points of their choice

  B. It is used only to mount network file systems to local mount points. It cannot be used for local media

  C. It is created by the command systemd-fstab-generator to integrate entries from /etc/fstab into the system boot process

  D. It is used by the command mount when using system to mount and unmount file systems

  Correct Answer: A

• Question 52:

  Which of the following is a userspace application used to modify EFI entries on a Linux system?

  A. efieditor

  B. configefi

  C. efimanager

  D. efiboottmgr

  E. efibootedit

  Correct Answer: D

• Question 53:

  Which of the following configuration files are used by tcpwrapper?

  A. /etc/tcpd.allow and etc/tcpd.deny

  B. /etc/tcpwrapper.allow and /etc/tcpwrapper.deny

  C. /etc/hosts.allow and /etc/hosts.deny

  D. /etc/service.allow and /etc/service.deny

  Correct Answer: C

• Question 54:

  A web application server contains 64GB of RAM and two swap partitions on normal hard disk drives, each with a size of 64 GB. Within the last month, the average number of user sessions on this server has grown by 20 percent. At the same time, the average usage of RAM increased from 65 to 75 percent, while the swap space is almost not used at all. It is expected that the number of user sessions will continue to increase by about 15 to 20 percent each month.

  Which of the following reactions would be appropriate in response to these observations? (Choose two.)

  A. Delay any hardware upgrade until there is a significant consumption of swap space to ensure an efficient usage of the available hardware

  B. Create a RAID 1 device on the two swap partitions to avoid data loss in case swap space has to be used in the future

  C. Consider the installation of an additional application server to distribute the load if the expected growth continues over several months

  D. Move the web application's scripts and content a ram disk in order to ensure fast access and to avoid the need for swap space

  E. Update the hardware to increase the amount of available RAM to avoid using swap space

  Correct Answer: CE

• Question 55:

  A Linux server running systemd booted to rescue.target for maintenance. Which commands are used to restore the server to its usual target? (Choose two.)

  A. telinit 0

  B. systemctl default

  C. sync

  D. systemctl emergency

  E. systemctl reboot

  Correct Answer: AB

• Question 56:

  Which of the following commands shows capabilities and usable frequencies for the wireless interface wlan0?

  A. iw phy pyh0 info

  B. iw dev wlan0 info

  C. iw dev wlan0 show

  D. iw phy wlan0 show

  E. iw phy0 show

  Correct Answer: A

• Question 57:

  What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

  

  A. One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy

  B. The spare disk /dev/sda1 is used to restore full redundancy after the current recovery

  C. The information [UU_] means, that the raid is missing one disk and is not fully redundant

  D. The device is using version 1.2 metadata to allow LILO and GRUB Legacy to use /dev/md0 as the boot partition. This would not have been necessary with GRUB2

  E. The information [3/2] means that 3 RAID disks belong to the array and 2 disks are spare. Together they equal the number of available disks

  Correct Answer: AC

• Question 58:

  After manually compiling and installing a new kernel, what has to be done regarding the initramfs?

  A. To initramfs is independent of the kernel and should not be modified unless the hardware configuration of the machine has changed

  B. Since the initramfs contains kernel modules, a new initramfs must be built for the new kernel

  C. During the compilation of the Linux kernel, a new initramfs is built automatically. The new initramfs only needs to be installed

  D. The system should be restarted since the initramfs reconfigures itself for the new kernel during the startup of the system

  Correct Answer: C

• Question 59:

  Which of the following commands restores only those files containing lpi in their name from the archive lpifiles.tar.gz?

  A. tar xvzf lpifiles.tar.gz --wildcards `*lpi*'

  B. tar xvzwf lpifiles.tar.gz `*lpi*'

  C. tar -xvfz lpifiles.tar.gz --deep `*lpi*'

  D. tar -xvzf lpifiles.tar.gz --subdirs `*lpi*'

  E. tar xvzf lpifiles.tar.gz --globbing `*lpi*'

  Correct Answer: A

• Question 60:

  Which of the following are common backup systems used in Linux? (Choose TWO correct answers.)

  A. Amanda

  B. Bacula

  C. DrBackup

  D. BREWBackup

  E. SARcheck

  Correct Answer: AB