201-450 Practice Test

201-450 Practice Test practice questions, page 4 of 5, with answer review and explanations.

Question 16

FILL BLANK - What keyword is missing in the following line from /etc/fstab in order to grant the user fred write access to the files in the vfat file system on /dev/sdb1: /dev/sdb1 /mnt/usbflash vfat defaults, _________=fred, umask=022, 0 0 (Specify ONLY the option name without any path or parameters.)

Question 17

Due to extreme system use, a Linux system requires some additional swap space. To initialize 5 GB of additional swap space, which combination of commands should be used?

  1. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile
  2. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile
  3. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile
  4. touch -5G /tmp/swapfile; swapon /tmp/swapfile
  5. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile

Question 18

What is the purpose of a system mount unit?

  1. It is used by the command systemd-mount and allows users to mount partitions to mount points of their choice
  2. It is used only to mount network file systems to local mount points. It cannot be used for local media
  3. It is created by the command systemd-fstab-generator to integrate entries from /etc/fstab into the system boot process
  4. It is used by the command mount when using system to mount and unmount file systems

Question 19

FILL BLANK - What command ensures that the file systems are written to disk after a lot of write operations? (Specify ONLY the command without any path or parameters.)

Question 20

What component of a system does smartd monitor?

  1. CPU
  2. RAM
  3. Hard drives
  4. Ethernet traffic