Lpi 201-450 Online Practice Questions and Exam Preparation

Lpi 201-450 Online Questions & Answers

• Question 71:

  How is the source code for the main Linux kernel modules distributed?

  A. It is included with the Linux kernel source code.
  B. The kernel modules are downloaded on demand as they are used during compilation.
  C. The kernel modules have their own release cycle and can be maintained separately from the Linux kernel source.
  D. It is provided as a separate download alongside the Linux kernel source code of the same version.
  A. It is included with the Linux kernel source code.

• Question 72:

  How can the label root be added to the ext4 filesystem on /dev/sda1?

  A. relabel /dev/sda1 root
  B. tune2fs -L root /dev/sda1
  C. echo 'root' > /proc/fs/sda1/label
  D. labelfs --device /dev/sda1 root
  B. tune2fs -L root /dev/sda1

• Question 73:

  In the following output, what percentage of time was the CPU waiting for pending I/O?

  # vmstat 1 100 procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0 0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0

  0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0 0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0

  B. 100
  C. 35.9
  D. 57.7
  E. 36.6
  A

• Question 74:

  A correctly formatted entry has been added to /etc/hosts.deny to prevent certain clients from connecting to a service but this is having no effect. What could be the cause of this? (Choose TWO correct answers.)

  A. tcpd needs to be sent the HUP signal.
  B. The service needs to be restarted.
  C. The machine needs to be restarted.
  D. There is a conflicting entry in /etc/hosts.allow.
  E. The service does not support tcpwrapper.
  D. There is a conflicting entry in /etc/hosts.allow.
  E. The service does not support tcpwrapper.

• Question 75:

  Consider the following /etc/fstab file:

  /dev/hda1 swap swap defaults 0 0

  /dev/hda2 / ext2 defaults 1 1

  /dev/hda3 /home ext2 defaults 1 2

  none /proc proc defaults 0 0

  /dev/sdb1 /media/usb0 vfat user,noauto 0 0

  What is one of the possible commands that an ordinary (non-root) user can use to mount the /dev/sdb1 partition on the /media/usb0 mount point? (Please enter the command with all parameters and/or options but without any file system type

  options.)

  mount /dev/sdb1

• Question 76:

  What component of a system does smartd monitor?

  A. CPU
  B. RAM
  C. Hard drives
  D. Ethernet traffic
  C. Hard drives

• Question 77:

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

  A. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile
  B. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile
  C. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile
  D. touch -5G /tmp/swapfile; swapon /tmp/swapfile
  E. mkswap /tmp/swapfile 512000; swapon /tmp/swapfile
  C. dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile

• Question 78:

  Which command is used to unload a single module currently loaded by the kernel without unloading any modules that it depends upon? (Specify the command with or without path information)

  rmmod

• Question 79:

  What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

  A. maxcpus=1
  B. usecpus=1
  C. smpcpus=1
  D. vcpumx=1
  A. maxcpus=1

• Question 80:

  Which sub command to crypsetup shows information about an encrypted LUKS partition?

  A. luksDump
  B. luksInfo
  C. luksDebug
  D. luksLS
  E. luksShow
  A. luksDump