Red Hat EX200 Online Practice Questions and Exam Preparation

Red Hat EX200 Online Questions & Answers

• Question 31:

  Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  # fdisk /dev/sda p (check Partition table) n (create new partition: press e to create extended partition, press p to create the main partition, and the extended partition is further divided into logical partitions) Enter +2G t l W partx -a /dev/sda partprobe mkswap /dev/sda8 Copy UUID swapon -a vim /etc/fstab UUID=XXXXX swap swap defaults 0 0 (swapon -s)

• Question 32:

  Configure autofs to automount the home directories of LDAP users as follows:

  host.domain11.example.com NFS-exports /home to your system.

  This filesystem contains a pre-configured home directory for the user ldapuser11 ldapuser11's home directory is host.domain11.example.com /rhome/ldapuser11 ldapuser11's home directory should be automounted locally beneath /rhome

  as /rhome/ldapuser11

  Home directories must be writable by their users

  ldapuser11's password is 'password'.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  vim /etc/auto.master /rhome /etc/auto.misc wq! # vim /etc/auto.misc ldapuser11 --rw,sync host.domain11.example.com:/rhome/ldpauser11 :wq! #service autofs restart service autofs reload chkconfig autofs on su -ldapuser11 Login ldapuser with home directory # exit

• Question 33:

  Configure

  a HTTP server, which can be accessed through http://station.domain40.example.com.

  Please

  download the released page from http://ip/dir/example.html.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  # yum install -y httpd # chkconfig httpd on # cd /var/www/html # wget http://ip/dir/example.html # cp example.com index.html # vim /etc/httpd/conf/httpd.conf NameVirtualHost 192.168.0.254:80 DocumentRoot /var/www/html/ ServerName station.domain40.example.com

• Question 34:

  Add an additional swap partition of 754 MB to your system.

  The swap partition should automatically mount when your system boots.

  Do not remove or otherwise alter any existing swap partitions on your system.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  fdisk -l fdisk -cu /dev/vda p n e or p select e default (first): enter default (last): enter n default(first): enter default(first): +754M t (1-5)

  l: 82 p w #reboot #mkswap /dev/vda5 vim /etc/fstab /dev/vda5 swap swap defaults 0 0 wq mount -a swapon -a swapon -s

• Question 35:

  Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  # cat /etc/testfile | while read line; do echo $line | grep abcde | tee -a /tmp/testfile done OR grep `abcde' /etc/testfile > /tmp/testfile

• Question 36:

  Add a new logical partition having size 100MB and create the data which will be the mount point for the new partition.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  1.

  Use fdisk /dev/hda-> To create new partition.

  2.

  Type n ->For New partitions

  3.

  It will ask for Logical or Primary Partitions. Press l for logical.

  4.

  It will ask for the Starting Cylinder: Use the Default by pressing Enter Keys

  5.

  Type the size: +100M you can specify either Last cylinder of size here.

  6.

  Press P to verify the partitions lists and remember the partitions name.

  7.

  Press w to write on partitions table.

  8.

  Either Reboot or use partprobe command.

  9.

  Use mkfs -t ext3 /dev/hda?

  OR

  1.

  mke2fs -j /dev/hda? ->To create ext3 filesystem.

  2.

  vi /etc/fstab

  3.

  Write:

  /dev/hda? /data ext3 defaults 0 0

  4.

  Verify by mounting on current sessions also:

  mount /dev/hda? /data

• Question 37:

  We are working on /data initially the size is 2GB. The /dev/test0/lvtestvolume is mount on /data. Now you required more space on /data but you already added all disks belong to physical volume. You saw that you have unallocated space around 5 GB on your harddisk. Increase the size of lvtestvolume by 5GB.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  1.

  Create a partition having size 5 GB and change the syste id '8e'.

  2.

  use partprobe command

  3.

  pvcreate /dev/hda9 Suppose your partition number is hda9.

  4.

  vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group.

  5.

  lvextend -L+5120M /dev/test0/lvtestvolume

  6.

  verify using lvdisplay /dev/test0/lvtestvolume.

• Question 38:

  Add admin group and set gid=600

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  # groupadd -g 600 admin

• Question 39:

  Adjust the size of the Logical Volume.

  Adjust the size of the vo Logical Volume, its file system size should be 290M. Make sure that the content of this system is complete.

  Note: the partition size is rarely accurate to the same size as required, so in the range 270M to 320M is acceptable.

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  Addition df -hT lvextend -L +100M /dev/vg0/vo Lvscan xfs_growfs /home/ //home is the mounted directory of the LVM, this step just need to do in the practice environment, and test EXT4 does not need this step. resize2fs /dev/vg0/vo// use this command to update in examination. df -hT OR Subtraction e2fsck -f/dev/vg0/vo umount /home resize2fs /dev/vg0/vo // the final required partition capacity is 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo/home df -hT

• Question 40:

  Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).

  Correct Answer. Check the anser in explanation.
  Check the anser in explanation.

  ---

  if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile /etc/fstab: /swapfile swap swap defaults 0 0 mount -a