Red Hat EX200 Online Practice Questions and Exam Preparation

Red Hat EX200 Online Questions & Answers

• Question 1:

  Create a 512M partition, make it as ext4 file system, mounted automatically under /mnt/data and which take effect automatically at boot-start.

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

  ---

  # fdisk /dev/vda n +512M w # partprobe /dev/vda # mkfs -t ext4 /dev/vda5 # mkdir -p /data # vim /etc/fstab /dev/vda5 /data ext4 defaults 0 0 # mount -a

• Question 2:

  Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.

  Note: Partitions are seldom exactly the same size requested, so a size within the range of 260 MB to 320 MiB is acceptable.

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

  ---

  df -hT lvextend -L +100M /dev/vg0/vo lvscan xfs_growfs /home/ // home is LVM mounted directory Note: This step is only need to do in our practice environment, you do not need to do in the real exam resize2fs /dev/vg0/vo // Use this comand to update in the real exam df -hT OR e2fsck -f/dev/vg0/vo umount /home resize2fs /dev/vg0/vo required partition capacity such as 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo /home df –Ht

• Question 3:

  Part 1 (on Node1 Server)

  Task 7 [Accessing Linux File Systems]

  Find all the files owned by user natasha and redirect the output to /home/alex/files.

  Find all files that are larger than 5MiB in the /etc directory and copy them to /find/largefiles.

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

  ---

  [root@node1 ~]# find / -name natasha -type f > /home/natasha/files [root@node1 ~]# cat /home/natasha/files /var/spool/mail/natasha /mnt/shares/natasha [root@node1 ~]# mkdir /find [root@node1 ~]# find /etc -size +5M > /find/largefiles [root@node1 ~]# cat /find/largefiles /etc/selinux/targeted/policy/policy.31 /etc/udev/hwdb.bin

• Question 4:

  Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.

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

  ---

  Download the file to /tmp first grep [abcde] /tmp/testfile > /mnt/answer

• Question 5:

  Some users home directory is shared from your system. Using showmount -e localhost command, the shared directory is not shown. Make access the shared users home directory.

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

  ---

  1.

  Verify the File whether Shared or not ? : cat /etc/exports

  2.

  Start the nfs service: service nfs start

  3.

  Start the portmap service: service portmap start

  4.

  Make automatically start the nfs service on next reboot: chkconfig nfs on

  5.

  Make automatically start the portmap service on next reboot: chkconfig portmap on

  6.

  Verify either sharing or not: showmount -e localhost

  7.

  Check that default firewall is running on system?

  If running flush the iptables using iptables -F and stop the iptables service.

• Question 6:

  YUM repository has been provided at http://server.domain11.example.com/pub/x86_64/Server. Configure your system to use this location as a default repository.

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

  ---

  vim/etc/yum.repos/base.repo [base] name=base baseurl= http://server.domain11.example.com/pub/x86_64/Server gpgcheck=0 enable=1 Save and Exit Use yum list for validation, the configuration is correct if list the package information. If the Yum configuration is not correct then maybe cannot answer the following questions.

• Question 7:

  Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.

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

  ---

  # cp /etc/fstab /var/tmp/ # chgrp admin /var/tmp/fstab # setfacl -m u:user1:rwx /var/tmp/fstab # setfacl -m u:user2:--- /var/tmp/fstab # ls -l -rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab

• Question 8:

  Add users: user2, user3.

  The Additional group of the two users: user2, user3 is the admin group Password: redhat

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

  ---

  # useradd -G admin user2 # useradd -G admin user3 # passwd user2 redhat # passwd user3 redhat

• Question 9:

  Configure the permissions of /var/tmp/fstab

  Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:

  the file /var/tmp/fstab is owned by the root user.

  the file /var/tmp/fstab belongs to the group root.

  the file /var/tmp/fstab should not be executable by anyone.

  the user natasha is able to read and write /var/tmp/fstab.

  the user harry can neither write nor read /var/tmp/fstab.

  all other users (current or future) have the ability to read /var/tmp/fstab.

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

  ---

  cp -a /etc/fstab /var/tmp cd /var/tmp

  ls -l

  getfacl /var/tmp/fstab

  chmod ugo-x /var/tmp/fstab

  [ No need to do this, there won't be execute permission for the file by default]

  # setfacl -m u:natasha:rw /var/tmp/fstab # setfacl -m u:harry:0 /var/tmp/fstab(zero)

  [Read permission will be there for all the users, by default. Check it using ls -l /var/tmp/fstab] Verify by [ ls -la /var/tmp/fstab]

• Question 10:

  Configure a default software repository for your system.

  One

  YUM has already provided to configure your system on http://server.domain11.example.com/pub/x86_64/Server, and can be used normally.

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

  ---

  Yum-config-manager --add-repo=http://content.example.com/rhel7.0/x86-64/dvd” is to generate a file vim content.example.com_rhel7.0_x86_64_dvd.repo, Add a line gpgcheck=0 Yumcleanall Yumrepolist Almost 4305 packages are right, Wrong Yum Configuration will lead to some following questions cannot be worked out.