Red Hat EX200 Online Practice Questions and Exam Preparation

Red Hat EX200 Online Questions & Answers

• Question 61:

  Configure NTP.

  Configure NTP service, Synchronize the server time, NTP server: classroom.example.com

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

  ---

  Configure the client: Yum -y install chrony Vim /etc/chrony.conf Add: server classroom.example.com iburst Start: systemctl enable chronyd systemctl restart chronyd Validate: timedatectl status

• Question 62:

  /data Directory is shared from the server1.example.com server. Mount the shared directory that:

  a.

  when user try to access, automatically should mount

  b.

  when user doesn't use mounted directory should unmount automatically after 50 seconds.

  c.

  shared directory should mount on /mnt/data on your machine.

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

  ---

  1. vi /etc/auto.master /mnt /etc /auto.misc --timeout=50 vi /etc/auto.misc data -rw,soft,intr server1.example.com:/data service autofs restart chkconfig autofs on When you mount the other filesystem, you should unmount the mounted filesystem, Automount feature of linux helps to mount at access time and after certain seconds, when user unaccess the mounted directory, automatically unmount the filesystem. /etc/auto.master is the master configuration file for autofs service. When you start the service, it reads the mount point as defined in /etc/auto.master.

• Question 63:

  Make on data that only the user owner and group owner member can fully access.

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

  ---

  chmod 770 /data Verify using : ls -ld /data Preview should be like: drwxrwx--- 2 root sysadmin 4096 Mar 16 18:08 /data To change the permission on directory we use the chmod command. According to the question that only the owner user (root) and group member (sysadmin) can fully access the directory so: chmod 770 /data

• Question 64:

  Find all lines in the file /usr/share/dict/words that contain the string seismic. Put a copy of all these lines in their original order in the file /root/wordlist. /root/wordlist should contain no empty lines and all lines must be exact copies of the original lines in /usr/share/dict/words.

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

  ---

  grep seismic /usr/share/dict/words> /root/wordlist

• Question 65:

  Part 1 (on Node1 Server)

  Task 4 [Controlling Access to Files]

  Create collaborative directory /mnt/shares with the following characteristics:

  Group ownership of /mnt/shares should be sharegrp.

  The directory should be readable, writable and accessible to member of sharegrp but not to any other user. (It is understood that root has access to all files and directories on the system)

  Files created in /mnt/shares automatically have group ownership set to the sharegrp group.

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

  ---

  * [root@node1 ~]# mkdir -p /mnt/shares [root@node1 ~]# ls -lrt /mnt/ [root@node1 ~]# chgrp sharegrp /mnt/shares/ [root@node1 ~]# chmod 2770 /mnt/shares/ [root@node1 ~]# ls -lrt /mnt/ ### For Checking ### [root@node1 ~]# su - harry [harry@node1 ~]$ cd /mnt/shares/ [harry@node1 shares]$ touch harry [harry@node1 shares]$ logout [root@node1 ~]# su - natasha [natasha@node1 ~]$ cd /mnt/shares/ [natasha@node1 shares]$ touch natasha [natasha@node1 shares]$ ls -lrt -rw-rw-r--. 1 harry sharegrp 0 Mar 21 06:03 harry -rw-rw-r--. 1 natasha sharegrp 0 Mar 21 06:03 natasha

• Question 66:

  Upgrading the kernel as 2.6.36.7.1, and configure the system to Start the default kernel, keep the old kernel available.

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

  ---

  # cat /etc/grub.conf # cd /boot # lftp it # get dr/dom/kernel-xxxx.rpm # rpm -ivh kernel-xxxx.rpm # vim /etc/grub.conf default=0

• Question 67:

  SELinux must be running in the Enforcing mode.

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

  ---

  getenforce // Check the current mode of SELinux // SELinux runs in enforcing mode // Check getenforce 1 getenforce vim /etc/selinux/config selinux=enforcing // To temporarily enable SELinux wg sestatus

• Question 68:

  You have a domain named www.rhce.com associated IP address is 192.100.0.2. Configure the Apache web server by implementing the SSL for encryption communication.

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

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  vi /etc/httpd/conf.d/ssl.conf ServerName www.rhce.com DocumentRoot /var/www/rhce DirectoryIndex index.html index.htm ServerAdmin [email protected] SSLEngine on SSLCertificateFile /etc/httpd/conf/ ssl.crt/server.crt SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key cd /etc/httpd/conf 3 make testcert Create the directory and index page on specified path. (Index page can download from ftp://server1.example.com at exam time) service httpd start|restart chkconfig httpd on Apache can provide encrypted communications using SSL (Secure Socket Layer). To make use of encrypted communication, a client must request to https protocol, which is uses port 443. For HTTPS protocol required the certificate file and key file.

• Question 69:

  Part 1 (on Node1 Server)

  Task 10 [Configuring NTP/Time Synchronization]

  Configure your system so that it is an NTP client of utility.domain15.example.com

  The system time should be set to your (or nearest to you) timezone and ensure NTP sync is configured

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

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  * [root@node1 ~]# yum install chrony [root@node1 ~]# vim /etc/chrony.conf pool utility.domain15.example.com iburst [root@node1 ~]# systemctl enable chronyd [root@node1 ~]# systemctl restart chronyd [root@node1 ~]# systemctl status chronyd [root@node1 ~]# tzselect Please identify a location so that time zone rules can be set correctly. Please select a continent, ocean, "coord", or "TZ". 1) Africa 2) Americas 3) Antarctica 4) Asia 11) TZ - I want to specify the time zone using the Posix TZ format. # 4

  * Please select a country whose clocks agree with yours. 1) Afghanistan 18) Israel 35) Palestine 2) Armenia 19) Japan 36) Philippines 3) Azerbaijan 20) Jordan 37) Qatar 4) Bahrain 21) Kazakhstan 38) Russia 5) Bangladesh 22) Korea (North) 39) Saudi Arabia #? 5 The following information has been given: Bangladesh Therefore TZ='Asia/Dhaka' will be used. Is the above information OK? 1) Yes 2) No

  # 1 Asia/Dhaka [root@node1 ~]# chronyc sources -v ^? utility.domain15.example> 0 7 0 - +0ns[ +0ns] +/- 0ns

• Question 70:

  In the system, mounted the iso image /root/examine.iso to/mnt/iso directory. And enable automatically mount (permanent mount) after restart system.

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

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  mkdir -p /mnt/iso /etc/fstab: /root/examine.iso /mnt/iso iso9660 loop 0 0 mount -a mount | grep examine