Red Hat Red Hat Certifications EX200 Questions & Answers

• Question 51:

  Notes:

  NFS NFS instructor.example.com:/var/ftp/pub/rhel6/dvd

  Correct Answer: Check the anser in explanation.

  YUM http://instructor.example.com/pub/rhel6/dvd ldap http//instructor.example.com/pub/EXAMPLE-CA-CERT Install dialog package. yum install dialog

• Question 52:

  Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254. Make successfully resolve to server1.example.com.

  Correct Answer: Check the anser in explanation.

  nameserver is specified in question,

  1.

  Vi /etc/resolv.conf nameserver 192.168.0.254

  2.

  host server1.example.com

• Question 53:

  Search a String

  Find out all the columns that contains the string seismic within /usr/share/dict/words, then copy all these columns to /root/lines.tx in original order, there is no blank line, all columns must be the accurate copy of the original columns.

  Correct Answer: Check the anser in explanation.

  grep seismic /usr/share/dict/words> /root/lines.txt

• Question 54:

  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.

  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 55:

  Create a Shared Directory.

  Create a shared directory /home/admins, make it has the following characteristics:

  /home/admins belongs to group adminuser

  This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.

  Correct Answer: Check the anser in explanation.

  mkdir /home/admins chgrp -R adminuser /home/admins chmodg+w /home/admins chmodg+s /home/admins

• Question 56:

  Create a user named alex, and the user id should be 1234, and the password should be alex111.

  Correct Answer: Check the anser in explanation.

  # useradd -u 1234 alex # passwd alex alex111 alex111 OR echo alex111|passwd -stdin alex

• Question 57:

  According the following requirements to create a local directory /common/admin.

  This directory has admin group.

  This directory has read, write and execute permissions for all admin group members.

  Other groups and users don't have any permissions.

  All the documents or directories created in the/common/admin are automatically inherit the admin group.

  Correct Answer: Check the anser in explanation.

  mkdir -p /common/admin chgrp admin /common/admin chmod 2770 /common/admin

• Question 58:

  Add admin group and set gid=600

  Correct Answer: Check the anser in explanation.

  # groupadd -g 600 admin

• Question 59:

  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.

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

• Question 60:

  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.

  # 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