Tanti Technology

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Multi-platform UNIX systems consultant and administrator in mutualized and virtualized environments I have 4.5+ years experience in AIX system Administration field. This site will be helpful for system administrator in their day to day activities.Your comments on posts are welcome.This blog is all about IBM AIX Unix flavour. This blog will be used by System admins who will be using AIX in their work life. It can also be used for those newbies who want to get certifications in AIX Administration. This blog will be updated frequently to help the system admins and other new learners. DISCLAIMER: Please note that blog owner takes no responsibility of any kind for any type of data loss or damage by trying any of the command/method mentioned in this blog. You may use the commands/method/scripts on your own responsibility. If you find something useful, a comment would be appreciated to let other viewers also know that the solution/method work(ed) for you.

Wednesday, 20 September 2017

RHCE Interview Questions and Answers


This article presents basic interview questions with answers for RHCE candidates.
Which version of RHEL officially supports LUKS encryption?
From version 6 or higher LUKS encryption is officially supported by RHEL.
What is the default virtualization technology for RHEL6 ?
Default virtualization technology is KVM.
Can you configure KVM Virtual machine on 32 bit system ?
No, KVM virtualization requires at least 64 bit system.
Which remote management service is allowed through the default firewall and by default installed in RHEL?
By default SSH is always installed in RHEL. SSH uses port 22 which is allowed through the default firewall rules.
Which standard directory is used by vsFTP server for file sharing ?
Default Standard directory for ftp is /var/ftp/pub.
What is default mode of SELinux during the installation of RHEL ?
·      In RHEL5 you have to choose the mode which you want.
·      From RHEL6 default mode is Enforcing during the installation.
However you can change the mode of SELinux after installation, only difference between RHEL5 and RHEL6 is that in RHEL5 asks you to choose the mode while RHEL6 does not let you to choose the mode during the installation.
Which standard directory is used by Apache web server for HTML files ?
standard directory for HTML files is /var/www/html
What is the default partition layout during the installation ?
Default partition Layout is the LVM.
Which necessary partition cannot be a part of logical volume group ?
boot partition cannot be a part of logical volume group. You must have create it as a regular partition.
Which partitions are recommended for custom layout of partition ?
·      /
·      /boot
·      /home
·      swap
What step during the installation could you take to prevent a program from creating temporary files that fill up the entire space ?
You can create a separate /tmp partition prevents a program from creating temporary files that fill up the entire filesystem.
What is the kickstart ?
kickstart is a installation method used in RHEL. A kickstart installation is started from a kickstart file, which contains the answers to all the questions in the installation program.
Name any of two third party distribution based on RHEL6 source code.
CentOS and Scientific Linux
Which Log file contains all installation message?

install.log.syslog file contains all messages that were generated during the installation.

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