The following interview questions are provided by SOUMYA ADHIKARI, a Redhat Certified Engineer and Linux Server Hardening Enthusiast. He faced these questions in an interview for a Linux System Admin Job.  Thanks a lot on behalf of AEM for sharing theses questions… 1. Tell me something about Linux.2. What is the difference between UNIX & Linux?3. Explain the directory hierarchy of Linux.4. How to publish a directory A/ and /Z through httpd (Selinux is Disabled)?5. What
Q:1 What is the boot sequence of a linux server ?Q:2 What is Hard disk driver or Hard disk module, are they different or same. Explain.Q:3 How you will get the WWN number of HBA card installed in LinuxQ:4 How to check RHEL Version ?Q:5 What is network bonding and different levels of bonding ?Q:6 How to share a linux resource on windows machine ?Q:7 How to scan newly assigned SAN’S LUN on Linux server
1. Change to root user : sudo -i OR su - 2. Install Adobe YUM Repository RPM package rpm -ivh http://linuxdownload.adobe.com/adobe-release/adobe-release-x86_64-1.0-1.noarch.rpm rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-adobe-linux 3. Update Repositories yum check-update 4. Install flashplayer yum install flash-plugin alsa-plugins-pulseaudio libcurl 5. Verify that the Flash Player Plugin is working Open Mozilla Firefox and write about:plugins on address bar. You shoud see the following output : Shockwave Flash File: libflashplayer.so Path: /usr/lib64/flash-plugin/libflashplayer.so Version: 11,2,202,429 State: Enabled (STATE_VULNERABLE_UPDATE_AVAILABLE) Shockwave Flash

What is IPMI ?

IPMI ( Intelligent Platform Management Interface ) : It  is a remote hardware health monitoring and management system that defines interfaces for use in monitoring the physical health of servers. IPMI provides a way to monitor & manage a server system that may be powered off or unresponsive by using a network connection to the hardware rather than to an OS. IPMI functions independently of the OS to allow system admins to manage a system
The w command shows the following information about each user and their process(s) on the system: USER - User name. TTY - Terminal type such as pts/1 or console. FROM - The remote host name or IP address. LOGIN@ - Login time. IDLE - Idle time. JCPU - The JCPU time is the time used by all processes attached to the tty. PCPU - The PCPU time is the time used by the current process
1. What are the important configuration files for DNS server ? 2. What is BIND ? 3. What is the role of DNS ? 4. On which port DNS server works ? 5. What is Round Robin DNS?6. What is Root name server?7.  Explain "TTL".8. Give some examples of DNS Records.9. What are "HINFO and TXT Records"?10. What is Dynamic DNS?11. What is Split DNS?12. What is the difference between Recursive Query & Iterative Query?13.
The following interview questions are provided by SYED PARVEZ ZAFAR, RHCE.Thanks a lot on behalf of AEM for sharing theses questions... 1.What do you mean By Cloud Computing ?2.Explain the Booting Process of Linux ?3.What is the size of MBR (Master Boot Record)?4.What is RAID 6?5.What is swap and why it is used?6.What is the filesystem in Linux?7.What is the difference between ext3 and ext4 filesystem?8.What is cache?9.What is VLAN ? Can you Configure Routers and
Disk space can be restricted by implementing disk quotas which alert a system administrator before a user consumes too much disk space or a partition becomes full.Disk quotas can be configured for individual users as well as user groups.In addition, quotas can be set not just to control the number of disk blocks consumed but to control the number of inodes.The quota RPM must be installed to implement disk quota. To implement disk quotas, use the