Linux Interview Questions for Senior Linux Admin

Linux Interview Questions for Senior Linux Admin

Guys below mentioned are the few questions which are common in interview pattern for CMMi level companies. Hope this helps you when you go rounds on with reputed companies like HP, ACCENTURE, MPHASIS, PATNI, YAHOO, IBM.

Q. What is the difference between NFS v3 and NFS v4 ? Configuration steps ?

Q. What are INODES? If I delete and recreate same file again will the inode number change or will remain same. Please explain why ?

Q. IF we type the command      # mkfs *  What will happen ?

Q. How to disable node in HPOV Java Console ?

Q. What is SOA in DNS ? IF deleted will DNS Work ?

Q. Suppose if you give proper commands to detect LUN and still LUN is not visible then how will you troubleshoot the problem ? 
   
Q. What are the daemons running in a Conga Cluster ? Name them with Port number used ?

Q. Steps to halt and start the Conga Cluster ? Services  stop and start order ?

Q. How to check which kernel you had boot from using TOP command ?

Q. How to upgrade ILO ?

Q. How to upgrade an Firmware ?

Q. Where do you make kernel related entries ?

Q. What are the commands in linux to disable a Firewall ?

Q. What does the 3 values of load average indicates ?

Q. Define a daemon ?

Q. Explain Boot process in linux ( Brief and my favorite )  ?

Q. How to create a daemon with shell scripting ?

Q. Can we use crontab to run a script every second ? if not why ? if yes ? How ?

Q. How to create a swap if you do not have free partition ?

Q. What is the default block size ( Chunk Size ) for a PV ?

Q. Difference between LVM 1 and LVM 2 ? 

Q. How do you configure a JBOSS Clustering ?  STEPS

Q. How does a conga cluster communicate ? Detailed explanation ?

Q. How do you stop all process except shell window ?  ( Q asked in Yahoo ) ?

Will submit the answers soon. .. Hope this helps many people....