Unix administrator interview questions Linux and Network Administrators too can benefit from this

These are interview questions asked in HP,IBM,Sun Microsystems to one of the blog reader. I thank him for sending & sharing these interview questions.

1.how do u find the CPU utilization ?
2.how do u find the number of CPU have in the machine ? what are the commands to add CPU ? What is core? What is quad core,dual core ?
3.if you are using Veritas volume manager,how do u find the maximum volume size you can create in the disk ?
4.if your veritas product licence expired and you want your system as usual or you want revert back?
how do you do ?
5.what is hard link and what is softlink?
6.what is difference between NAS and SAN?
7.how do you make NIS from the scratch ? difference between NIS +
8 some unix commands,in the case of solaris ,they willask "meta commands" for volume ?
7 useradd ,delete commands all parameters?
8.will ask about present project and the problem faced on the projects ?
9.best achievement ? how many people working under you ?
10. steps for adding disk,creating swap,increasing volume size ?
11.what are the steps follows for security purpose ?how do u find how many people using root password ?
12.what are the key things holding for disaster kit ?
13 what about back up job ?
14 what are the server using ?latest server ? versions of the OS ? difference between the previous version ?

in SAN few questions.they start with some general questions like

1 what is the future of SAN ?what is OSN ?
2 why do you want become SAN admin ? why people are still using NAS ?
3.give me some hardware name ,you are using ?
4.How do you give initial planning ,estimate to procure these storage hardware ?
5.What are the factors you consider while deploying storage solutions
6.What are your experience interacting with Customers & solving their storage issues?

More interview questions will be updated daily so email roger.smithson@gmail.com if you need more questions .