Hi
Can u suggest vmware technical interview question & Answer ?
Thanks
What are you looking for? General info, a spokes person, general Q&A, a specific product? Please post more info...
Duncan
My virtualisation blog:
If you find this information useful, please award points for "correct" or "helpful".
Hello,
In either case you want them to know how the server boots. This will tell you if they just consider the system a Linux box or a real Virtualization Server with all its wonder.....
Best regards,
Edward L. Haletky
VMware Communities User Moderator
====
Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.
CIO Virtualization Blog: http://www.cio.com/blog/index/topic/168354
As well as the Virtualization Wiki at http://www.astroarch.com/wiki/index.php/Virtualization
You will want some specific questions and some open ended ones. The open ended ones will tell you if the person understands the concepts on top of just knowing about them from reading manuals.
For some topics whats important to YOU for the job role? You might want to ask a lot of questions about storage, or performance, installation or patching. For a presales role you might ask questions about licensing and the various flavors of ESX, questions about doing P2V conversions.See if they can explain resources pools and when you might want to use them. If you are after a troubleshooter grab some common problems and ask for how they might work through them.
As Duncan said, describe the role and more specific questions will become more obvious.
Considering awarding points if this is of use
This same question came up not too long ago. Check this discussion.
I will say is very much depend what type of role you looking, for architecture person, you may need have very strong technical in term of networking, storage, virtualization, OS and etc. For a sys admin, maybe you can lower down som expectation due to the organization structure of different environment. So, I will say is very depend on what you prefer.
Rolando
Thanks Pradeep for your post.
Will you please post some more documents over same.
As i googled lot but not able to get anything relevant at one place.
Your document is nice ..but need some more questions over Vmware. Its general one...which can be asked in general interviews over Vmware.
Thanks
How about this one.
It's your first day on the job, what would you do?
Here are some Vmware interview questions which were asked in third round of technical interview in IBM
1. Explain the physical topology of Virtual Infrastructure 3 Data Centre ?
2. How do you configure Clusters,Hosts,Resource Pools in VI3 ?
3. What are resource pools & whats the advantage of implementing them ?
4. Explain why Vmware ESX Server is preferred over Virtual Server or Workstation for enterprise implementation ?
5. In what different scenarios or methods can you manage a VI3 ?
6. Explain the difference between access through Virtual Infrastructure Client (vi client), Web access, Service Console access(ssh) ?
7. Explain advantages or features of Vmware Virtual Machine File System (VMFS) ?
8. What are the types of datastores supported in ESX3.0 ?
9. How can you configure these different types of datastores on ESX2.5 ?
10.What is Vmware Consolidate Backup (VCB) ? Explain your work exposure in this area ?
Juyst trawl the community for questions that people have asked and view the answer threads.
Some good ones are questions like 'ESX, or ESXi - Why?' - if they say ESX because ESXi is scaled down - end the interview immediately, if they say ESX, because it has a service console, ask them if they think VMware will ever get rid of the service console (in this case, ESX is the WRONG answer as it shows lack of awareness of the future of ESX)
Also, try 'should I host my VC on a physical or virtual?' - you do not need to have definitive answer, but should get them to argue a point.
e.g. if they say 'Virtual' give them 2 reasons why not and get them to contend it. If they say 'physical' give them 2 different reasons why virtual is better.
You don't want to employ someone who can answer the 1 liner questions with one word answers, you need someone who can give well thought through answers and have the ability to back them up.
Also . . they're probably reading this thread . .so know exactly what questions you're going to ask now anyway 😉
Hi Madhu,
You can find good interview questions in the following link
http://www2.isupportyou.net/2010/06/vmware-interview-questions-tips.html
And other aricles and videos related to Virtualization at http://www2.isupportyou.net/
If you like this answer please vote for me
Regards
Charan.B
VCP4, MCSE, SCSA
Administrator
isupportyou
Here are the few items for intereview questions
http://www.vmwarearena.com/2012/10/difference-between-vsphere-41-and.html
http://www.vmwarearena.com/2012/10/difference-between-esx-35-esx-40.html
http://www.vmwarearena.com/2012/08/vmware-interview-questions-answers.html
http://www.vmwarearena.com/2012/08/vmware-interview-questions-and-answers.html
http://www.vmwarearena.com/2012/07/vmware-interview-questions-and-answers_20.html
http://www.vmwarearena.com/2012/07/vmware-interview-questions-and-answers.html
What is the difference between Thick provision Lazy Zeroed, Thick provision Eager Zeroed and Thin provision?
Thick Provision Lazy Zeroed
Creates a virtual disk in a default thick format.
Space required for the virtual disk is allocated when the virtual disk is created.
Data remaining on the physical device is not erased during creation, but is zeroed out on demand at a later time on first write from the virtual machine.
Using the default flat virtual disk format does not zero out or eliminate the possibility of recovering deleted files or restoring old data that might be present on this allocated space.
You cannot convert a flat disk to a thin disk.
Thick Provision Eager Zeroed
A type of thick virtual disk that supports clustering features such as Fault Tolerance.
Space required for the virtual disk is allocated at creation time.
In contrast to the flat format, the data remaining on the physical device is zeroed out when the virtual disk is created.
It might take much longer to create disks in this format than to create other types of disks.
Thin Provision
It provides on on-demand allocation of blocks of data.
All the space allocated at the time of creation of virtual disk is not utilized on the hard disk, rather only the size with utilized data is locked and the size increases as the amount of data is increased on the disk.
With thin provisioning, storage capacity utilization efficiency can be automatically driven up towards 100% with very little administrative overhead
. What is VMware Fault Tolerance?
VMware Fault Tolerance provides continuous availability to applications running in a virtual machine, preventing downtime and data loss in the event of server failures.
VMware Fault Tolerance, when enabled for a virtual machine, creates a live shadow instance of the primary, running on another physical server.
The two instances are kept in virtual lockstep with each other using VMware vLockstep technology
The two virtual machines play the exact same set of events, because they get the exact same set of inputs at any given time.
The two virtual machines constantly heartbeat against each other and if either virtual machine instance loses the heartbeat, the other takes over immediately. The heartbeats are very frequent, with millisecond intervals, making the failover instantaneous with no loss of data or state.
VMware Fault Tolerance requires a dedicated network connection, separate from the VMware VMotion network, between the two physical servers.
How many virtual CPUs can I use on a Fault Tolerant virtual machine ?
vCenter Server 4.x and vCenter Server 5.x support 1 virtual CPU per protected virtual machine.
what happens if vCenter Server is offline when a failover event occurs?
When Fault Tolerance is configured for a virtual machine, vCenter Server need not be online for FT to work. Even if vCenter Server is offline, failover still occurs from the Primary to the Secondary virtual machine. Additionally, the spawning of a new Secondary virtual machine also occurs without vCenter Server.
24. How is a Master host elected in vSphere HA environment?
When vSphere HA is enabled for a cluster, all active hosts (those not in standby or maintenance mode, or not disconnected) participate in an election to choose the cluster's master host. The host that mounts the greatest number of datastores has an advantage in the election. Only one master host typically exists per cluster and all other hosts are slave hosts.
If the master host fails, is shut down or put in standby mode, or is removed from the cluster a new election is held.
14. What is promiscuous mode in VMware?
If the promiscuous mode set to Accept, all the communication is visible to all the virtual machines, in other words all the packets are sent to all the ports on vSwitch
If the promiscuous mode set to Reject, the packets are sent to intended port, so that the intended Virtual machine was able to see the communication.