ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

10 Must Ask VMware Engineer Interview Questions

Updated on February 15, 2016

VMware Interview Questions

These virtualization engineer interview questions are designed to help determine the level of hands-on experience someone has because it's possible to answer most VMware interview questions normally asked with knowledge gained from a VCP Prep website, VMware for Beginners Guide or even by attending a basic installation and configuration class.

These technical questions are based on scenarios only known, or dealt with, by someone who has been exposed to projects, problems, or issues faced in a real world vSphere environment.

Question #1 (Whiteboard & Marker Required)

Please draw on the whiteboard a high level drawing that details a cluster of 4 ESXi hosts, connected to a vCenter, that has 20 VMs evenly balanced across the hosts. There are 2 network switches (A & B) connected to vSwitches for data and management vLans. The hosts are connected to 4-500GB shared storage LUNs that are presented via fiber channel.

Note: Most qualified virtualization engineers will be able to draw something. If you are recruiting to fill an engineering spot that will be representing your team, it is important that they can whiteboard a high level design with confidence.

Question #2

Explain the process of P2V and the cleanup process that is required after Windows Servers have been converted from a physical server into a VM.

Answers: Uninstall all no longer required applications for physical hardware, remove hidden devices, and adjust drive sizes, memory and vCPUs. Install VMtools and set screen resolution. Adjust OS swap file.

Question #3

A new type of SAN storage has been added to the environment to replace the old SAN storage. After presenting the new datastores and migrating the VMs to them, users report slower performance. What could need to be done to the VM file system to fix this?

Answer: Run a block alignment which requires a reboot of the VM (this may not be required on newer operating systems).

Question #4

You have a cluster of 8 ESXi hosts that require installation of a new security patch that will require a reboot of each host. Explain how you would reboot each host without impacting the VMs.

Answer: Place each host in maintenance mode, which will automatically vMotion the VMs off, then install the patch and reboot the host. Once all is okay and the host is back online, then remove the host from maintenance mode. Repeat the process on the other 7 hosts.

Question #5

Describe how you would determine when additional ESXi hosts are required? Explain how you determined this?

Answer: By setting thresholds and monitoring host memory and CPU utilization.

Question #6

How many ESXi hosts have you been responsible for managing in the last 3 years? Ask about the challenges faced.

Answer: More than 30 ESXi hosts is best to provide them with enough hands-on time to experience most of the common issues associated with virtual infrastructures. ESXi Updates, storage, VMtools are common problems.

Question #7

How many P2Vs have you completed in the last 3 years? Ask about the issues they had.

Answer: More than 25 P2Vs is best because each P2V is unique and develops knowledge of workarounds important for future consolidation projects.

Question #8

How many VM gold templates have you created? Explain the process you used for resetting any 3rd party applications such as antivirus and backup agents, or any other application which requires a unique key.

Answer: Windows GUIDs are unique IDs that need to be reset or they will be duplicated and cause issues. Also, it is important to sysprep each Windows Server created.

Question #9

Do you have any experience with cloud automation scripting that leverages Amazon AWS or other cloud computing provider APIs?

Note: Any experience in this area will be beneficial to longer term growth of your environment.

Question #10

What are your recommendations for backing up VMs? Follow up question, what are your recommendations for monitoring?

Note: These VMware technical interview questions will help you determine what 3rd party applications they are familiar with and allow the candidate to show you if they are passionate about the technology.

Conclusion:

If your interviewee can't answer these questions with a conclusive answer then they probably don't have much experience outside basic setup and installation training.

Read more hubs: IT Manager Interview Questions, Start a Career in Virtualization, High Quality Citrix Interview Questions

Read more virtualization topics on Joe's vm install blog.

© 2012 Joe Sanchez

Comments

    0 of 8192 characters used
    Post Comment

    • profile image

      Dov Brajtman 

      5 years ago

      Nice questions. They are relevant to any VMware infrastructure and while they may appear simple at first glance, one who has the correct experience should be able to give many and various experiences and examples. Nice.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)