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what type of Amazon Machine Image (AMI)?

A t2.medium EC2 instance type must be launched with what type of Amazon Machine Image (AMI)?

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A.
An Instance store Hardware Virtual Machine AMI

B.
An Instance store Paravirtual AMI

C.
An Amazon EBS-backed Hardware Virtual Machine AMI

D.
An Amazon EBS-backed Paravirtual AMI

Explanation:

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-resize.html

24 Comments on “what type of Amazon Machine Image (AMI)?

  1. JM says:

    C
    as per explanation link:
    You must launch a T2 instance using an HVM AMI. For more information, see Linux AMI Virtualization Types.

    You must launch your T2 instances using an EBS volume as the root device. For more information, see Amazon EC2 Root Device Volume.




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  2. SoftwareEngineer says:

    C is the right answer.

    T2 as an Instance Type does not support Instance Store, hence A & B options are invalid. That leaves us with C and D. AWS highly recommends HVM based AMI and hence “C” is the right answer.




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  3. Ashley says:

    Some Closing Thoughts
    My personal experiments have led me to believe that the T2’s are going to be a really nice fit for a very wide variety of use cases. I’m looking forward to hearing your feedback!

    Although the comparison is necessarily inexact, it is reasonable to map previous generations of EC2 instances to the T2 instances like this:

    t1.micro to t2.micro
    m1.small to t2.small
    m1.medium to t2.medium
    Replacing your previous generation instances with the equivalent T2 instances will give you significantly better performance at under half the cost. If you are planning to do this (I certainly am), don’t forget that the T2 instances do not include any local (instance) storage and that you’ll need to use one or more EBS volumes instead.

    The T2 instances use Hardware Virtualization (HVM) in order to get the best possible performance from the underlying CPU and you will need to use an HVM AMI.

    https://aws.amazon.com/blogs/aws/low-cost-burstable-ec2-instances/
    Answer c




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  4. Patty says:

    Are these questions still in the solutions architect associate exam? Seems we are moving into dev ops or sys ops questions? Any thoughts / opinions?




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