The correct answer is: C. Both A & B
An Amazon Machine Image (AMI) is a template that contains a set of instructions for creating a virtual machine (VM). AMIs provide a way to quickly and easily create new VMs that are identical to the source AMI.
There are two types of AMIs: instance store-backed and EBS-backed. Instance store-backed AMIs store the VM’s data on the instance store, which is a temporary storage system that is erased when the instance is stopped. EBS-backed AMIs store the VM’s data on Amazon Elastic Block Store (EBS), which is a persistent storage system that is not erased when the instance is stopped.
The type of AMI you choose depends on your needs. If you need a VM that can be quickly and easily created and destroyed, you should choose an instance store-backed AMI. If you need a VM that has persistent storage, you should choose an EBS-backed AMI.
Here is a brief explanation of each option:
- Option A: Instance store backed
An instance store-backed AMI stores the VM’s data on the instance store, which is a temporary storage system that is erased when the instance is stopped. Instance store-backed AMIs are the fastest and easiest to create and use. However, they do not provide persistent storage, so any data that is stored on the instance store will be lost when the instance is stopped.
- Option B: EBS backed
An EBS-backed AMI stores the VM’s data on Amazon Elastic Block Store (EBS), which is a persistent storage system that is not erased when the instance is stopped. EBS-backed AMIs are more reliable than instance store-backed AMIs, and they provide more storage space. However, they are also slower and more expensive to create and use.
- Option C: Both A & B
This is the correct answer. As explained above, there are two types of AMIs: instance store-backed and EBS-backed. You can choose either type of AMI, depending on your needs.
- Option D: None of the above
This is the incorrect answer. As explained above, there are two types of AMIs: instance store-backed and EBS-backed.