Learn about the Amazon Machine Image (AMI), a key AWS feature that serves as a deployable EC2 instance template pre-packaged with software, configurations, and security requirements. Essential for the AWS Certified Cloud Practitioner CLF-C02 exam.
Question
Which AWS feature or resource is a deployable Amazon EC2 instance template that is pre-packaged with software and security requirements?
A. Amazon Elastic Block Store (Amazon EBS) volume
B. AWS CloudFormation template
C. Amazon Elastic Block Store (Amazon EBS) snapshot
D. Amazon Machine Image (AMI)
Answer
D. Amazon Machine Image (AMI)
Explanation
An Amazon Machine Image (AMI) is a deployable Amazon EC2 instance template that is pre-packaged with software and security requirements. It provides the information required to launch an instance, which is a virtual server in the cloud. You can use an AMI to launch as many instances as you need. You can also create your own custom AMIs or use shared AMIs from other AWS users.
An Amazon Machine Image (AMI) is a pre-configured template that includes the necessary software, operating system, libraries, application code, and security configurations required to launch an Amazon EC2 instance. It acts as a blueprint for creating virtual servers in the AWS Cloud.
Key features of an AMI
- Customizability: Users can create custom AMIs tailored to their specific needs or use pre-built AMIs provided by AWS or third parties.
- Software Packaging: Each AMI includes all the software components needed to boot and run an EC2 instance.
- Security Configurations: AMIs can be configured with specific security settings to meet compliance or organizational requirements.
- Scalability: Using AMIs ensures consistency when deploying multiple instances with the same configuration, which is critical for scaling applications.
When launching an EC2 instance, users must specify an AMI. This makes it an essential resource for deploying and managing compute resources efficiently in AWS environments.
Why Other Options Are Incorrect
A. Amazon Elastic Block Store (Amazon EBS) volume: EBS volumes are block storage devices attached to EC2 instances but do not serve as templates for creating instances.
B. AWS CloudFormation template: CloudFormation templates define infrastructure as code to provision AWS resources but are not specific to EC2 instance templates.
C. Amazon Elastic Block Store (Amazon EBS) snapshot: EBS snapshots are backups of EBS volumes and do not include the full configuration required to launch an EC2 instance.
The correct answer is D. Amazon Machine Image (AMI) because it encapsulates all the components necessary to deploy a fully operational EC2 instance, making it a critical feature for managing cloud infrastructure effectively.
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