AWS (Amazon Web Services) Certification Practice Exam

What is Docker primarily used for in AWS environments?

1. Creating virtual machines

2. Automating application deployment in containers

3. Managing EC2 instances

4. Scaling databases

The correct answer is: Automating application deployment in containers

Docker is primarily used in AWS environments for automating application deployment in containers. Containers allow developers to package an application along with its dependencies, libraries, and configuration files into a single, lightweight executable unit. This containerization ensures that the application runs consistently across various computing environments, which contributes to a smoother deployment process. In AWS, Docker integrates seamlessly with services like Amazon Elastic Container Service (ECS) and Amazon Elastic Kubernetes Service (EKS), empowering developers to deploy and manage containerized applications efficiently. By using Docker, organizations can achieve improved resource utilization, faster deployment times, and simplified scaling processes. This capability is particularly vital in dynamic cloud environments where applications need to be frequently updated or scaled in response to demand. The other options are not aligned with Docker's primary purpose. While creating virtual machines, managing EC2 instances, and scaling databases are important tasks in cloud environments, they do not directly pertain to the containerization and deployment functionalities that Docker provides.