Top AWS Exam Questions
If you’re preparing for an AWS Certification exam, practice questions are the best way to test your knowledge. Below are the Top AWS Exam Questions and Answers that are helpful for AWS Solutions Architect, AWS Developer, and AWS Cloud Practitioner exams.
1. What is Amazon EC2 and how is it used?
Amazon EC2 (Elastic Compute Cloud) is a web service that provides resizable compute capacity in the cloud. It allows users to launch virtual servers, configure CPU, memory, storage, and networking resources, and pay only for the resources they use. EC2 is widely used for hosting applications, running workloads, and managing scalable infrastructure.
2. What is the difference between S3 and EBS?
Answer:
- Amazon S3 (Simple Storage Service): Object storage for storing unlimited data like files, images, and backups. Accessed via HTTP(S).
- Amazon EBS (Elastic Block Store): Block-level storage for use with EC2 instances. Works like a virtual hard drive.
3. What is AWS Lambda and why is it popular?
Answer:
AWS Lambda is a serverless computing service that lets you run code without provisioning or managing servers. You only pay for execution time. It’s popular for event-driven applications, automation, and microservices.
4. What is the difference between IAM Roles and IAM Policies?
Answer:
- IAM Roles: Temporary access permissions that can be assumed by services, applications, or users.
- IAM Policies: JSON-based documents that define permissions. Policies are attached to roles, users, or groups.
5. What is Amazon VPC?
Answer:
Amazon VPC (Virtual Private Cloud) enables you to create a logically isolated network in the AWS Cloud. You can control IP addressing, subnets, route tables, NAT gateways, and security groups, giving full control of your network environment.
6. What are AWS Availability Zones (AZs)?
Answer:
Availability Zones are physically separate data centers within an AWS Region. Each AZ has independent power, networking, and cooling, ensuring high availability and fault tolerance.
7. What is the difference between Scalability and Elasticity in AWS?
Answer:
- Scalability: Ability to increase or decrease resources to meet demand (vertical or horizontal scaling).
- Elasticity: Automatic scaling of resources up or down based on real-time demand.
8. What is Amazon RDS?
Answer:
Amazon RDS (Relational Database Service) is a managed database service that supports databases like MySQL, PostgreSQL, Oracle, SQL Server, and Amazon Aurora. It handles patching, backups, and scaling automatically.
9. What is AWS CloudFormation?
Answer:
AWS CloudFormation is an Infrastructure as Code (IaC) service. It allows you to define and provision AWS resources using templates (YAML/JSON), making deployments repeatable and automated.
10. What is the Shared Responsibility Model in AWS?
Answer:
AWS follows a Shared Responsibility Model:
- AWS: Responsible for cloud security (infrastructure, hardware, data centers).
- Customer: Responsible for security in the cloud (data, applications, IAM, configurations).
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