AWS AWS 3 — Questions and Answers
Question 1: Which AWS service provides a content delivery network (CDN) to cache content at edge locations?
- Amazon CloudFront (Correct answer)
- Amazon S3
- AWS Global Accelerator
- Elastic Load Balancing
Correct answer: Amazon CloudFront
CloudFront caches content at edge locations to reduce latency.
Question 2: Which AWS service is a managed relational database supporting MySQL, PostgreSQL, and others?
- Amazon RDS (Correct answer)
- Amazon DynamoDB
- Amazon ElastiCache
- Amazon Neptune
Correct answer: Amazon RDS
Amazon RDS is a managed relational database service supporting multiple engines.
Question 3: Which IAM feature allows EC2 instances to access AWS services without storing long-term credentials?
- IAM roles (Correct answer)
- IAM users
- Access keys
- Root account
Correct answer: IAM roles
IAM roles provide temporary credentials to EC2 instances securely.
Question 4: Which service helps you estimate and forecast your AWS spending over time?
- AWS Cost Explorer (Correct answer)
- AWS CloudTrail
- Amazon CloudWatch
- AWS Config
Correct answer: AWS Cost Explorer
AWS Cost Explorer visualizes and forecasts spending.
Question 5: What is the purpose of an Auto Scaling group in AWS?
- Automatically adjust the number of EC2 instances based on demand (Correct answer)
- Distribute traffic across regions
- Store scaling logs
- Encrypt EBS volumes
Correct answer: Automatically adjust the number of EC2 instances based on demand
Auto Scaling groups add or remove EC2 instances to match demand.
Question 6: Which AWS service records API calls made in your account for auditing and governance?
- AWS CloudTrail (Correct answer)
- Amazon CloudWatch
- AWS Config
- AWS Trusted Advisor
Correct answer: AWS CloudTrail
CloudTrail logs API activity across your AWS account.
Question 7: Which storage class is most cost-effective for long-term archival data rarely accessed?
- S3 Glacier Deep Archive (Correct answer)
- S3 Standard
- S3 Standard-IA
- S3 Intelligent-Tiering
Correct answer: S3 Glacier Deep Archive
S3 Glacier Deep Archive is the lowest-cost class for rarely accessed archives.
AWS AWS 3
Which AWS service provides a content delivery network (CDN) to cache content at edge locations?