AWS SAA-C03 Solutions Architect Associate 2025 – Full
Practice Test + Cheat Sheets + Diagrams (Updated &
Verified)
AWS SAA-C03 2025 Study Bundle: 65 Real Questions +
Cheat Sheets + Architectures + Exam Hacks
📘 AWS Certified Solutions Architect – Associate
(SAA-C03)
✅ Practice Questions 1–65 with Answers & Rationales
Format:Multiple Choice (1 correct answer unless statedotherwise)
Level:Updated for 2025 Exam Objectives
Question 1
A company wants to host a static website for their product launch using AWS. The
site must be globally accessible with minimal latency and incur the lowest cost.
Which solution meets these requirements?
A. Host the website using Amazon EC2 and NGINX
B. Use Amazon S3 with static website hosting and CloudFront
, 2
C. Use Amazon API Gateway with Lambda integration
D. Deploy the site using Amazon EFS and EC2 Auto Scaling
✅Correct Answer:B
📘Rationale:Amazon S3 with static website hostingis cost-effective and
scalable. Adding CloudFront ensures global low-latency access via CDN. EC2 and
EFS are overkill for a static site.
📌Services:S3, CloudFront
Question 2
An application running on EC2 instances in a public subnet needs to access an RDS
database in a private subnet.
What must be configured to allow secure communication?
A. Enable NAT Gateway for the public subnet
B. Assign Elastic IP to the RDS instance
C. Configure Security Groups to allow inbound/outbound traffic
D. Attach an IAM role to the EC2 instance
✅Correct Answer:C
📘Rationale:For EC2 to connect to RDS, security group rules must allow inbound
access on the database port (e.g., 3306). IAM roles don’t grant network-level
access.
📌Services:EC2, RDS, VPC
Question 3
Which AWS service allows decoupling of components in a microservices
architecture?
A. Amazon S3
B. AWS Lambda
, 3
C. Amazon SQS
D. AWS CodeDeploy
✅Correct Answer:C
📘Rationale:Amazon SQS (Simple Queue Service) allowsasynchronous message
communication between decoupled services. Lambda can process messages, but
SQS is the decoupler.
📌Services:SQS, Microservices
Question 4
A developer needs temporary access credentials to interact with AWS services
from a mobile app.
Which service provides the best solution?
A. Amazon Cognito
B. AWS KMS
C. AWS Secrets Manager
D. Amazon GuardDuty
✅Correct Answer:A
📘Rationale:Cognito issues temporary AWS credentialsusing Identity Pools,
making it ideal for mobile or web apps without exposing IAM keys.
📌Services:Cognito, IAM
Question 5
Which of the following actions reduces costandimproveshigh availability for a
web application deployed across multiple Availability Zones?
A. Enable multi-AZ in RDS only
B. Use Auto Scaling and place instances behind an ELB
C. Use one large EC2 instance in a single AZ
D. Use an EBS volume shared across AZs
, 4
✅Correct Answer:B
📘Rationale:Auto Scaling combined with ElasticLoad Balancing (ELB) distributes
traffic and adds/removes instances based on demand, improving availability and
cost-efficiency.
📌Services:EC2, ELB, Auto Scaling
Question 6
Which service provides real-time application metrics, logs, and system-level
monitoring?
A. AWS CloudTrail
B. Amazon CloudWatch
C. AWS Config
D. AWS Inspector
✅Correct Answer:B
📘Rationale:CloudWatch offers metrics, logs, dashboards,alarms, and insights
into system health. CloudTrail tracks API calls, not metrics.
📌Services:CloudWatch
Question 7
A company stores 100 TB of data that is rarely accessed. Which storage class is
most cost-effective?
A. S3 Standard
B. S3 Intelligent-Tiering
C. S3 Glacier Deep Archive
D. Amazon EBS Cold HDD
✅Correct Answer:C
📘Rationale:S3 Glacier Deep Archive is the cheapestfor long-term, infrequent
access data (e.g., archival). EBS is block storage and not suited for this use case.
📌Services:S3 Glacier
Practice Test + Cheat Sheets + Diagrams (Updated &
Verified)
AWS SAA-C03 2025 Study Bundle: 65 Real Questions +
Cheat Sheets + Architectures + Exam Hacks
📘 AWS Certified Solutions Architect – Associate
(SAA-C03)
✅ Practice Questions 1–65 with Answers & Rationales
Format:Multiple Choice (1 correct answer unless statedotherwise)
Level:Updated for 2025 Exam Objectives
Question 1
A company wants to host a static website for their product launch using AWS. The
site must be globally accessible with minimal latency and incur the lowest cost.
Which solution meets these requirements?
A. Host the website using Amazon EC2 and NGINX
B. Use Amazon S3 with static website hosting and CloudFront
, 2
C. Use Amazon API Gateway with Lambda integration
D. Deploy the site using Amazon EFS and EC2 Auto Scaling
✅Correct Answer:B
📘Rationale:Amazon S3 with static website hostingis cost-effective and
scalable. Adding CloudFront ensures global low-latency access via CDN. EC2 and
EFS are overkill for a static site.
📌Services:S3, CloudFront
Question 2
An application running on EC2 instances in a public subnet needs to access an RDS
database in a private subnet.
What must be configured to allow secure communication?
A. Enable NAT Gateway for the public subnet
B. Assign Elastic IP to the RDS instance
C. Configure Security Groups to allow inbound/outbound traffic
D. Attach an IAM role to the EC2 instance
✅Correct Answer:C
📘Rationale:For EC2 to connect to RDS, security group rules must allow inbound
access on the database port (e.g., 3306). IAM roles don’t grant network-level
access.
📌Services:EC2, RDS, VPC
Question 3
Which AWS service allows decoupling of components in a microservices
architecture?
A. Amazon S3
B. AWS Lambda
, 3
C. Amazon SQS
D. AWS CodeDeploy
✅Correct Answer:C
📘Rationale:Amazon SQS (Simple Queue Service) allowsasynchronous message
communication between decoupled services. Lambda can process messages, but
SQS is the decoupler.
📌Services:SQS, Microservices
Question 4
A developer needs temporary access credentials to interact with AWS services
from a mobile app.
Which service provides the best solution?
A. Amazon Cognito
B. AWS KMS
C. AWS Secrets Manager
D. Amazon GuardDuty
✅Correct Answer:A
📘Rationale:Cognito issues temporary AWS credentialsusing Identity Pools,
making it ideal for mobile or web apps without exposing IAM keys.
📌Services:Cognito, IAM
Question 5
Which of the following actions reduces costandimproveshigh availability for a
web application deployed across multiple Availability Zones?
A. Enable multi-AZ in RDS only
B. Use Auto Scaling and place instances behind an ELB
C. Use one large EC2 instance in a single AZ
D. Use an EBS volume shared across AZs
, 4
✅Correct Answer:B
📘Rationale:Auto Scaling combined with ElasticLoad Balancing (ELB) distributes
traffic and adds/removes instances based on demand, improving availability and
cost-efficiency.
📌Services:EC2, ELB, Auto Scaling
Question 6
Which service provides real-time application metrics, logs, and system-level
monitoring?
A. AWS CloudTrail
B. Amazon CloudWatch
C. AWS Config
D. AWS Inspector
✅Correct Answer:B
📘Rationale:CloudWatch offers metrics, logs, dashboards,alarms, and insights
into system health. CloudTrail tracks API calls, not metrics.
📌Services:CloudWatch
Question 7
A company stores 100 TB of data that is rarely accessed. Which storage class is
most cost-effective?
A. S3 Standard
B. S3 Intelligent-Tiering
C. S3 Glacier Deep Archive
D. Amazon EBS Cold HDD
✅Correct Answer:C
📘Rationale:S3 Glacier Deep Archive is the cheapestfor long-term, infrequent
access data (e.g., archival). EBS is block storage and not suited for this use case.
📌Services:S3 Glacier
