View Full Amazon AWS Certified Solutions Architect – Associate SAA-C03 Exam Dumps and Practice Test Dumps

 

Question 21

Which AWS service provides a managed, scalable file system that can be mounted concurrently by multiple Linux-based EC2 instances?

1. Amazon EBS
2. Amazon EFS
3. Amazon S3
4. Amazon Glacier

Correct Answer: 2

Explanation

Amazon Elastic File System (EFS) provides a managed, elastic file system that multiple EC2 instances can access concurrently. EFS is designed for shared file storage and automatically scales as files are added or removed, eliminating the need to provision storage capacity manually. It is commonly used for shared application files, content management systems, and workloads requiring access from multiple compute instances. EBS provides block storage primarily for individual instances, while S3 and Glacier-style storage are object-based rather than traditional shared file systems.

Question 22

A company needs to distribute incoming HTTPS requests across several EC2 instances and route traffic based on URL paths. Which load balancer should it use?

1. Gateway Load Balancer
2. Network Load Balancer
3. Classic Load Balancer
4. Application Load Balancer

Correct Answer: 4

Explanation

Application Load Balancer (ALB) operates at the application layer and supports advanced HTTP and HTTPS routing capabilities. It can distribute traffic based on hostnames, URL paths, HTTP headers, and other application-level information. This makes ALB suitable for modern web applications and microservices that require content-based routing. Network Load Balancer is designed for high-performance Layer 4 traffic, while Gateway Load Balancer is designed for deploying network appliances. Classic Load Balancer is an older option with fewer advanced application-routing capabilities.

Question 23

Which AWS service provides a managed container orchestration platform that supports running containers without managing the underlying servers?

1. Amazon ECS with AWS Fargate
2. Amazon EC2
3. Amazon Lightsail
4. AWS Batch

Correct Answer: 1

Explanation

Amazon Elastic Container Service (ECS) with AWS Fargate provides a serverless way to run containers without managing the underlying EC2 instances. Fargate handles the compute infrastructure, allowing teams to focus on containerized applications, task definitions, networking, and scaling. This can reduce operational overhead compared with managing container hosts directly. Amazon EC2 requires infrastructure management, Lightsail provides simplified virtual servers, and AWS Batch is optimized for batch computing workloads. ECS with Fargate is therefore appropriate when an organization wants managed container execution without server administration.

Question 24

Which AWS storage service is best suited for temporary, high-performance block storage attached to an EC2 instance where data does not need to persist after instance termination?

1. Amazon EFS
2. Amazon S3
3. Amazon EC2 Instance Store
4. Amazon RDS

Correct Answer: 3

Explanation

Amazon EC2 Instance Store provides temporary block-level storage physically associated with the host running an EC2 instance. It can offer very high I/O performance and is useful for temporary data such as caches, buffers, scratch files, and intermediate processing data. Instance Store data is ephemeral, meaning it can be lost when the instance is stopped, terminated, or moved depending on the instance lifecycle. EBS provides persistent block storage, EFS provides shared file storage, and S3 provides object storage. Instance Store is therefore suitable for temporary high-performance data.

Question 25

Which AWS service provides a globally distributed system for caching frequently requested content closer to end users?

1. Amazon Route 53
2. Amazon CloudFront
3. Amazon SQS
4. AWS Global Accelerator

Correct Answer: 2

Explanation

Amazon CloudFront is AWS’s content delivery network and caches content at globally distributed edge locations. When users request frequently accessed content, CloudFront can serve it from an edge location closer to the user rather than retrieving it repeatedly from the origin. This reduces latency and can decrease the load placed on origin servers. Route 53 provides DNS services, SQS provides message queuing, and Global Accelerator improves application availability and performance through AWS’s global network but does not primarily function as an object caching CDN. CloudFront is therefore the correct choice.

Question 26

A company needs to provide temporary access to an S3 object without making the object publicly accessible. Which feature should it use?

1. S3 Versioning
2. S3 Lifecycle
3. S3 Presigned URL
4. S3 Transfer Acceleration

Correct Answer: 3

Explanation

An S3 presigned URL provides temporary access to a specific S3 object without requiring the object itself to be publicly accessible. The URL is generated with an expiration time and can be shared with an authorized user or application. After the specified period expires, the URL can no longer be used for access. S3 Versioning maintains multiple object versions, Lifecycle manages storage transitions and expiration, and Transfer Acceleration improves transfer performance over long distances. Presigned URLs are therefore ideal for controlled, temporary object access.

Question 27

Which AWS service can detect malicious or suspicious activity across AWS accounts, workloads, and data sources using threat intelligence and machine learning?

1. AWS Shield
2. Amazon Inspector
3. Amazon GuardDuty
4. AWS WAF

Correct Answer: 3

Explanation

Amazon GuardDuty is a managed threat detection service that continuously analyzes relevant AWS data sources to identify suspicious or malicious activity. It can detect potential threats such as compromised credentials, unusual API activity, and certain forms of network-based attacks. GuardDuty uses threat intelligence, anomaly detection, and machine learning to generate security findings. AWS WAF primarily filters web requests, Shield helps protect against DDoS attacks, and Inspector focuses on vulnerability management. GuardDuty is therefore the appropriate service for continuous intelligent threat detection across AWS environments.

Question 28

Which AWS service provides centralized management of multiple AWS accounts and allows organizations to apply policies across accounts?

1. AWS Organizations
2. AWS IAM
3. AWS Control Tower
4. AWS Config

Correct Answer: 1

Explanation

AWS Organizations provides centralized management for multiple AWS accounts. It allows organizations to group accounts into organizational units, manage consolidated billing, and apply Service Control Policies (SCPs) to establish permission guardrails. This helps organizations maintain consistent governance and security requirements across their AWS environment. IAM manages identities and permissions within accounts, AWS Config evaluates resource configurations, and Control Tower provides a broader landing-zone and governance framework. AWS Organizations is therefore the fundamental service for centrally managing multiple AWS accounts.

Question 29

Which AWS database service is specifically designed for analytical workloads involving large amounts of structured data?

1. Amazon DynamoDB
2. Amazon Aurora
3. Amazon Redshift
4. Amazon ElastiCache

Correct Answer: 3

Explanation

Amazon Redshift is a fully managed cloud data warehouse designed for large-scale analytical workloads. It is optimized for complex queries across large volumes of structured data and can aggregate information from multiple sources for business intelligence and reporting. Redshift uses a column-oriented architecture that is well suited to analytical queries. DynamoDB is a NoSQL database for low-latency transactional workloads, Aurora is a relational database, and ElastiCache provides in-memory caching. Redshift is therefore the appropriate AWS service for large-scale data warehousing and analytics.

Question 30

Which AWS service allows applications to run SQL queries directly against data stored in Amazon S3 without requiring the data to be loaded into a database?

1. Amazon RDS
2. Amazon DynamoDB
3. Amazon Athena
4. Amazon Redshift

Correct Answer: 3

Explanation

Amazon Athena is a serverless interactive query service that allows users to analyze data stored directly in Amazon S3 using standard SQL. It eliminates the need to load data into a separate database before querying it. Athena is particularly useful for analyzing logs, reports, and large datasets stored in formats such as CSV, JSON, and Parquet. RDS and DynamoDB are database services, while Redshift is a data warehouse. Athena is therefore well suited for ad hoc SQL analysis of data already stored in S3.

Question 31

Which AWS service provides protection against common web application attacks such as SQL injection and cross-site scripting?

1. AWS WAF
2. Amazon GuardDuty
3. AWS Shield
4. Amazon Inspector

Correct Answer: 1

Explanation

AWS WAF is a web application firewall that helps protect applications from common web-based attacks. Administrators can create rules to inspect incoming HTTP and HTTPS requests and block or allow traffic based on conditions such as IP addresses, request patterns, headers, and known attack signatures. AWS WAF can help mitigate threats including SQL injection and cross-site scripting. AWS Shield focuses primarily on DDoS protection, GuardDuty detects suspicious activity, and Inspector identifies vulnerabilities. WAF is therefore the appropriate service for filtering malicious web requests.

Question 32

Which AWS service provides a dedicated private connection between an on-premises network and a VPC over a private connectivity service?

1. AWS VPN
2. AWS Direct Connect
3. Amazon CloudFront
4. Amazon Route 53

Correct Answer: 2

Explanation

AWS Direct Connect establishes a dedicated network connection between an organization’s on-premises environment and AWS. This connection can provide more predictable network performance and private connectivity compared with sending traffic across the public internet. Direct Connect is commonly used for hybrid cloud architectures, large data transfers, and applications requiring consistent network connectivity. AWS Site-to-Site VPN creates encrypted tunnels over internet connections, while CloudFront and Route 53 provide content delivery and DNS services. Direct Connect is therefore the appropriate option for dedicated private connectivity.

Question 33

A company wants to automatically run code whenever a new object is uploaded to an S3 bucket. Which solution is most appropriate?

1. Amazon EC2
2. Amazon RDS
3. AWS Lambda with an S3 event notification
4. Amazon Redshift

Correct Answer: 3

Explanation

AWS Lambda can automatically execute code in response to events generated by Amazon S3. An S3 bucket can be configured to invoke a Lambda function when events such as object creation occur. This creates a serverless event-driven architecture where processing begins automatically without requiring continuously running servers. For example, a Lambda function could resize an uploaded image or validate a newly uploaded document. EC2 requires server management, RDS provides databases, and Redshift provides analytics. Lambda with S3 event notifications is therefore the most suitable solution.

Question 34

Which AWS feature allows an EC2 instance to access AWS services without storing long-term access keys on the instance?

1. IAM role
2. IAM user
3. Security group
4. Network ACL

Correct Answer: 1

Explanation

An IAM role allows an EC2 instance to obtain temporary credentials for accessing authorized AWS resources without embedding long-term access keys in application code or configuration files. The role is attached to the instance through an instance profile, and AWS automatically provides temporary credentials that applications can use. This approach improves security and simplifies credential management. IAM users are intended for identities, while security groups and network ACLs control network traffic. IAM roles are therefore the recommended mechanism for granting AWS permissions to EC2 applications.

Question 35

Which AWS service provides a managed in-memory data store that can improve application performance by reducing repeated database queries?

1. Amazon RDS
2. Amazon Redshift
3. Amazon ElastiCache
4. Amazon S3

Correct Answer: 3

Explanation

Amazon ElastiCache provides managed in-memory caching using engines such as Redis and Memcached. Applications can store frequently accessed information in memory so subsequent requests can be served faster without repeatedly querying a primary database. This can reduce database load and improve application response times. ElastiCache is commonly used for session data, frequently accessed records, and temporary application information. RDS and Redshift provide persistent database and analytics capabilities, while S3 provides object storage. ElastiCache is therefore the appropriate service for managed in-memory caching.

Question 36

Which AWS service provides managed protection against distributed denial-of-service attacks?

1. AWS WAF
2. AWS Shield
3. Amazon Inspector
4. Amazon Macie

Correct Answer: 2

Explanation

AWS Shield is a managed service designed to protect AWS applications against distributed denial-of-service (DDoS) attacks. AWS Shield Standard provides automatic protection for common network and transport-layer DDoS attacks, while AWS Shield Advanced offers additional protection, visibility, and support capabilities. AWS WAF focuses on filtering and controlling web requests, Inspector identifies vulnerabilities, and Macie helps discover and protect sensitive data. Shield is therefore the primary AWS service specifically designed to provide managed DDoS protection for supported AWS resources.

Question 37

Which AWS service can automatically discover sensitive data such as personally identifiable information stored in Amazon S3?

1. Amazon Macie
2. Amazon GuardDuty
3. AWS WAF
4. Amazon Inspector

Correct Answer: 1

Explanation

Amazon Macie is a data security and privacy service that uses machine learning and pattern matching to discover and help protect sensitive information stored in Amazon S3. It can identify potentially sensitive data such as personally identifiable information and provide findings about S3 bucket security and data exposure. GuardDuty focuses on threat detection, WAF filters web requests, and Inspector evaluates workloads for software vulnerabilities. Macie is therefore the appropriate service when an organization needs visibility into sensitive data stored in S3.

Question 38

A company needs a managed service that automatically provisions a scalable Kubernetes control plane. Which AWS service should it use?

1. Amazon ECS
2. AWS Fargate
3. Amazon EKS
4. AWS Batch

Correct Answer: 3

Explanation

Amazon Elastic Kubernetes Service (EKS) is a managed Kubernetes service that simplifies running Kubernetes clusters on AWS. AWS manages the Kubernetes control plane, reducing the operational burden associated with installing, upgrading, and maintaining core Kubernetes components. Organizations can run worker workloads using EC2 instances or AWS Fargate depending on their architecture. ECS is AWS’s own container orchestration service, while Fargate is a serverless compute technology that can support containers. EKS is therefore the correct choice when Kubernetes is specifically required.

Question 39

Which AWS service provides a managed message broker supporting protocols and technologies such as Apache ActiveMQ and RabbitMQ?

1. Amazon MQ
2. Amazon SQS
3. Amazon SNS
4. Amazon EventBridge

Correct Answer: 1

Explanation

Amazon MQ is a managed message broker service designed for applications that use traditional messaging technologies such as Apache ActiveMQ and RabbitMQ. It can help organizations migrate existing applications to AWS without completely redesigning their messaging architecture. SQS is a fully managed queue service, SNS provides publish/subscribe messaging, and EventBridge is an event bus service designed for event-driven architectures. Amazon MQ is therefore appropriate when an application depends on standard message-broker protocols and requires managed infrastructure.

Question 40

A company wants to deploy resources across separate physical locations within an AWS Region to improve application availability. What should it use?

1. Multiple AWS accounts
2. Multiple Availability Zones
3. Multiple VPCs
4. Multiple edge locations

Correct Answer: 2

Explanation

Availability Zones (AZs) are separate locations within an AWS Region that are engineered to be isolated from failures in other zones while remaining connected through low-latency networking. Deploying application components across multiple AZs can improve availability and resilience because a failure affecting one zone does not necessarily affect resources in another. Multiple VPCs provide network isolation, accounts provide administrative separation, and edge locations support services such as CloudFront. Multi-AZ architecture is therefore a fundamental design approach for improving workload availability within an AWS Region.