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

 

Question 261

Which AWS service provides a managed relational database compatible with popular database engines such as MySQL and PostgreSQL?

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

Correct Answer: 2

Explanation

Amazon Relational Database Service (RDS) is a managed database service that supports several relational database engines, including MySQL and PostgreSQL. AWS handles many administrative tasks such as provisioning, backups, patching, and maintenance. RDS also supports capabilities such as Multi-AZ deployments and read replicas for appropriate workloads. DynamoDB is a NoSQL database, Redshift is designed for analytics and data warehousing, and ElastiCache provides in-memory caching. RDS is therefore the appropriate choice when an application requires a managed traditional relational database.

Question 262

A company needs to store objects that are rarely accessed but must be retained for several years at the lowest possible storage cost. Which S3 storage class is most appropriate?

1. S3 Standard
2. S3 Standard-IA
3. S3 Glacier Deep Archive
4. S3 Intelligent-Tiering

Correct Answer: 3

Explanation

S3 Glacier Deep Archive is designed for long-term retention of data that is rarely accessed. It provides very low storage costs and is suitable for compliance records, financial records, backups, and other archival data that may need to be retained for years. Retrieval is slower than frequently accessed S3 storage classes, so it should be selected when immediate access is not required. S3 Standard is for frequently accessed data, Standard-IA is for infrequent but readily available access, and Intelligent-Tiering automatically manages changing access patterns.

Question 263

Which AWS service provides a managed firewall capability that can inspect and filter network traffic across VPCs?

1. AWS Network Firewall
2. Amazon GuardDuty
3. AWS WAF
4. AWS Shield

Correct Answer: 1

Explanation

AWS Network Firewall is a managed network firewall service that provides stateful inspection and filtering of network traffic within Amazon VPC environments. It can help organizations implement centralized network security controls, inspect traffic patterns, and enforce rules for network communication. AWS WAF primarily protects web applications by inspecting HTTP and HTTPS requests, while GuardDuty detects suspicious activity and Shield focuses on DDoS protection. AWS Network Firewall is therefore the appropriate service when centralized network-level traffic inspection and filtering are required.

Question 264

A company wants to allow an application running in a private subnet to access Amazon S3 without using a NAT Gateway. Which solution should be used?

1. Internet Gateway
2. NAT Gateway
3. Interface endpoint only
4. S3 Gateway VPC Endpoint

Correct Answer: 4

Explanation

An S3 Gateway VPC Endpoint allows resources in a VPC to access Amazon S3 privately without routing traffic through a NAT Gateway or Internet Gateway. The endpoint is associated with appropriate route tables so traffic destined for S3 uses the endpoint. This can improve the network architecture and avoid NAT processing charges for supported S3 traffic. A NAT Gateway is used for outbound internet connectivity, while an Internet Gateway provides internet access. The S3 Gateway VPC Endpoint is therefore the most appropriate solution for private S3 access.

Question 265

Which AWS service can distribute application traffic across multiple Availability Zones and automatically stop sending requests to unhealthy targets?

1. Amazon S3
2. Elastic Load Balancing
3. Amazon CloudWatch
4. AWS CloudTrail

Correct Answer: 2

Explanation

Elastic Load Balancing distributes incoming application traffic across registered targets such as EC2 instances, containers, or IP addresses. It performs health checks and can stop sending requests to targets that fail those checks. This improves application availability and helps prevent traffic from being directed to unhealthy resources. CloudWatch provides monitoring and metrics, CloudTrail records API activity, and S3 provides object storage. Elastic Load Balancing is therefore the appropriate service when application traffic needs to be distributed across healthy resources in multiple Availability Zones.

Question 266

A workload requires temporary compute capacity and can tolerate interruptions in exchange for significant cost savings. Which EC2 purchasing option is best?

1. Spot Instances
2. Reserved Instances
3. On-Demand Instances
4. Dedicated Hosts

Correct Answer: 1

Explanation

EC2 Spot Instances allow customers to use spare AWS compute capacity at significantly reduced prices compared with On-Demand Instances. However, Spot Instances can be interrupted when AWS needs the capacity back. They are therefore best suited to flexible and fault-tolerant workloads such as batch processing, distributed computing, and stateless applications. Reserved Instances are more appropriate for predictable workloads, On-Demand Instances provide flexible capacity without a commitment, and Dedicated Hosts provide dedicated physical servers. Spot Instances are therefore the best option for interruption-tolerant workloads seeking maximum cost savings.

Question 267

Which AWS service is primarily used to provide domain name resolution and DNS routing for applications?

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

Correct Answer: 3

Explanation

Amazon Route 53 is a highly available and scalable DNS service that provides domain name registration, DNS resolution, and traffic routing capabilities. It supports several routing policies, including simple, weighted, latency-based, geolocation, and failover routing. Route 53 can therefore direct users to appropriate application endpoints based on different routing requirements. CloudFront provides content delivery, Global Accelerator provides global network-level traffic routing, and API Gateway provides managed APIs. Route 53 is the appropriate service when DNS management and DNS-based application routing are required.

Question 268

A company needs to securely store an application password and automatically rotate it on a regular schedule. Which AWS service should be used?

1. AWS Systems Manager Parameter Store
2. AWS KMS
3. Amazon CloudWatch
4. AWS Secrets Manager

Correct Answer: 4

Explanation

AWS Secrets Manager is designed to securely store and manage sensitive information such as passwords, API keys, and database credentials. It supports automatic rotation for supported secrets, allowing organizations to regularly change credentials without manually updating application configurations. Applications can retrieve the current secret programmatically at runtime. KMS provides encryption key management, CloudWatch provides monitoring, and Parameter Store stores configuration parameters and can also protect certain values but is not the primary service for managed secret rotation. Secrets Manager is therefore the best choice.

Question 269

Which AWS service can provide a temporary, controlled URL that allows users to upload objects directly to a private S3 bucket?

1. Amazon CloudFront
2. S3 presigned URL
3. AWS PrivateLink
4. Amazon Route 53

Correct Answer: 2

Explanation

An S3 presigned URL grants temporary access to a specific S3 operation without making the bucket or object publicly accessible. Applications can generate a presigned URL that allows an authorized user to upload an object directly to S3 for a limited period. This is useful for applications that need users to upload files without exposing AWS credentials. CloudFront provides content delivery, PrivateLink provides private service connectivity, and Route 53 provides DNS. An S3 presigned URL is therefore appropriate for temporary controlled uploads.

Question 270

Which AWS service provides a managed, scalable NoSQL database supporting key-value and document data models?

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

Correct Answer: 3

Explanation

Amazon DynamoDB is a fully managed NoSQL database that supports key-value and document data models. It is designed to provide low-latency performance at scale without requiring customers to manage database servers. DynamoDB can support applications with very high request volumes and provides features such as automatic scaling options, global tables, backups, and encryption. RDS and Aurora are relational database services, while Redshift is an analytical data warehouse. DynamoDB is therefore the appropriate choice for scalable NoSQL workloads requiring predictable low-latency access.

Question 271

A company wants to detect suspicious activity involving AWS accounts, instances, and network traffic without manually analyzing security logs. Which service should be used?

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

Correct Answer: 1

Explanation

Amazon GuardDuty is a managed threat detection service that continuously analyzes relevant AWS activity and data sources to identify suspicious behavior. It can generate findings related to compromised credentials, malicious network activity, and unusual account behavior. GuardDuty helps security teams identify potential threats without requiring them to manually analyze large volumes of security data. Macie focuses on sensitive data discovery, Config evaluates resource configurations, and Inspector focuses on workload vulnerabilities. GuardDuty is therefore the appropriate service for managed threat detection across AWS environments.

Question 272

Which AWS service allows a company to run containers without provisioning or managing the underlying EC2 instances?

1. Amazon EKS with self-managed nodes
2. Amazon ECS with AWS Fargate
3. Amazon ECS with EC2 instances
4. Amazon EC2

Correct Answer: 2

Explanation

AWS Fargate provides serverless compute for containers and allows organizations to run ECS tasks without managing the underlying EC2 instances. AWS handles the infrastructure required to execute the containers, allowing teams to focus on application configuration and deployment. ECS with EC2 requires customers to manage the instances, and self-managed EKS nodes also require infrastructure administration. EC2 directly provides virtual machines rather than serverless container execution. ECS with Fargate is therefore the best choice when container workloads should run without managing servers.

Question 273

Which AWS service provides centralized monitoring through metrics, logs, dashboards, and alarms?

1. AWS CloudTrail
2. AWS Config
3. Amazon CloudWatch
4. AWS Organizations

Correct Answer: 3

Explanation

Amazon CloudWatch provides monitoring capabilities for AWS resources and applications through metrics, logs, dashboards, and alarms. Organizations can use CloudWatch to monitor resource performance, detect operational problems, and trigger automated responses when defined thresholds are reached. CloudTrail records API activity, Config tracks resource configurations and compliance, and Organizations manages multiple AWS accounts. CloudWatch is therefore the appropriate service when an organization requires centralized monitoring and alerting for infrastructure and application workloads.

Question 274

A company wants to protect an EC2-based application from receiving traffic directly from the internet and only allow traffic from an Application Load Balancer. Which security control should be configured on the EC2 instances?

1. Network ACL allowing all internet traffic
2. Security group allowing traffic only from the ALB security group
3. Public IP address on each EC2 instance
4. Internet Gateway route directly to the instances

Correct Answer: 2

Explanation

Security groups are stateful virtual firewalls associated with resources such as EC2 instances. The EC2 instances can be configured with a security group that permits application traffic only from the security group associated with the Application Load Balancer. This prevents direct internet traffic from reaching the instances while allowing legitimate requests through the load balancer. Public IP addresses and broad network ACL rules would expose the instances unnecessarily. Using security groups to restrict traffic to the load balancer follows the principle of least privilege.

Question 275

Which AWS service is designed to provide a dedicated private network connection between an on-premises data center and AWS?

1. AWS Direct Connect
2. AWS Client VPN
3. Amazon CloudFront
4. Amazon SQS

Correct Answer: 1

Explanation

AWS Direct Connect provides a dedicated network connection between an on-premises data center and AWS. It can provide more predictable network performance than internet-based connections and is commonly used for hybrid architectures, large-scale data transfers, and workloads requiring consistent private connectivity. Client VPN provides remote user access to AWS resources, CloudFront provides content delivery, and SQS provides message queuing. Direct Connect is therefore the appropriate choice when an organization requires dedicated private connectivity between its data center and AWS infrastructure.

Question 276

Which AWS service can provide centralized governance across multiple AWS accounts using organizational units and Service Control Policies?

1. AWS Organizations
2. AWS IAM Identity Center
3. Amazon Cognito
4. AWS CloudTrail

Correct Answer: 1

Explanation

AWS Organizations enables centralized management and governance of multiple AWS accounts. Organizations can group accounts into organizational units and apply Service Control Policies to establish permission boundaries across accounts. It also supports centralized account management and consolidated billing. IAM Identity Center focuses on workforce access, Cognito manages application users, and CloudTrail records account activity. AWS Organizations is therefore the appropriate service when an enterprise needs centralized multi-account governance, account grouping, and organization-wide permission restrictions.

Question 277

Which disaster recovery strategy maintains a scaled-down but operational copy of the production environment that can be increased during a disaster?

1. Backup and restore
2. Pilot light
3. Warm standby
4. Cold site

Correct Answer: 3

Explanation

A warm standby disaster recovery strategy maintains a scaled-down but functional version of the production environment. During a disaster, additional resources can be added or scaled to handle the full production workload. This generally provides faster recovery than backup and restore or pilot light because the environment is already operational. Backup and restore requires rebuilding resources from backups, while pilot light keeps only essential components continuously running. Warm standby provides a useful balance between recovery speed and operating cost for many disaster recovery requirements.

Question 278

Which AWS service provides a managed event bus that can route events from AWS services and applications to configured targets?

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

Correct Answer: 3

Explanation

Amazon EventBridge is a serverless event bus service that receives events from AWS services, applications, and supported external sources. Rules can inspect event patterns and route matching events to targets such as Lambda, Step Functions, SQS, and other supported services. This supports loosely coupled and event-driven application architectures. SQS focuses on queue-based messaging, SNS provides pub/sub notifications, and EBS provides block storage. EventBridge is therefore the appropriate service when an organization needs flexible event routing based on event patterns.

Question 279

Which AWS service can automatically scale the number of EC2 instances based on CloudWatch metrics such as CPU utilization?

1. Amazon EC2 Auto Scaling
2. AWS CloudTrail
3. Amazon Route 53
4. AWS Config

Correct Answer: 1

Explanation

Amazon EC2 Auto Scaling can automatically adjust the number of EC2 instances in an Auto Scaling group according to demand. Scaling policies can use CloudWatch metrics such as average CPU utilization, request counts, or application-specific metrics to determine when additional capacity should be launched or unnecessary instances removed. This helps maintain application performance while controlling infrastructure costs. CloudTrail records API activity, Route 53 provides DNS services, and Config evaluates resource configurations. EC2 Auto Scaling with CloudWatch metrics is therefore appropriate for dynamic compute capacity management.

Question 280

Which AWS Well-Architected Framework pillar focuses on selecting and sizing resources efficiently while avoiding unnecessary infrastructure costs?

1. Reliability
2. Security
3. Performance Efficiency
4. Cost Optimization

Correct Answer: 4

Explanation

The Cost Optimization pillar focuses on avoiding unnecessary expenses while delivering business value. It includes practices such as selecting appropriately sized resources, eliminating unused infrastructure, choosing suitable pricing models, monitoring spending, and using managed services efficiently. Reliability focuses on workload recovery and availability, Security focuses on protecting systems and data, and Performance Efficiency focuses on using computing resources efficiently to meet requirements. Cost Optimization is therefore the appropriate pillar when the primary objective is controlling AWS spending while maintaining required business outcomes.