A company's application is running on Amazon EC2 instances. The company is planning a partial migration to a serverless architecture in the next year and wants to pay for resources up front.
Which AWS purchasing option will optimize the company's costs?
A. Convertible Reserved Instances
B. Spot Instances
C. EC2 Instance Savings Plans
D. Compute Savings Plan
Show Answer
Correct Answer: D
Explanation: The company wants to pay upfront and is planning a partial migration from EC2 to serverless. Compute Savings Plans provide the most flexibility because they apply to EC2, AWS Lambda, and AWS Fargate, allowing savings to continue as workloads shift to serverless. Reserved Instances and EC2 Instance Savings Plans are limited to EC2 only, and Spot Instances do not meet the upfront payment requirement.
Question 283
Which task is the responsibility of a company that is using Amazon RDS?
A. Provision the underlying infrastructure.
B. Create IAM policies to control administrative access to the service.
C. Install the cables to connect the hardware for compute and storage.
D. Install and patch the RDS operating system.
Show Answer
Correct Answer: B
Explanation: Under the AWS shared responsibility model for Amazon RDS, AWS manages the underlying infrastructure, hardware, and the RDS operating system, including patching. The customer is responsible for configuring access controls, including creating and managing IAM policies that govern administrative access to the service.
Question 284
A company wants to discover, prepare, move, and integrate data from multiple sources for data analytics and machine learning.
Which AWS serverless data integration service should the company use to meet these requirements?
A. AWS Glue
B. AWS Data Exchange
C. Amazon Athena
D. Amazon EMR
Show Answer
Correct Answer: A
Explanation: AWS Glue is a fully serverless data integration (ETL) service designed to discover, prepare, move, and integrate data from multiple sources for analytics and machine learning. The other options do not provide end-to-end serverless data integration: AWS Data Exchange is for subscribing to third-party datasets, Amazon Athena is a serverless query service, and Amazon EMR is a managed big data cluster service, not serverless.
Question 285
Which AWS service or feature allows users to securely store encrypted credentials and retrieve these credentials when required?
A. AWS Encryption SDK
B. AWS Security Hub
C. AWS Secrets Manager
D. AWS Artifact
Show Answer
Correct Answer: C
Explanation: The requirement is to securely store encrypted credentials (such as passwords, API keys, or database credentials) and retrieve them when needed. AWS Secrets Manager is purpose-built for this use case: it securely stores secrets encrypted with AWS KMS, provides controlled access via IAM, allows programmatic retrieval through APIs, and supports automatic rotation.
The other options do not fit:
- AWS Encryption SDK helps developers implement encryption in applications but does not provide a managed credential storage and retrieval service.
- AWS Security Hub aggregates and manages security findings; it does not store secrets.
- AWS Artifact provides access to AWS compliance reports and agreements, not credential storage.
Therefore, AWS Secrets Manager is the correct answer.
Question 286
Which AWS Cloud Adoption Framework (AWS CAF) perspective focuses on managing identities and permissions at scale?
A. Operations
B. Platform
C. Governance
D. Security
Show Answer
Correct Answer: D
Explanation: In the AWS Cloud Adoption Framework, managing identities and permissions at scale is part of the Security perspective. This perspective covers identity and access management (IAM), data protection, detection controls, and incident response, all of which are central to controlling who can access AWS resources and what actions they can perform.
Question 287
Which AWS service or tool gives a company the ability to release application changes in an automated way?
A. Amazon AppFlow
B. AWS CodeDeploy
C. AWS PrivateLink
D. Amazon EKS Distro
Show Answer
Correct Answer: B
Explanation: AWS CodeDeploy is a deployment service that automates the release of application changes. It manages application deployments to Amazon EC2, on-premises servers, AWS Lambda, and Amazon ECS, enabling automated, repeatable, and controlled application updates. The other options do not provide automated application deployment capabilities.
Question 288
Where can users find examples of AWS Cloud solution designs?
A. AWS Marketplace
B. AWS Service Catalog
C. AWS Architecture Center
D. AWS Trusted Advisor
Show Answer
Correct Answer: C
Explanation: Examples of AWS Cloud solution designs are provided in the AWS Architecture Center, which hosts reference architectures, diagrams, whitepapers, and best practices for building solutions on AWS.
Question 289
A company needs to use SQL syntax to perform a direct query of objects in an Amazon S3 bucket.
Which AWS service can the company use to meet this requirement?
A. AWS Glue
B. Amazon Athena
C. AWS Lambda
D. Amazon Kinesis
Show Answer
Correct Answer: B
Explanation: Amazon Athena is a serverless interactive query service that allows you to use standard SQL to directly query data stored in Amazon S3 without moving or loading the data. The other options do not provide direct SQL querying of S3 objects (Glue is ETL/catalog, Lambda is compute, Kinesis is streaming).
Question 290
A company has temporary workload that is also variable. The company needs to use Amazon EC2 instances for the workload. The EC2 instances need to handle short bursts of work that cannot stop before finishing.
Which purchase option will meet these requirements?
A. Spot Instances
B. On-Demand Instances
C. Savings Plan
D. Reserved Instances
Show Answer
Correct Answer: B
Explanation: The workload is temporary and variable, requiring instances that can start immediately and are not interrupted before completion. Spot Instances can be terminated at any time, so they are unsuitable. Savings Plans and Reserved Instances are designed for steady, long-term usage commitments, not short-term bursts. On-Demand Instances provide flexible, pay-as-you-go capacity with no interruption risk, making them the correct choice.
Question 291
Which AWS design principle emphasizes the reduction of interdependencies between components of an application?
A. Scalability
B. Loose coupling
C. Automation
D. Caching
Show Answer
Correct Answer: B
Explanation: The AWS design principle that focuses on reducing interdependencies between application components is loose coupling. By designing components to interact through well-defined interfaces with minimal dependencies, changes or failures in one component are less likely to impact others, improving flexibility, scalability, and resilience.
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