Cloud Concepts

1. A company wants to migrate its web application to AWS but retain full control over the operating system, middleware, and runtime environment. Which cloud service model best fits this requirement?

• A.Infrastructure as a Service (IaaS), which provides virtualized compute, storage, and networking resources the customer manages.✓ Correct
• B.Platform as a Service (PaaS), which abstracts the underlying infrastructure and lets developers focus on application code.
• C.Software as a Service (SaaS), which delivers fully managed applications over the internet with no infrastructure access.
• D.Function as a Service (FaaS), which runs individual functions on demand without any server management by the customer.

2. A development team wants to deploy a web application without managing servers, operating systems, or runtime patches. AWS Elastic Beanstalk handles infrastructure provisioning automatically. Which cloud model does Elastic Beanstalk represent?

• A.Infrastructure as a Service (IaaS), because the team must still configure EC2 instances and networking manually.
• B.Platform as a Service (PaaS), because AWS manages the underlying infrastructure while the team focuses only on application code.✓ Correct
• C.Software as a Service (SaaS), because the application is delivered to end users over the internet as a subscription service.
• D.On-premises hosting, because the team retains full physical access to the servers running the application.

3. An enterprise wants to provide employees with business email and collaboration tools without hosting any servers or managing software updates. Which cloud service model should they adopt?

• A.Infrastructure as a Service (IaaS), allowing the company to rent virtual machines and install its own email software.
• B.Platform as a Service (PaaS), allowing developers to build custom email apps on a managed runtime environment.
• C.Software as a Service (SaaS), where the provider delivers a fully managed, ready-to-use application over the internet.✓ Correct
• D.Bare-metal hosting, giving the company dedicated hardware with full control over the email server software stack.

4. A retail company needs to process thumbnail images automatically each time a photo is uploaded to an Amazon S3 bucket. The workload is intermittent and unpredictable. Which AWS service and pattern best addresses this requirement with the least operational overhead?

• A.An EC2 Auto Scaling group that polls the S3 bucket every minute and processes new objects as they appear.
• B.AWS Lambda triggered by an S3 event notification, running the image processing code only when a new object is uploaded.✓ Correct
• C.An Amazon RDS stored procedure that reads S3 objects and generates thumbnails inside the database engine.
• D.An AWS Glue ETL job scheduled every hour to scan the S3 bucket and batch-process all newly uploaded images.

5. Which of the following statements BEST describes the key benefit of serverless workloads when migrating to the AWS Cloud?

• A.Serverless workloads give developers full access to the underlying operating system for custom kernel optimizations.
• B.Serverless workloads eliminate the need to provision or manage servers, automatically scaling in response to demand and charging only for execution time.✓ Correct
• C.Serverless workloads require reserving a fixed amount of compute capacity in advance to guarantee consistent performance.
• D.Serverless workloads are most suitable for long-running, stateful batch processes that need persistent in-memory storage.