CLF-C02 Cloud Technology and Services Practice Test 6 — 15 Questions

Question 1

A company runs a data processing job once per month. The job takes approximately 3 hours to complete when run on a single server. The company wants to minimize operational overhead and pay only for the compute time used during the job. The job does not require user interaction and must be able to automatically retry if a task fails. Which AWS service should the company use?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

AWS Batch. AWS Batch is designed for batch computing workloads that run to completion without user interaction. It automatically provisions the necessary compute resources (e.g., EC2 instances or Fargate), scales them to zero when idle, and provides built-in retry logic for failed tasks. This matches the requirement of a monthly 3-hour job with minimal operational overhead and pay-per-use billing.

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AWS Lambda

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Amazon EC2

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AWS Elastic Beanstalk

Question 2

A company runs a customer relationship management (CRM) application on a single Amazon RDS for PostgreSQL instance. The application experiences heavy read traffic during business hours, often causing the primary database to become overloaded with SELECT queries. The company needs a solution that offloads read queries to a separate database endpoint and provides automatic failover to a standby database in a different Availability Zone if the primary fails. Which combination of Amazon RDS features should the company use to meet these requirements?

Accepted Answer

Multi-AZ deployment with one or more Read Replicas. It combines Multi-AZ deployment for automatic failover to a standby in a different Availability Zone with Read Replicas to offload SELECT queries to a separate database endpoint. Multi-AZ ensures high availability by synchronously replicating data to a standby instance, while Read Replicas asynchronously replicate data to handle read-heavy traffic without burdening the primary.

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Multi-AZ deployment only

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Read Replicas only

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Cross-Region Read Replicas only

Question 3

A company runs multiple workloads in separate Amazon VPCs within the same AWS Region. The networking team needs to enable connectivity between all VPCs using private IP addresses. Additionally, the team must connect all VPCs to the company's on-premises data center through a single AWS Site-to-Site VPN connection to minimize costs and simplify management. The solution must support transitive routing so that any VPC can communicate with any other VPC and with the on-premises network. Which AWS service should the networking team use to meet these requirements?

Accepted Answer

AWS Transit Gateway with VPN attachments. AWS Transit Gateway acts as a central hub that connects multiple VPCs and on-premises networks through a single VPN attachment, supporting transitive routing between all connected networks. This meets the requirements for private IP connectivity, cost minimization, and simplified management by avoiding the need for full-mesh VPC peering or multiple VPN connections.

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VPC Peering with a VPN attachment to a Virtual Private Gateway

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AWS Direct Connect gateway with VPC associations

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A Network Load Balancer with VPN endpoints

Question 4

A company has a serverless application built with AWS Lambda. The application requires a series of functions to run in a specific order: after a user uploads a file, a validation function must run, then a processing function, and finally a metadata storage function. The company needs a service to coordinate these steps, manage state, handle errors, and automatically retry failed functions based on defined conditions. Which AWS service should the company use to meet these requirements?

Accepted Answer

AWS Step Functions. AWS Step Functions is a serverless orchestration service that lets you coordinate multiple AWS services into a flexible, visual workflow. It directly meets the requirement to run Lambda functions in a specific order, manage state between steps, handle errors with built-in retry logic, and define conditions for automatic retries using Amazon States Language (ASL). This makes it the ideal choice for orchestrating a multi-step serverless application with error handling and state management.

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Amazon Simple Queue Service (SQS)

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AWS Batch

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Amazon EventBridge

Question 5

A company runs an e-commerce application on Amazon EC2 instances in the us-east-1 Region. The application serves static assets (images, CSS files) and dynamic API responses. Users in Europe and Asia report that the website loads slowly, especially for images. The company needs a solution that reduces latency for both static and dynamic content by caching static assets at edge locations and accelerating dynamic API calls using optimized network paths. Which AWS service should the company use?

Accepted Answer

Amazon CloudFront. Amazon CloudFront is a content delivery network (CDN) that caches static assets (images, CSS files) at edge locations worldwide, reducing latency for users in Europe and Asia. It also supports dynamic API acceleration by using optimized network paths (AWS global network backbone) and features like origin shield and TCP optimizations, making it the correct choice for both static and dynamic content.

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AWS Global Accelerator

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Amazon S3 Transfer Acceleration

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Application Load Balancer

Question 6

A company runs a real-time bidding platform for online advertising. The platform requires a database that can handle millions of requests per second with single-digit millisecond latency for both reads and writes. The data model is simple key-value pairs, and the database must be fully managed so that the company does not have to provision or maintain servers. Which AWS database service should the company use to meet these requirements?

Accepted Answer

Amazon DynamoDB. Amazon DynamoDB is the correct choice because it is a fully managed NoSQL key-value and document database that delivers single-digit millisecond latency at any scale, handling millions of requests per second. Its serverless architecture eliminates the need to provision or manage servers, making it ideal for real-time bidding platforms with simple key-value data models and high-throughput, low-latency requirements.

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Amazon RDS

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Amazon Redshift

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Amazon ElastiCache

Question 7

A company runs an e-commerce web application on Amazon EC2 instances. During flash sales, the backend order processing service becomes overloaded and drops requests, causing customer failures. The company needs a durable, scalable, and fully managed service to buffer incoming order requests and decouple the web tier from the backend processing tier. Orders must be stored reliably and processed in the order they were received. Which AWS service should the company use?

Accepted Answer

Amazon Simple Queue Service (SQS). Amazon Simple Queue Service (SQS) is a fully managed message queuing service that decouples application components. It provides durable, scalable storage for incoming order requests and supports FIFO (First-In-First-Out) queues to guarantee that messages are processed exactly once and in the order they were sent, meeting the requirement for ordered processing.

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Amazon Simple Notification Service (SNS)

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Amazon Kinesis Data Streams

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Amazon MQ

Question 8

A media processing company runs multiple Amazon EC2 instances in different Availability Zones. All instances need to read and write to a shared file system simultaneously. The file system must be fully managed, automatically replicated across multiple Availability Zones for durability, and accessible by all instances using standard file access protocols. The company does not want to provision or manage any file servers. Which AWS service should the company use to meet these requirements?

Accepted Answer

Amazon EFS. Amazon EFS (Elastic File System) is a fully managed, scalable NFS file system that can be mounted concurrently by multiple EC2 instances across different Availability Zones. It automatically replicates data across multiple AZs for durability and uses standard NFSv4.1 and NFSv4.0 protocols, meeting all requirements without any server provisioning or management.

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Amazon S3

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Amazon EBS Multi-Attach

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Amazon FSx for Windows File Server

Question 9

A company's IT team manually provisions S3 buckets, EC2 instances, security groups, and IAM roles for each new project using the AWS Management Console. This process often results in configuration errors, such as overly permissive security rules or incorrect tagging, which the security team then has to fix manually. The company wants to define its entire infrastructure in a declarative template file, store it in version control, and have AWS automatically create or update the resources based on that template. Which AWS service should the company use to meet these requirements?

Accepted Answer

AWS CloudFormation. AWS CloudFormation is the correct service because it allows you to define your entire infrastructure—including S3 buckets, EC2 instances, security groups, and IAM roles—in a declarative JSON or YAML template. You can store this template in version control, and CloudFormation automatically provisions or updates the resources to match the template, eliminating manual configuration errors like overly permissive security rules or incorrect tagging.

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AWS Elastic Beanstalk

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AWS OpsWorks

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AWS CodeDeploy

Question 10

A media production company has a physical studio in Atlanta, Georgia. The company runs video editing workloads on Amazon EC2 instances that require single-digit millisecond latency to the studio's on-premises storage and workstations. The company wants to use AWS infrastructure that is physically located in or very near Atlanta to achieve this latency, while still having full access to AWS services like EC2, EBS, and VPC. The company does not want to manage the underlying hardware. Which AWS infrastructure option should the company use?

Accepted Answer

AWS Local Zones. AWS Local Zones are an infrastructure deployment that places compute, storage, and database services closer to large population centers, enabling single-digit millisecond latency for latency-sensitive applications. Since the company needs physical proximity to Atlanta without managing hardware, a Local Zone in or near Atlanta provides the required low latency while offering full access to EC2, EBS, and VPC services, with AWS handling the underlying hardware.

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AWS Outposts

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AWS Wavelength

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AWS Edge Locations

Question 11

A company hosts its website on a single Amazon EC2 instance in the us-east-1 Region. The website includes static assets such as images, CSS, and JavaScript files. Users in Europe and Asia report that the website loads slowly because the static assets must travel from the us-east-1 Region. The company wants to reduce latency for global users and decrease the load on the EC2 instance by serving static content from locations that are closer to the users. Which AWS service should the company use to meet these requirements?

Accepted Answer

Amazon CloudFront. Amazon CloudFront is a content delivery network (CDN) that caches static assets (images, CSS, JavaScript) at edge locations worldwide. By serving content from edge locations closer to users in Europe and Asia, CloudFront reduces latency and offloads requests from the origin EC2 instance, decreasing its load. This directly meets the requirements for global latency reduction and reduced EC2 load.

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AWS Global Accelerator

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Amazon Route 53 with latency-based routing

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Amazon S3 Transfer Acceleration

Question 12

A company runs a containerized application that uses multiple Docker containers. The development team wants to run these containers on AWS without provisioning or managing any EC2 instances. They also do not want to manage the container orchestration control plane. The application requires consistent access to persistent storage volumes that can be attached to containers. Which AWS service should the team use to run the containers with the least operational overhead?

Accepted Answer

AWS Fargate. AWS Fargate is a serverless compute engine for containers that allows you to run containers without provisioning or managing EC2 instances or the underlying container orchestration control plane (Amazon EKS or Amazon ECS). It directly meets the requirement of zero infrastructure management while supporting persistent storage through Amazon EFS filesystems or Docker volumes that can be attached to Fargate tasks, providing consistent access to storage volumes.

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Amazon EC2 with a container-optimized AMI

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AWS Lambda

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Amazon ECR (Amazon Elastic Container Registry)

Question 13

A company uses AWS CloudFormation to define and manage its production infrastructure as code. The operations team wants to ensure that any proposed changes to the stack are reviewed and explicitly approved before being applied. Which AWS CloudFormation feature should the company use?

Accepted Answer

AWS CloudFormation Change Sets. AWS CloudFormation Change Sets allow you to preview how proposed changes to a stack will impact your running resources before you apply them. This enables the operations team to review and explicitly approve changes, ensuring that modifications are not applied automatically without oversight.

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AWS CloudFormation StackSets

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AWS CloudFormation Drift Detection

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AWS CloudFormation Stack Policies

Question 14

A development team is migrating a monolithic application to a microservices architecture. Each microservice will run in a separate container. The team wants to deploy and scale these containers without managing any underlying servers or clusters. The team also wants to pay only for the vCPU and memory resources consumed by each container, not for any idle capacity. Which AWS compute service should the team use?

Accepted Answer

AWS Fargate. AWS Fargate is the correct choice because it is a serverless compute engine for containers that allows you to run containers without managing any underlying servers or clusters. With Fargate, you pay only for the vCPU and memory resources consumed by each container, not for any idle capacity, which directly matches the team's requirements.

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Amazon ECS with the EC2 launch type

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Amazon EKS with managed node groups

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AWS Lambda

Question 15

A financial analytics company runs a mission-critical application in its on-premises data center. The application must replicate large volumes of market data to Amazon S3 in real time. The company requires a dedicated, private network connection with consistent low latency and high throughput. The connection must not traverse the public internet. Which AWS service should the company use to meet these requirements?

Accepted Answer

AWS Direct Connect. AWS Direct Connect provides a dedicated, private network connection from an on-premises data center to AWS, bypassing the public internet. This ensures consistent low latency and high throughput, which is essential for replicating large volumes of market data in real time. The connection uses industry-standard 802.1Q VLANs and can be provisioned at speeds up to 100 Gbps, meeting the requirement for a private, high-performance link.

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AWS Site-to-Site VPN

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Amazon VPC peering

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AWS Transit Gateway