CLF-C02 Cloud Technology and Services Practice Test 13 — 15 Questions

Question 1

A company wants to test a new version of their application by sending 10% of user traffic to the new version and 90% to the existing version, gradually increasing traffic to the new version as confidence grows. Which Amazon Route 53 routing policy supports this?

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

Accepted Answer

Weighted routing. Weighted routing (C) is correct because it allows you to assign a percentage of traffic to each resource, such as 10% to the new version and 90% to the existing version. As confidence grows, you can adjust the weights to gradually shift more traffic to the new version. This policy is specifically designed for load balancing between multiple endpoints in a controlled, proportional manner.

Answer

Failover routing

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Geolocation routing

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Latency routing

Question 2

A company runs multiple EC2 instances across several applications and wants to centralise all application log files in one place for searching, analysis, and long-term retention. Which AWS service provides centralised log storage and querying?

Accepted Answer

Amazon CloudWatch Logs. Amazon CloudWatch Logs is the correct service because it is designed to centralize log storage from multiple sources, including EC2 instances, via the CloudWatch agent. It provides built-in querying with Logs Insights, supports real-time monitoring, and offers configurable retention policies for long-term storage, meeting all requirements for searching, analysis, and retention.

Answer

Amazon S3

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AWS CloudTrail

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Amazon Kinesis Data Firehose

Question 3

A company's microservices application consists of 10 services. When a user request is slow, the development team cannot determine which service in the chain is the bottleneck. Which AWS service provides distributed tracing so they can see the full path of a request and identify the slow component?

Accepted Answer

AWS X-Ray. AWS X-Ray is the correct service because it provides end-to-end distributed tracing, allowing developers to trace a request as it travels through multiple microservices. It generates a service map that shows the full path of a request, including latency breakdowns for each service, enabling identification of the slow component. This directly addresses the need to pinpoint bottlenecks in a chain of 10 services.

Answer

Amazon CloudWatch Metrics

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AWS CloudTrail

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Amazon Inspector

Question 4

A development team builds Docker container images as part of their CI/CD pipeline and needs a managed, private registry to store and version these images, integrated with Amazon ECS and EKS for deployment. Which AWS service provides this container image registry?

Accepted Answer

Amazon ECR. Amazon ECR (Elastic Container Registry) is the correct choice because it is a fully managed Docker container registry that stores, manages, and deploys container images. It integrates natively with Amazon ECS and Amazon EKS, allowing seamless image pulls during deployment without needing to manage underlying infrastructure.

Answer

Amazon ECS

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Amazon S3

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AWS CodeBuild

Question 5

A data engineering team processes petabytes of raw log data using Apache Spark and Hadoop frameworks. They need a managed AWS service that provisions the cluster, installs the big data frameworks, and terminates the cluster after the job completes to minimise cost. Which service should they use?

Accepted Answer

Amazon EMR. Amazon EMR is the correct choice because it is a managed big data platform that can provision Apache Spark and Hadoop clusters, install the required frameworks, and automatically terminate the cluster upon job completion using features like transient clusters and step-based lifecycle management. This minimizes cost by only paying for compute resources during active processing.

Answer

Amazon Redshift

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AWS Glue

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Amazon Athena

Question 6

A company wants to create interactive dashboards and charts from data stored in Amazon S3, Amazon RDS, and Amazon Redshift, sharing them with business users across the organisation without managing BI server infrastructure. Which AWS service provides cloud-native business intelligence?

Accepted Answer

Amazon QuickSight. Amazon QuickSight is a cloud-native, serverless business intelligence (BI) service that enables users to create interactive dashboards and visualizations from data sources such as Amazon S3, Amazon RDS, and Amazon Redshift. It requires no BI server infrastructure management, supports SPICE (Super-fast, Parallel, In-memory Calculation Engine) for high-performance data caching, and allows sharing dashboards with business users across an organization via a web browser or mobile app.

Answer

Amazon Athena

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Amazon Redshift

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Amazon CloudWatch

Question 7

A company wants to centralise backup management for all their AWS resources — EC2, EBS, RDS, DynamoDB, and EFS — under a single policy, automate backup schedules, and ensure cross-region backup copies for disaster recovery. Which AWS service provides this?

Accepted Answer

AWS Backup. AWS Backup is the correct choice because it provides a fully managed, centralized backup service that supports EC2, EBS, RDS, DynamoDB, and EFS. It allows you to define a single backup policy, automate backup schedules, and configure cross-region copies for disaster recovery, meeting all the stated requirements.

Answer

Amazon S3 versioning

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AWS Snapshot Manager

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AWS CloudFormation

Question 8

A company wants to provide employees with secure, managed virtual Windows or Linux desktops accessible from any device, without purchasing physical computers or managing on-premises VDI infrastructure. Which AWS service provides cloud-based virtual desktops?

Accepted Answer

Amazon WorkSpaces. Amazon WorkSpaces is a fully managed, cloud-based virtual desktop infrastructure (VDI) service that provides secure, persistent Windows or Linux desktops accessible from any supported device. It eliminates the need to purchase physical hardware or manage on-premises VDI, aligning directly with the scenario described.

Answer

Amazon AppStream 2.0

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Amazon EC2 with Remote Desktop

Answer

AWS Connect

Question 9

A small business owner wants to host a simple WordPress website on AWS with a predictable flat monthly price, without learning about VPCs, security groups, instance types, or other AWS complexity. Which AWS service is designed for this simplified use case?

Accepted Answer

Amazon Lightsail. Amazon Lightsail is designed specifically for users who need a simple, predictable monthly pricing model without managing underlying AWS infrastructure like VPCs, security groups, or instance types. It provides pre-configured virtual private servers (VPS) with a fixed monthly cost, including a one-click WordPress deployment, making it ideal for a small business owner who wants to avoid AWS complexity.

Answer

Amazon EC2 with a t3.micro

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AWS Elastic Beanstalk

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AWS Lambda

Question 10

A company has workloads that must remain on-premises due to data residency regulations but want to use the same AWS APIs, tools, and services they use in the cloud — including EC2, RDS, and S3 — on their on-premises hardware. Which AWS service enables this?

Accepted Answer

AWS Outposts. AWS Outposts is a fully managed service that extends AWS infrastructure, services, APIs, and tools to virtually any on-premises data center or co-location space. It allows customers to run EC2, RDS, and S3 locally on Outposts hardware while maintaining the same AWS control plane and APIs, satisfying data residency requirements without sacrificing cloud-native tooling.

Answer

AWS Direct Connect

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AWS Snow Family

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AWS Local Zones

Question 11

A data team needs to extract data from S3 and RDS, transform it (clean, enrich, join), and load it into Amazon Redshift for analytics. They want a serverless service that discovers and catalogues data schemas automatically and runs the ETL jobs without provisioning servers. Which AWS service provides this?

Accepted Answer

AWS Glue. AWS Glue is a fully managed, serverless ETL service that automatically discovers and catalogs data schemas using its Crawler feature, which populates the AWS Glue Data Catalog. It can extract data from S3 and RDS, transform it (clean, enrich, join), and load it into Amazon Redshift without any server provisioning or management.

Answer

Amazon EMR

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AWS Data Pipeline

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Amazon Kinesis Data Firehose

Question 12

A company wants to set up a cloud-based customer service contact centre with an interactive voice response (IVR) system, agent call routing, and the ability to scale to thousands of agents without purchasing phone hardware or PBX equipment. Which AWS service provides this?

Accepted Answer

Amazon Connect. Amazon Connect is a cloud-based contact center service that provides an interactive voice response (IVR) system, automatic call distribution (ACD) for agent routing, and the ability to scale to thousands of agents without requiring any physical phone hardware or PBX equipment. It is purpose-built for this exact use case, offering pay-as-you-go pricing and integration with AWS services like Lambda and Lex for custom IVR flows.

Answer

Amazon Chime

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Amazon SNS

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Amazon WorkMail

Question 13

A company wants to deploy a static website with global low-latency delivery and automatic SSL/TLS certificates. Which combination of AWS services best satisfies both requirements?

Accepted Answer

Amazon S3 + Amazon CloudFront. Amazon S3 provides durable, cost-effective storage for static website content, while Amazon CloudFront acts as a global content delivery network (CDN) that caches content at edge locations for low-latency delivery. CloudFront also integrates with AWS Certificate Manager (ACM) to automatically provision and renew SSL/TLS certificates at no additional cost, enabling HTTPS without manual certificate management.

Answer

Amazon EC2 + Elastic Load Balancing

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AWS Amplify only

Answer

Amazon Lightsail + Route 53

Question 14

Which AWS service provides a fully managed NoSQL database designed for single-digit millisecond performance at any scale?

Accepted Answer

Amazon DynamoDB. Amazon DynamoDB is a fully managed NoSQL key-value and document database that delivers consistent single-digit millisecond latency at any scale. It achieves this through its distributed architecture, automatic partitioning, and SSD-backed storage, making it ideal for high-traffic web applications, gaming, and IoT workloads.

Answer

Amazon RDS

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Amazon Redshift

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Amazon ElastiCache

Question 15

Which AWS service is used to send emails, SMS messages, and push notifications to subscribers in a publish/subscribe pattern?

Accepted Answer

Amazon SNS. Amazon Simple Notification Service (SNS) is a fully managed pub/sub messaging service that enables you to send messages to a large number of subscribers via multiple protocols, including email (JSON/plain text), SMS (text messages), and push notifications to mobile devices. It decouples message producers from consumers by using topics, where each topic can have multiple subscriber endpoints that receive messages asynchronously.

Answer

Amazon SES

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Amazon Pinpoint

Answer

Amazon SQS