CLF-C02 Cloud Technology and Services Practice Test 8 — 15 Questions

Question 1

A company is migrating its legacy Java web application to AWS. The application consists of a stateless web tier that receives HTTP traffic. The company wants to minimize operational overhead. The development team wants to simply upload a WAR file and have AWS automatically handle the deployment, capacity provisioning, load balancing, and auto-scaling based on traffic. The team does not want to manage the underlying EC2 instances or configure the load balancer manually. Which AWS service should the company use?

Accepted Answer

AWS Elastic Beanstalk. AWS Elastic Beanstalk is the correct choice because it provides a Platform as a Service (PaaS) offering that automatically handles deployment, capacity provisioning, load balancing, and auto-scaling for Java web applications. The team can simply upload a WAR file, and Elastic Beanstalk manages the underlying EC2 instances and Application Load Balancer (ALB) without requiring manual configuration. This directly meets the requirement to minimize operational overhead while supporting stateless web tiers.

Answer

Amazon EC2 Auto Scaling

Answer

AWS OpsWorks

Answer

Amazon Lightsail

Question 2

A company runs a globally distributed multiplayer game on AWS. The game uses UDP for real-time communication and requires static IP addresses that do not change for whitelisting by internet service providers. The company needs to route traffic to the nearest healthy application endpoint to minimize latency and improve performance. The solution must work with both TCP and UDP traffic and provide static IP addresses. Which AWS service should the company use?

Accepted Answer

AWS Global Accelerator. AWS Global Accelerator provides static IP addresses that serve as fixed entry points to your application, and it uses the AWS global network to route traffic to the nearest healthy endpoint via Anycast. It supports both TCP and UDP traffic, making it ideal for real-time UDP-based gaming workloads that require low latency and static IPs for ISP whitelisting.

Answer

Amazon CloudFront

Answer

Amazon Route 53

Answer

AWS Direct Connect

Question 3

A company runs a data analytics workload on a cluster of Amazon EC2 instances. The application requires a shared file system that can be mounted by multiple EC2 instances simultaneously. The workload is bursty: during data processing jobs, the instances write and read large datasets, but between jobs the file system is mostly idle. The company wants a fully managed, highly available, and durable file storage solution that automatically scales capacity up and down and charges only for the storage used. The solution must be accessible from EC2 instances across multiple Availability Zones in the same AWS Region. Which AWS service should the company use?

Accepted Answer

Amazon Elastic File System (EFS). Amazon EFS is a fully managed, highly available, and durable NFS file system that automatically scales storage capacity up and down as files are added or removed, charging only for the storage used. It can be mounted by multiple EC2 instances across different Availability Zones simultaneously, making it ideal for bursty, shared-file workloads that require concurrent access and automatic scaling.

Answer

Amazon Elastic Block Store (EBS) with Multi-Attach enabled

Answer

Amazon Simple Storage Service (S3)

Answer

Amazon FSx for Windows File Server

Question 4

A company ingests sensor data from IoT devices into an Amazon S3 bucket. The data is accessed frequently for the first 30 days, but after that, it is rarely queried. The company’s compliance policy requires all data to be retained for 7 years. The company wants to minimize storage costs by automatically moving data to more cost-effective storage classes as it ages, without any manual intervention. Which Amazon S3 feature should the company configure to meet these requirements?

Accepted Answer

S3 Lifecycle policy. An S3 Lifecycle policy automates the transition of objects between storage classes based on age. By configuring a lifecycle rule to move objects to S3 Standard-IA or S3 One Zone-IA after 30 days, and then to S3 Glacier Deep Archive after a longer period, the company can meet the 7-year retention requirement while minimizing costs without manual intervention.

Answer

S3 Object Lock

Answer

S3 Replication

Answer

S3 Transfer Acceleration

Question 5

A company runs a web application on Amazon EC2 instances that connect to a relational database. The application requires high database availability so that if the primary database instance fails, a standby instance automatically takes over without manual intervention. The company wants to minimize administrative overhead for database patching, backups, and replication. Which AWS service should the company use to meet these requirements?

Accepted Answer

Amazon RDS Multi-AZ. Amazon RDS Multi-AZ provides high availability by automatically provisioning and maintaining a synchronous standby replica in a different Availability Zone. If the primary database instance fails, Amazon RDS automatically fails over to the standby, ensuring minimal downtime without manual intervention. Additionally, RDS handles patching, backups, and replication automatically, reducing administrative overhead.

Answer

Amazon RDS Single-AZ

Answer

Amazon DynamoDB Global Tables

Answer

Amazon S3

Question 6

A company has a global user base that uploads images to an Amazon S3 bucket in the us-east-1 Region. Users report slow upload speeds and frequent timeouts when uploading large files from distant locations. The company wants to use the AWS global network and edge locations to accelerate uploads to the S3 bucket. The solution must require minimal infrastructure changes on the client side and must be configured at the bucket level. Which AWS feature should the company enable?

Accepted Answer

Amazon S3 Transfer Acceleration. Amazon S3 Transfer Acceleration (A) uses AWS edge locations to route uploads over the AWS global network, reducing latency and timeouts for large files from distant locations. It is enabled at the bucket level and requires only a simple client-side change (using the accelerated endpoint instead of the standard S3 endpoint), meeting the requirement for minimal client-side modifications.

Answer

Amazon CloudFront with an origin access identity

Answer

AWS Global Accelerator using a custom routing accelerator

Answer

Amazon S3 cross-region replication

Question 7

A fast-growing mobile game company uses a NoSQL database to store player profiles, leaderboards, and game state. The database must deliver consistent single-digit millisecond response times regardless of the number of concurrent players. The company wants a fully managed service that automatically scales throughput capacity up and down based on traffic and replicates data across multiple Availability Zones for high availability. Which AWS service should the company use?

Accepted Answer

Amazon DynamoDB. Amazon DynamoDB is a fully managed NoSQL database service that delivers consistent single-digit millisecond latency at any scale. It supports automatic scaling of throughput capacity based on traffic patterns and replicates data across multiple Availability Zones (AZs) for high availability and durability, making it the ideal choice for a fast-growing mobile game company.

Answer

Amazon RDS for MySQL

Answer

Amazon Redshift

Answer

Amazon ElastiCache for Redis

Question 8

A company runs a web application that processes customer orders. During flash sales, the application's backend servers become overwhelmed because orders are submitted faster than they can be processed. The company needs a fully managed, highly available service that can buffer incoming orders so that the backend can process them at its own pace without losing any data. The service must automatically scale to handle any volume of orders without requiring manual provisioning. Which AWS service meets these requirements?

Accepted Answer

Amazon Simple Queue Service (Amazon SQS). Amazon Simple Queue Service (SQS) is a fully managed, highly available message queuing service that decouples application components. It buffers incoming orders by storing them in a queue, allowing the backend to process messages at its own pace without losing data. SQS automatically scales to handle any volume of messages, eliminating the need for manual provisioning.

Answer

Amazon Simple Notification Service (Amazon SNS)

Answer

Amazon Kinesis Data Streams

Answer

Amazon MQ

Question 9

A company runs a web application across multiple Amazon EC2 instances that are distributed across several Availability Zones. The application needs to share a common set of configuration files and static assets that must be accessible concurrently and consistently from all instances. The company wants a fully managed, scalable file storage solution that does not require provisioning or managing underlying storage hardware. Which AWS service should the company use?

Accepted Answer

Amazon Elastic File System (EFS). Amazon EFS provides a fully managed, scalable, and shared file system that can be mounted concurrently by multiple EC2 instances across different Availability Zones. It uses the NFSv4.1 protocol, ensuring consistent access to configuration files and static assets without any provisioning or management of underlying storage hardware.

Answer

Amazon Elastic Block Store (EBS)

Answer

Amazon Simple Storage Service (S3)

Answer

Amazon Relational Database Service (RDS)

Question 10

A company is developing a microservices application using Docker containers. The development team wants to deploy and run these containers on AWS without having to provision or manage any underlying EC2 instances. Additionally, the team does not want to manage the container orchestration control plane. They need a fully serverless compute engine for containers that automatically scales based on demand. Which AWS compute option should the team use?

Accepted Answer

Amazon ECS with the AWS Fargate launch type. Amazon ECS with the AWS Fargate launch type is the correct choice because it provides a fully serverless compute engine for containers. Fargate eliminates the need to provision or manage EC2 instances and removes the burden of managing the container orchestration control plane, as AWS handles both the underlying infrastructure and the orchestration layer. It automatically scales container instances based on demand, meeting the team's requirement for a serverless, auto-scaling container solution.

Answer

Amazon EC2 instances with Docker installed

Answer

AWS Lambda

Answer

Amazon EKS with managed node groups

Question 11

A media company runs a website that serves video content globally. Users request video previews, which require the generation of thumbnail images on-the-fly. The company wants to generate these thumbnails at AWS edge locations so that the processing occurs close to users, reducing latency and offloading the origin servers. The solution must run custom code in response to CloudFront events without provisioning any servers. Which AWS service should the company use to meet these requirements?

Accepted Answer

AWS Lambda@Edge. AWS Lambda@Edge is the correct service because it allows you to run custom code in response to CloudFront events (such as viewer request, origin request, viewer response, and origin response) at AWS edge locations, enabling on-the-fly thumbnail generation close to users without provisioning any servers. This reduces latency and offloads origin servers, meeting the requirement for serverless edge processing.

Answer

AWS Lambda

Answer

Amazon EC2 instances in an Auto Scaling group

Answer

Amazon ElastiCache

Question 12

A company runs a read-heavy web application on Amazon EC2 instances that queries an Amazon RDS database. As traffic grows, the database CPU utilization is consistently high, causing slow response times for users. The company wants to reduce the load on the database by caching frequently accessed query results. They need a fully managed, in-memory caching service that can be set up quickly and integrates with common programming languages. Which AWS service should they use?

Accepted Answer

Amazon ElastiCache. Amazon ElastiCache is a fully managed, in-memory caching service that supports Redis and Memcached, both of which integrate with common programming languages via standard client libraries. It can be deployed quickly to cache frequently accessed database query results, offloading read traffic from the Amazon RDS instance and reducing CPU utilization.

Answer

Amazon DynamoDB Accelerator (DAX)

Answer

Amazon CloudFront

Answer

Amazon S3 Transfer Acceleration

Question 13

A company runs a multi-tier web application on Amazon EC2 instances across multiple Availability Zones. The application has separate backend services for serving images and handling API requests, each running on different sets of EC2 instances. The company needs a load balancer that can inspect incoming HTTP/HTTPS requests and route them to the correct target group based on the URL path (e.g., /images to one group, /api to another). The solution must also offload SSL/TLS termination and perform health checks on the instances. Which AWS service should the company use?

Accepted Answer

Application Load Balancer. The Application Load Balancer (ALB) operates at Layer 7 of the OSI model, allowing it to inspect HTTP/HTTPS headers and route traffic based on URL path patterns (e.g., /images vs /api). It natively supports SSL/TLS termination and can perform health checks on target instances, making it the correct choice for this multi-tier web application.

Answer

Network Load Balancer

Answer

Classic Load Balancer

Answer

AWS CloudFront

Question 14

A media company streams live video to a global audience. The application runs on Application Load Balancers in two AWS Regions (us-east-1 and eu-west-1). The company's clients require the use of a fixed set of static IP addresses for firewall allowlisting. The company needs to route user traffic to the nearest healthy endpoint to minimize latency. Which AWS service should the company use?

Accepted Answer

AWS Global Accelerator. AWS Global Accelerator provides two static Anycast IP addresses that serve as fixed entry points for traffic, which are then routed over the AWS global network to the nearest healthy endpoint (e.g., Application Load Balancer in us-east-1 or eu-west-1). This minimizes latency by directing users to the closest Region while preserving the static IPs required for firewall allowlisting. Unlike CloudFront, Global Accelerator does not cache content and is optimized for TCP/UDP traffic, making it ideal for live video streaming where low latency and static IPs are critical.

Answer

Amazon CloudFront

Answer

Network Load Balancer

Answer

Amazon Route 53 latency-based routing

Question 15

A company manages a fleet of hundreds of Amazon EC2 instances running across multiple AWS Regions. The company's security policy requires that all instances be patched with the latest security updates within 7 days of release. The operations team currently logs in to each instance manually to apply patches, which is time-consuming and error-prone. The team wants to automate the patching process, track compliance across all instances, and receive reports on patch status. The solution must not require any changes to the existing application code or the use of additional third-party software. Which AWS service should the operations team use to meet these requirements?

Accepted Answer

AWS Systems Manager. AWS Systems Manager is the correct choice because it provides Patch Manager, a native capability that automates the patching of EC2 instances across multiple Regions without requiring any changes to application code or third-party software. It also integrates with Systems Manager Compliance to track patch status and generate reports, meeting all stated requirements.

Answer

AWS Config

Answer

Amazon Inspector

Answer

AWS Trusted Advisor