CLF-C02 Cloud Technology and Services Practice Test 10 — 15 Questions

Question 1

A company hosts its corporate website entirely as static content (HTML, CSS, JavaScript, images) in an Amazon S3 bucket. The website currently has no authentication requirements and is accessible to the public. The company wants to serve this content to users around the world with low latency. Additionally, the company wants to enforce HTTPS for all traffic using a custom domain name (www.example.com). The company does not want to manage SSL/TLS certificates on any servers. Which AWS service should the company use to meet these requirements?

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

Accepted Answer

Amazon CloudFront. Amazon CloudFront is a content delivery network (CDN) that caches static content at edge locations worldwide, reducing latency for global users. It supports custom domain names and can enforce HTTPS by using AWS Certificate Manager (ACM) to provision and renew SSL/TLS certificates automatically, eliminating the need for server-side certificate management. CloudFront integrates directly with an S3 bucket as the origin, allowing the bucket to remain private while serving content securely via HTTPS.

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AWS Global Accelerator

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Amazon S3 Transfer Acceleration

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AWS Lambda@Edge

Question 2

A company is refactoring its monolithic e-commerce application into multiple microservices. The order-processing service must send messages to the inventory service to reserve stock. The company needs a fully managed service that can durably store these messages, handle high throughput, and allow the inventory service to poll for messages at its own pace. The company wants to avoid any message loss. Which AWS service should the company use?

Accepted Answer

Amazon Simple Queue Service (SQS). Amazon SQS is the correct choice because it is a fully managed message queuing service that durably stores messages across multiple Availability Zones, ensuring no message loss. It supports high throughput and allows the inventory service to poll for messages at its own pace using long or short polling, decoupling the order-processing and inventory services.

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Amazon Simple Notification Service (SNS)

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Amazon Kinesis Data Streams

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Amazon MQ

Question 3

A company operates multiple Amazon VPCs across several AWS accounts for different business units. The company also has an on-premises data center connected to AWS via AWS Direct Connect. The network team wants to simplify the connectivity between all VPCs and the on-premises network. Currently, they manage individual VPC peering connections, which is becoming complex as more VPCs are added. They need a single network hub that can scale to connect hundreds of VPCs and the on-premises network, with centralized routing management. Which AWS service should the network team use?

Accepted Answer

AWS Transit Gateway. AWS Transit Gateway acts as a single, scalable network hub that connects multiple VPCs and on-premises networks via Direct Connect, using a centralized routing table. This eliminates the need for complex, meshed VPC peering connections and provides transitive routing across all attached networks, which directly addresses the requirement for a hub that scales to hundreds of VPCs.

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Amazon VPC peering

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AWS PrivateLink

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AWS Site-to-Site VPN

Question 4

A company operates an e-commerce website that sends transactional emails such as order confirmations, password reset links, and shipping updates to customers. The company expects email volume to grow significantly during promotional events. The development team wants a fully managed AWS service that can reliably send high volumes of transactional emails, provide real-time tracking of bounces and complaints, and allow integration through a simple API. The team does not want to manage any email servers. Which AWS service should the team use?

Accepted Answer

Amazon Simple Email Service (Amazon SES). Amazon Simple Email Service (Amazon SES) is a fully managed, cloud-based email sending service designed specifically for sending transactional and marketing emails at high volume. It provides a simple API for integration, real-time tracking of bounces, complaints, and deliveries via Amazon CloudWatch and Amazon SNS notifications, and eliminates the need to manage any email servers. This makes it the ideal choice for the e-commerce company's requirements.

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Amazon Simple Notification Service (Amazon SNS)

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Amazon Simple Queue Service (Amazon SQS)

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Amazon Pinpoint

Question 5

A company runs a web application on a fleet of Amazon EC2 instances behind an Application Load Balancer (ALB). The application serves dynamic content that changes frequently, but also serves static assets (CSS, JavaScript, images) that change rarely. The company wants to improve the overall performance and reduce the load on the EC2 instances by caching the static assets at edge locations while still routing dynamic requests to the ALB. Which combination of AWS services should the company use?

Accepted Answer

Use Amazon CloudFront with the ALB as the origin, and configure CloudFront to cache the static assets while forwarding dynamic requests to the ALB.. Amazon CloudFront can be configured with the ALB as the origin, allowing it to cache static assets (CSS, JavaScript, images) at edge locations while forwarding dynamic requests to the ALB. This reduces latency for users by serving cached content from the nearest edge location and offloads the EC2 instances from handling repeated requests for static files. CloudFront supports path-based caching behaviors, so you can define specific URL patterns (e.g., /static/*) to cache and others to forward directly to the ALB.

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Use Amazon Route 53 with latency-based routing to direct users to the closest ALB endpoint.

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Use Amazon S3 to host the entire application, and use the ALB to route traffic to the S3 bucket.

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Use AWS Global Accelerator to distribute traffic across multiple ALBs in different AWS Regions.

Question 6

A company runs an e-commerce application using Amazon RDS for MySQL. The database stores order and customer information. To achieve high availability, the company configures a Multi-AZ deployment. Which of the following describes a benefit of this configuration?

Accepted Answer

It automatically fails over to a standby instance in a different Availability Zone if the primary instance fails.. A Multi-AZ deployment for Amazon RDS automatically synchronously replicates data to a standby instance in a different Availability Zone. If the primary instance fails (due to hardware failure, AZ outage, or patching), Amazon RDS automatically performs a failover to the standby, promoting it to become the new primary. This provides high availability by minimizing downtime without requiring manual intervention.

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It automatically scales the database read capacity to handle traffic spikes.

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It creates read replicas in multiple Regions to reduce latency for global users.

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It encrypts data at rest using AWS KMS without any additional configuration.

Question 7

A company runs compute-intensive batch processing jobs that require high CPU performance. The workload is not memory-intensive and does not require GPU acceleration. Which Amazon EC2 instance family is the most appropriate choice?

Accepted Answer

Compute optimised (C family). The compute-optimized (C family) EC2 instances are designed for workloads that benefit from high-performance processors, such as batch processing, scientific modeling, and gaming servers. Since the job requires high CPU performance and is not memory-intensive or GPU-accelerated, the C family provides the best price-performance ratio for compute-bound tasks.

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Memory optimised (R family)

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Storage optimised (I family)

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Accelerated computing (P family)

Question 8

A company stores compliance logs in Amazon S3. After 90 days, logs are never accessed again but must be retained for 7 years to meet regulatory requirements. Which S3 storage class provides the lowest storage cost for this long-term archival requirement?

Accepted Answer

S3 Glacier Deep Archive. Amazon S3 Glacier Deep Archive is designed for long-term retention of data that is accessed extremely rarely, with a retrieval time of 12 hours or more. It offers the lowest storage cost among all S3 storage classes, making it the most cost-effective choice for compliance logs that must be retained for 7 years but are never accessed after 90 days.

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S3 Standard

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S3 Standard-IA

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S3 Glacier Flexible Retrieval

Question 9

A media company stores frequently accessed video thumbnails in Amazon S3. The thumbnails are read multiple times every day and must be highly available and durable. Which S3 storage class is most appropriate for this workload?

Accepted Answer

S3 Standard. S3 Standard is the most appropriate storage class because it offers high durability (99.999999999%) and high availability (99.99%) with low-latency access, making it ideal for frequently accessed, critical data like video thumbnails that are read multiple times daily. It provides automatic replication across a minimum of three Availability Zones, ensuring both high availability and durability without retrieval fees or minimum storage duration penalties.

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S3 One Zone-IA

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S3 Glacier Flexible Retrieval

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S3 Standard-IA

Question 10

A company wants to run a MySQL database in AWS without managing database software installation, applying patches, setting up backups, or configuring replication for high availability. Which AWS service meets these requirements?

Accepted Answer

Amazon RDS. Amazon RDS is a managed database service that automates database software installation, patching, backup, and replication for high availability. By choosing RDS for MySQL, the company offloads these administrative tasks to AWS, meeting the requirement to avoid manual management of the database software, patches, backups, and replication configuration.

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Amazon EC2 with a self-managed MySQL installation

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Amazon Redshift

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Amazon ElastiCache

Question 11

A gaming company needs a database that can handle millions of requests per second with consistent single-digit millisecond latency and automatically scales without any capacity planning. Which AWS database service meets these requirements?

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 automatically scales throughput capacity via on-demand mode, eliminating the need for capacity planning, and can handle millions of requests per second, making it ideal for high-traffic gaming workloads.

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Amazon RDS for MySQL

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Amazon Aurora

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Amazon Redshift

Question 12

A company wants to run code that automatically resizes images whenever a new image is uploaded to an Amazon S3 bucket. The code runs for less than 60 seconds per image. The company wants to pay only for the compute time used and does not want to provision or manage any servers. Which AWS service best meets these requirements?

Accepted Answer

AWS Lambda. AWS Lambda is the correct choice because it is a serverless compute service that runs code in response to events, such as an S3 object creation event, and automatically scales. It charges only for the compute time consumed (rounded to the nearest 1 ms) and requires no server provisioning or management. The 60-second execution limit per invocation is well within the 15-minute maximum duration of Lambda, making it ideal for short-lived image resizing tasks.

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Amazon EC2

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AWS Elastic Beanstalk

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Amazon ECS

Question 13

A solutions architect needs to isolate an application in its own virtual network within AWS, with full control over IP address ranges, subnet definitions, route tables, and internet gateway configuration. Which AWS service provides this capability?

Accepted Answer

Amazon VPC. Amazon VPC (Virtual Private Cloud) enables you to provision a logically isolated section of the AWS cloud where you can define your own IP address range (using CIDR notation, e.g., 10.0.0.0/16), create subnets, configure route tables, and attach an Internet Gateway for public internet access. This gives you full control over the virtual networking environment, exactly matching the requirement.

Answer

Amazon Route 53

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Amazon CloudFront

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AWS Direct Connect

Question 14

A company hosts a website in the US East (N. Virginia) AWS region. Users in Europe and Asia Pacific report slow page load times because content must travel long distances from the origin server. Which AWS service should the company deploy to reduce latency for global users?

Accepted Answer

Amazon CloudFront. Amazon CloudFront is a content delivery network (CDN) that caches static and dynamic content at edge locations worldwide, including Europe and Asia Pacific. By serving content from the edge location closest to each user, CloudFront significantly reduces latency and improves page load times for global users without requiring changes to the origin infrastructure.

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AWS Direct Connect

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Amazon Route 53 with latency routing

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Amazon VPC peering

Question 15

A company needs a service to translate domain names (like www.example.com) into IP addresses, check the health of their web servers, and automatically redirect traffic to a healthy backup server if the primary server fails. Which AWS service provides all of these capabilities?

Accepted Answer

Amazon Route 53. Amazon Route 53 is a DNS web service that translates domain names to IP addresses. It also offers health checks that monitor the availability of web servers and can automatically route traffic away from unhealthy endpoints to healthy ones using DNS failover routing policies.

Answer

Amazon VPC

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Amazon CloudFront

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AWS Direct Connect