CLF-C02 Practice Test 47 — 15 Questions

Question 1

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?

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

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.

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Amazon CloudFront

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Network Load Balancer

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Amazon Route 53 latency-based routing

Question 2

A company runs a microservices-based e-commerce application on AWS. During peak hours, the order processing service often gets overwhelmed because the web frontend sends requests directly to it. This causes delays and occasional failures. The architecture team needs to decouple the frontend from the order processing service by introducing a fully managed, highly available, and durable message queue. The queue must automatically replicate messages across multiple Availability Zones and allow the order processing service to pull messages at its own pace. Which AWS service should the company use?

Accepted Answer

Amazon Simple Queue Service (SQS). Amazon Simple Queue Service (SQS) is the correct choice because it is a fully managed, highly available, and durable message queue service that automatically replicates messages across multiple Availability Zones (AZs) to ensure fault tolerance. It decouples the web frontend from the order processing service, allowing the latter to poll and process messages at its own pace, which prevents overload during peak hours. SQS provides at-least-once delivery and supports standard queues with high throughput, making it ideal for this use case.

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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 development team needs to deploy a web application on AWS quickly. The team wants a fully managed service that automatically handles capacity provisioning, load balancing, auto-scaling, and application health monitoring. The team does not want to manage the underlying Amazon EC2 instances or the application stack manually. Which AWS service should the team use?

Accepted Answer

AWS Elastic Beanstalk. AWS Elastic Beanstalk is the correct choice because it is a fully managed Platform as a Service (PaaS) that automatically handles capacity provisioning, load balancing, auto-scaling, and application health monitoring without requiring the team to manage the underlying EC2 instances or application stack. It abstracts away infrastructure management, allowing developers to simply upload their code and have the service handle deployment, scaling, and monitoring out of the box.

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AWS CloudFormation

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AWS OpsWorks

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Amazon EC2 Auto Scaling

Question 4

A company runs a microservices application on AWS. It needs to send real-time alerts to mobile devices via push notifications and to administrators via email whenever a critical event occurs. The solution must be a fully managed service that supports both delivery channels without requiring separate infrastructure for each. Which AWS service should the company use?

Accepted Answer

Amazon Simple Notification Service (SNS). Amazon SNS is a fully managed pub/sub messaging service that supports multiple delivery protocols, including push notifications to mobile devices (via Apple Push Notification Service, Firebase Cloud Messaging, etc.) and email (via SMTP or HTTP endpoints). This allows the company to send real-time alerts through both channels from a single service without provisioning separate infrastructure for each.

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Amazon Simple Queue Service (SQS)

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Amazon Simple Email Service (SES)

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Amazon Pinpoint

Question 5

A company has been using Amazon EC2 instances for a production application for the past 12 months. The finance team wants to understand historical spending patterns and identify opportunities to reduce costs. Specifically, they need to see which EC2 instance families and sizes are being underutilized and get recommendations for purchasing Reserved Instances to save money compared to current On-Demand pricing. The team wants to use a native AWS tool that provides a visual dashboard of costs, usage trends, and actionable recommendations. Which AWS tool should the finance team use?

Accepted Answer

AWS Cost Explorer. AWS Cost Explorer is the correct choice because it provides a visual dashboard of historical cost and usage data, including the ability to filter by EC2 instance families and sizes to identify underutilized resources. It also offers Reserved Instance (RI) purchase recommendations based on historical On-Demand usage, enabling the finance team to compare costs and identify savings opportunities directly within the native AWS console.

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AWS Budgets

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AWS Trusted Advisor

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AWS Compute Optimizer

Question 6

A company has a development environment running on Amazon EC2 instances. To control costs, the team wants to set a monthly budget of $5,000 for this environment. If the forecasted cost for the month exceeds $6,000 (20% over budget), they want AWS to automatically stop all non-critical EC2 instances to prevent further spending. Which AWS feature should the team use to implement this automated cost control?

Accepted Answer

AWS Budgets with budget actions. AWS Budgets with budget actions allows you to set a monthly budget of $5,000 and define an action that triggers when the forecasted cost exceeds a specified threshold (e.g., 20% over budget, or $6,000). The action can automatically stop non-critical EC2 instances using an IAM role and a predefined runbook, directly enforcing cost control without manual intervention. This is the only AWS feature that combines budget monitoring with automated remediation actions.

Answer

AWS Cost Explorer

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AWS Trusted Advisor

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AWS Cost Anomaly Detection

Question 7

A company wants all IAM users to verify their identity with both a password and a one-time code from an authenticator app before accessing the AWS Management Console. Which security control should the company enable?

Accepted Answer

Multi-Factor Authentication (MFA). Multi-Factor Authentication (MFA) is the correct security control because it requires users to present two independent factors: something they know (password) and something they have (a one-time code from an authenticator app). This satisfies the company's requirement for both a password and a one-time code before accessing the AWS Management Console, significantly reducing the risk of unauthorized access even if a password is compromised.

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AWS Shield

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AWS WAF

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Amazon Cognito

Question 8

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.

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Amazon EC2 instances with Docker installed

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AWS Lambda

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Amazon EKS with managed node groups

Question 9

According to the AWS Well-Architected Framework, what does the Performance Efficiency pillar primarily focus on?

Accepted Answer

Using computing resources efficiently to meet performance requirements. The Performance Efficiency pillar of the AWS Well-Architected Framework focuses on using computing resources efficiently to meet system requirements and maintain that efficiency as demand changes and technologies evolve. This includes selecting the right resource types and sizes, monitoring performance, and making architectural trade-offs to optimize for speed and throughput.

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Protecting information and systems from unauthorized access

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Minimizing the cost of running cloud workloads

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Automating operational tasks to reduce human error

Question 10

Which cloud computing characteristic allows a company to pay only for the compute resources they actually use, without upfront commitments?

Accepted Answer

Pay-as-you-go pricing. Pay-as-you-go pricing is the cloud computing characteristic that enables a company to pay only for the compute resources they actually consume, with no upfront commitments or long-term contracts. This model aligns costs directly with usage, allowing organizations to avoid capital expenditure and scale spending based on demand. AWS implements this through services like EC2 On-Demand instances, where billing is per second (or per hour) with no minimum purchase required.

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High availability

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Elasticity

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Economies of scale

Question 11

A company has a monthly budget of $10,000 for its development AWS account. The project manager wants to receive an automated email alert when the actual costs for the current month reach 80% of the budget. The project manager does not want to build any custom code or manage any infrastructure for this alert. Which approach should the project manager take to meet these requirements?

Accepted Answer

Create a budget in AWS Budgets for the account, set the budget amount to $10,000, configure an alert for actual cost at 80% of the budget amount, and specify an email address to receive the notification.. AWS Budgets allows you to set a monthly budget of $10,000 and configure an alert to trigger when actual costs reach 80% ($8,000). The alert can send an email notification directly without requiring any custom code or infrastructure management, meeting the project manager's requirements exactly.

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Create a cost allocation tag in the Billing and Cost Management console, then configure an Amazon SNS topic to send an email when the tag's cost reaches $8,000.

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Create a usage report in AWS Cost Explorer, set a forecast alert at 80% of the monthly budget, and configure the report to be sent via email.

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Create an AWS Lambda function that queries the AWS Cost Explorer API daily, compares actual cost to the budget, and sends an email if costs exceed $8,000.

Question 12

Which AWS service is a fully managed data warehousing service optimized for online analytical processing (OLAP) of large datasets?

Accepted Answer

Amazon Redshift. Amazon Redshift is a fully managed, petabyte-scale data warehouse service designed specifically for online analytical processing (OLAP) of large datasets. It uses columnar storage, massively parallel processing (MPP), and data compression to deliver fast query performance on structured and semi-structured data, making it the correct choice for OLAP workloads.

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Amazon RDS

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Amazon DynamoDB

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Amazon Aurora

Question 13

A company is using Amazon EC2 and wants to understand the difference between Compute Savings Plans and EC2 Instance Savings Plans. Which statement is accurate?

Accepted Answer

Compute Savings Plans apply to any EC2 instance, Fargate, and Lambda usage, while EC2 Instance Savings Plans apply to a specific instance family and region. Compute Savings Plans offer the broadest flexibility, automatically applying to any EC2 instance (regardless of family, size, or region), as well as AWS Fargate and AWS Lambda usage. In contrast, EC2 Instance Savings Plans are restricted to a specific instance family within a chosen region, providing a narrower scope of coverage. This distinction is fundamental to understanding how each plan optimizes costs based on workload flexibility.

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Compute Savings Plans provide higher discounts than EC2 Instance Savings Plans

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EC2 Instance Savings Plans are more flexible and apply across all instance families

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Both Savings Plans types require specifying the exact instance size at purchase

Question 14

A company is building a data lake on AWS. Which AWS service provides a serverless interactive query service that allows analysts to query data stored in Amazon S3 using standard SQL?

Accepted Answer

Amazon Athena. Amazon Athena is a serverless interactive query service that enables analysts to query data stored in Amazon S3 using standard SQL. It requires no infrastructure management, as Athena automatically scales and executes queries directly against data in S3, making it the ideal choice for ad-hoc analysis on a data lake.

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Amazon Redshift

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Amazon EMR

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AWS Glue

Question 15

A company runs its web application on a fleet of Amazon EC2 instances. The operations team does not know which specific physical servers host their instances, nor does the team have any control over the underlying hardware. However, the team can be confident that if one physical server fails, AWS will automatically launch replacement instances on different hosts. The team can also specify the general geographic region (e.g., us-west-2) but not the exact data center. This scenario best describes which essential characteristic of cloud computing?

Accepted Answer

Resource pooling. Resource pooling is correct because the scenario describes how the cloud provider's physical and virtual resources (servers, hosts, data centers) are aggregated into a shared pool to serve multiple customers. The operations team cannot control or know the exact physical host or data center, but AWS abstracts that complexity and can automatically launch replacement instances on different hosts if one fails. This multi-tenant model, where the customer has no visibility or control over the underlying physical location beyond a high-level region, is the defining characteristic of resource pooling.

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Rapid elasticity

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Measured service

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On-demand self-service