CLF-C02 Cloud Concepts Practice Test 11 — 15 Questions

Question 1

A solutions architect is reviewing an application design to ensure the system can automatically recover from failures, scale horizontally to increase availability, and prevent failures from cascading to other components. Which pillar of the AWS Well-Architected Framework is the architect applying?

Accepted Answer

Reliability. The question focuses on automatic recovery from failures, horizontal scaling for availability, and preventing cascading failures. These are core design principles of the Reliability pillar, which ensures a workload performs its intended function correctly and consistently when expected. The Reliability pillar specifically addresses foundations like distributed system design, recovery procedures, and change management to handle and recover from infrastructure or service disruptions.

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Performance Efficiency

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Operational Excellence

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Security

Question 2

An operations team documents all operational procedures as runbooks, deploys infrastructure using AWS CloudFormation templates stored in version control, and continuously refines their processes based on lessons learned from incidents. Which pillar of the AWS Well-Architected Framework does this represent?

Accepted Answer

Operational Excellence. Operational Excellence focuses on running and monitoring systems to deliver business value, and continually improving processes and procedures. Documenting runbooks, using infrastructure as code (CloudFormation) with version control, and refining processes from incident lessons are core practices of this pillar, as they enable repeatable, auditable, and continuously improving operations.

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Reliability

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Security

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Cost Optimisation

Question 3

A solutions architect is reviewing a system to ensure the right instance types are selected for each workload, that resource selection is based on data rather than assumptions, and that performance is monitored and improved over time. Which pillar of the AWS Well-Architected Framework is being applied?

Accepted Answer

Performance Efficiency. The Performance Efficiency pillar focuses on using computing resources efficiently to meet system requirements and maintaining that efficiency as demand changes and technologies evolve. The scenario describes selecting instance types based on data, monitoring performance, and iteratively improving—all core activities of this pillar. It directly aligns with the AWS Well-Architected Framework's design principle of 'democratizing advanced technologies' and the pillar's focus on right-sizing and continuous improvement.

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Reliability

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Cost Optimisation

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Operational Excellence

Question 4

A finance team works with architects to eliminate unused EC2 instances, right-size over-provisioned resources, replace On-Demand instances with Reserved Instances for stable workloads, and adopt managed services to reduce operational overhead. Which AWS Well-Architected Framework pillar guides these activities?

Accepted Answer

Cost Optimisation. Option C is correct because the Cost Optimization pillar of the AWS Well-Architected Framework focuses on eliminating unused resources, right-sizing over-provisioned instances, using Reserved Instances for predictable workloads, and adopting managed services to reduce operational overhead. These activities directly target cost efficiency by aligning resource usage with demand and avoiding waste.

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Operational Excellence

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Reliability

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Security

Question 5

A company needs to deploy their application in multiple geographic locations to ensure data sovereignty compliance and reduce latency for users in different continents. What is the AWS infrastructure concept that represents a distinct geographic area with multiple isolated locations?

Accepted Answer

AWS Region. An AWS Region is a distinct geographic area that contains multiple, isolated Availability Zones. This design allows customers to deploy applications across separate locations within a region for high availability, while also choosing specific regions to meet data sovereignty requirements and reduce latency for users on different continents.

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Availability Zone

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Edge Location

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Local Zone

Question 6

A company deploys their web application across multiple isolated locations within the same AWS Region, each with independent power, cooling, and networking. This design ensures that a failure in one location does not affect the others. What are these isolated locations called?

Accepted Answer

Availability Zones. Availability Zones (AZs) are isolated locations within an AWS Region that consist of one or more data centers with independent power, cooling, and networking. This design ensures that a failure in one AZ does not affect the others, providing high availability and fault tolerance for applications. The scenario directly describes the defining characteristics of an Availability Zone.

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AWS Regions

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Edge Locations

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VPC Subnets

Question 7

Amazon CloudFront serves cached content to users from the closest possible network point, with over 400 such points globally. What are these network points called?

Accepted Answer

Edge Locations. Amazon CloudFront uses a global network of edge locations to cache and serve content to users with low latency. These edge locations are distinct from AWS Regions and Availability Zones, as they are specifically designed for content delivery rather than compute or storage. Option C correctly identifies these network points as Edge Locations.

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Availability Zones

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AWS Regions

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Local Zones

Question 8

A company wants to migrate 50 virtual machines from their on-premises data centre to AWS as quickly as possible to reduce data centre costs. They plan to move the VMs without making any changes to the applications. Which cloud migration strategy does this represent?

Accepted Answer

Rehost. Option C (Rehost) is correct because the company is migrating 50 virtual machines to AWS without making any changes to the applications, which is the defining characteristic of a 'lift and shift' migration. This strategy involves moving the VMs as-is, typically using AWS Server Migration Service (SMS) or AWS Application Migration Service (AWS MGN), to quickly reduce on-premises data center costs without application refactoring.

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Refactor

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Replatform

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Retire

Question 9

A startup can now test a new application idea by provisioning cloud resources in minutes, run the experiment for a week, and tear down the resources if the idea fails — spending only a few dollars. Previously, the same experiment would have required months of procurement and significant capital expenditure. Which cloud benefit does this illustrate?

Accepted Answer

Increased agility. Option D is correct because the scenario describes the ability to rapidly provision, experiment with, and decommission cloud resources in minutes, which directly illustrates increased agility. Agility in cloud computing refers to the speed at which resources can be deployed, scaled, and released, enabling fast experimentation without long procurement cycles.

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Economies of scale

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Elimination of capital expense

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Global reach

Question 10

AWS can offer lower pay-as-you-go pricing than a single company could achieve operating its own data centre because AWS aggregates usage from hundreds of thousands of customers. Which cloud computing benefit does this describe?

Accepted Answer

Benefit from massive economies of scale. The scenario describes AWS aggregating usage from hundreds of thousands of customers to achieve lower per-unit costs than a single company could achieve operating its own data center. This is the direct definition of economies of scale, where the massive scale of AWS's infrastructure (e.g., purchasing power for hardware, optimized data center design) reduces the average cost per customer, enabling lower pay-as-you-go pricing.

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Trade capital expense for variable expense

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Increase speed and agility

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Go global in minutes

Question 11

Before moving to AWS, a company over-provisioned their data centre servers to handle projected peak traffic, resulting in expensive idle capacity most of the time. After migrating, the company uses Auto Scaling to match capacity exactly to actual demand. Which cloud benefit does this represent?

Accepted Answer

Stop guessing about capacity. Option C is correct because the scenario directly describes the cloud benefit of 'Stop guessing about capacity.' Before AWS, the company over-provisioned servers to handle projected peak traffic, leading to idle capacity. With Auto Scaling, AWS dynamically adjusts compute resources to match actual demand, eliminating the need to predict capacity in advance.

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Trade capital expense for variable expense

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Benefit from economies of scale

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Increase speed and agility

Question 12

A company wants to deploy their application to users in North America, Europe, and Asia Pacific to reduce latency. Using AWS, they can provision infrastructure in new geographic regions within minutes using the same tools and templates. Which cloud benefit does this illustrate?

Accepted Answer

Go global in minutes. Option C is correct because the scenario describes deploying infrastructure across multiple geographic regions (North America, Europe, Asia Pacific) using the same tools and templates, which directly illustrates the 'Go global in minutes' benefit of AWS. This benefit leverages AWS's global infrastructure—such as Regions, Availability Zones, and CloudFront edge locations—to reduce latency for users worldwide without the need to negotiate with data center providers or build physical facilities.

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Increased agility

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Trade capital expense for variable expense

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Stop guessing about capacity

Question 13

A solutions architect implements IAM least-privilege policies, enables encryption for all data at rest and in transit, configures VPC security groups and NACLs to limit network access, and sets up automated security incident detection. Which Well-Architected Framework pillar covers these activities?

Accepted Answer

Security. The Security pillar of the AWS Well-Architected Framework focuses on protecting data, systems, and assets through identity and access management (IAM least-privilege policies), data protection (encryption at rest and in transit), infrastructure protection (VPC security groups and NACLs), and detective controls (automated security incident detection). These activities directly map to the Security pillar's design principles and best practices.

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Operational Excellence

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Reliability

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Cost Optimisation

Question 14

A company used to spend $2 million upfront purchasing servers and building a data centre before launching a new product. With AWS, they provision resources as needed and pay monthly based on actual usage. Which cloud benefit does this represent?

Accepted Answer

Trade capital expense for variable expense. This scenario describes shifting from a large upfront capital expenditure (CapEx) on servers and data centers to a variable operational expenditure (OpEx) based on actual usage. AWS's pay-as-you-go model directly enables this trade, allowing the company to align costs with consumption rather than paying for idle capacity. This is the core benefit of trading capital expense for variable expense.

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Stop guessing about capacity

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Benefit from economies of scale

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Increase speed and agility

Question 15

A company's leadership team wants a structured framework for planning their AWS cloud migration that addresses organisational change management, skills development, governance, platform, security, and operations. Which AWS framework provides guidance across these perspectives?

Accepted Answer

AWS Cloud Adoption Framework (CAF). The AWS Cloud Adoption Framework (CAF) is specifically designed to guide organizations through their cloud migration journey by providing structured guidance across six core perspectives: Business, People, Governance, Platform, Security, and Operations. This framework directly addresses the leadership team's requirements for organizational change management, skills development, governance, platform, security, and operations, making it the correct choice.

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AWS Well-Architected Framework

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AWS Migration Hub

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AWS Trusted Advisor