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CLF-C02 Exam
AWS Certified Cloud Practitioner
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Topic 1, Exam Pool A
Questions & Answers PDF
Which database engine is compatible with Amazon RDS?
A. Apache Cassandra
B. MongoDB
C. Neo4j
D. PostgreSQL
A company needs to run code in response to an event notification that occurs when objects are
uploaded to an Amazon S3 bucket.
Which AWS service will integrate directly with the event notification?
A. AWS Lambda
B. Amazon EC2
C. Amazon Elastic Container Registry (Amazon ECR)
D. AWS Elastic Beanstalk
Explanation:
AWS Lambda is a service that lets you run code without provisioning or managing servers. You can
Explanation:
Amazon RDS supports six database engines: Amazon Aurora, MySQL, MariaDB, PostgreSQL, Oracle,
and SQL Server. Apache Cassandra, MongoDB, and Neo4j are not compatible with Amazon RDS.
Therefore, the correct answer is D. You can learn more about Amazon RDS and its supported
database engines
Page 2
Version:13.1
Question: 1
Question: 2
Answer: A
Answer: D
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A company wants to centrally manage security policies and billing services within a multi-account
AWS environment. Which AWS service should the company use to meet these requirements?
A. AWS Identity and Access Management (IAM)
B. AWS Organizations
C. AWS Resource Access Manager (AWS RAM)
D. AWS Config
What are the characteristics of Availability Zones? (Select TWO.)
A. All Availability Zones in an AWS Region are interconnected with high-bandwidth, low-latency
networking
B. Availability Zones are physically separated by a minimum of distance of 150 km (100 miles).
C. All traffic between Availability Zones is encrypted.
D. Availability Zones within an AWS Region share redundant power, networking, and connectivity.
E. Every Availability Zone contains a single data center.
Which AWS Well-Architected Framework concept represents a system's ability to remain functional
when the system encounters operational problems?
Explanation:
AWS Organizations is a service that helps you centrally manage and govern your environment as you
grow and scale your AWS resources. You can use AWS Organizations to create groups of accounts and
apply policies to them. You can also use AWS Organizations to consolidate billing for multiple
accounts. Therefore, the correct answer is B. You can learn more about AWS Organizations and its
features .
Explanation:
Availability Zones are physically separate locations within an AWS Region that are engineered to be
isolated from failures. Each Availability Zone has independent power, cooling, and physical security,
and is connected to other Availability Zones in the same Region by a low-latency network. Therefore,
the correct answers are A and D. You can learn more about Availability Zones and their characteristics
Questions & Answers PDF Page 3
use Lambda to process event notifications from Amazon S3 when objects are uploaded or deleted.
Lambda integrates directly with the event notification and invokes your code automatically.
Therefore, the correct answer is A.
Question: 3
Question: 4
Question: 5
Answer: B
Answer: A, D

Explanation:
A. Consistency
B. Elasticity
C. Durability
D. Latency
Which AWS service or tool does AWS Control Tower use to create resources?
A. AWS CloudFormation
B. AWS Trusted Advisor
C. AWS Directory Service
D. AWS Cost Explorer
Explanation:
The AWS Well-Architected Framework is a set of best practices and guidelines for designing and
operating systems in the cloud. The framework consists of five pillars: operational excellence,
security, reliability, performance efficiency, and cost optimization. The concept of elasticity
represents a system’s ability to adapt to changes in demand by scaling resources up or down
automatically. Therefore, the correct answer is B. You can learn more about the AWS Well-
Architected Framework and its pillars
What are some advantages of using Amazon EC2 instances lo host applications in the AWS Cloud
instead of on premises? (Select TWO.)
A. EC2 includes operating system patch management
B. EC2 integrates with Amazon VPC. AWS CloudTrail, and AWS Identity and Access Management
(IAM)
C. EC2 has a 100% service level agreement (SLA).
D. EC2 has a flexible, pay-as-you-go pricing model.
E. EC2 has automatic storage cost optimization.
Explanation:
AWS Control Tower uses AWS CloudFormation to create resources in your landing zone. AWS
CloudFormation is a service that helps you model and set up your AWS resources using templates.
AWS Control Tower supports creating AWS::ControlTower::EnabledControl resources in AWS
CloudFormation. Therefore, the correct answer is A. You can learn more about AWS Control Tower
and AWS CloudFormation
Page 4
Question: 6
Question: 7
Answer: B
Answer: A
Answer: B, D

Which option is an advantage of AWS Cloud computing that minimizes variable costs?
A. High availability
B. Economies of scale
C. Global reach
D. Agility
Explanation:
One of the advantages of AWS Cloud computing is that it minimizes variable costs by leveraging
economies of scale. This means that AWS can achieve lower costs per unit of computing resources by
spreading the fixed costs of building and maintaining data centers over a large number of customers.
As a result, AWS can offer lower and more predictable prices to its customers, who only pay for the
resources they consume. Therefore, the correct answer is B. You can learn more about AWS pricing
and economies of scale
Some of the advantages of using Amazon EC2 instances to host applications in the AWS Cloud instead
of on premises are:
EC2 integrates with Amazon VPC, AWS CloudTrail, and AWS Identity and Access Management (IAM).
Amazon VPC lets you provision a logically isolated section of the AWS Cloud where you can launch
AWS resources in a virtual network that you define. AWS CloudTrail enables governance, compliance,
operational auditing, and risk auditing of your AWS account. AWS IAM enables you to manage access
to AWS services and resources securely. Therefore, the correct answer is B. You can learn more about
Amazon EC2 and its integration with other AWS services
EC2 has a flexible, pay-as-you-go pricing model. You only pay for the compute capacity you use, and
you can scale up and down as needed. You can also choose from different pricing options, such as
On-Demand, Savings Plans, Reserved Instances, and Spot Instances, to optimize your costs.
Therefore, the correct answer is D. You can learn more about Amazon EC2 pricing
The other options are incorrect because:
EC2 does not include operating system patch management. You are responsible for managing and
maintaining your own operating systems on EC2 instances. You can use AWS Systems Manager to
automate common maintenance tasks, such as applying patches, or use Amazon EC2 Image Builder
to create and maintain secure images. Therefore, the incorrect answer is A.
EC2 does not have a 100% service level agreement (SLA). The EC2 SLA guarantees 99.99% availability
for each EC2 Region, not for each individual instance. Therefore, the incorrect answer is C.
EC2 does not have automatic storage cost optimization. You are responsible for choosing the right
storage option for your EC2 instances, such as Amazon Elastic Block Store (EBS) or Amazon Elastic File
System (EFS), and monitoring and optimizing your storage costs. You can use AWS Cost Explorer or
AWS Trusted Advisor to analyze and reduce your storage spending. Therefore, the incorrect answer is
E.
Question: 8
Question: 9
Answer: B

Which benefit is included with an AWS Enterprise Support plan?
A. AWS Partner Network (APN) support at no cost
B. Designated support from an AWS technical account manager (TAM)
C. On-site support from AWS engineers
D. AWS managed compliance as code with AWS Config
A company plans to migrate to AWS and wants to create cost estimates for its AWS use cases.
Which AWS service or tool can the company use to meet these requirements?
A. AWS Pricing Calculator
B. Amazon CloudWatch
C. AWS Cost Explorer
Which pillar of the AWS Well-Architected Framework focuses on the ability to run workloads
effectively, gain insight into operations, and continuously improve supporting processes and
procedures?
A. Cost optimization
B. Reliability
C. Operational excellence
D. Performance efficiency
Explanation:
The AWS Well-Architected Framework is a set of best practices and guidelines for designing and
operating systems in the cloud. The framework consists of five pillars: operational excellence,
security, reliability, performance efficiency, and cost optimization. The operational excellence pillar
focuses on the ability to run workloads effectively, gain insight into operations, and continuously
improve supporting processes and procedures. Therefore, the correct answer is C. You can learn
more about the AWS Well-Architected Framework and its pillars.
Explanation:
AWS offers different support plans to meet the needs of different customers. The AWS Enterprise
Support plan is the highest level of support that provides customers with concierge-like service,
where the main focus is helping them achieve their outcomes and find success in the cloud. One of
the benefits of the AWS Enterprise Support plan is that customers get designated support from an
AWS technical account manager (TAM), who provides consultative architectural and operational
guidance based on their applications and use cases. Therefore, the correct answer is B. You can learn
more about AWS support plans and their benefits .
Page 6
Question: 10
Question: 11
Answer: C
Answer: B

D. AWS Budgets
A company deploys its application on Amazon EC2 instances. The application occasionally
experiences sudden increases in demand. The company wants to ensure that its application can
respond to changes in demand at the lowest possible cost.
Which AWS service or tool will meet these requirements?
A. AWS Auto Scaling
B. AWS Compute Optimizer
C. AWS Cost Explorer
D. AWS Well-Architected Framework
A developer needs to build an application for a retail company. The application must provide real-
time product recommendations that are based on machine learning.
Which AWS service should the developer use to meet this requirement?
A. AWS Health Dashboard
B. Amazon Personalize
C. Amazon Forecast
D. Amazon Transcribe
Explanation:
AWS Auto Scaling is the AWS service or tool that will meet the requirements of ensuring that the
application can respond to changes in demand at the lowest possible cost. AWS Auto Scaling allows
Explanation:
AWS Pricing Calculator is a web-based planning tool that customers can use to create estimates for
their AWS use cases. They can use it to model their solutions before building them, explore the AWS
service price points, and review the calculations behind their estimates. Therefore, the correct
answer is A. You can learn more about AWS Pricing Calculator and how it works.
Explanation:
Amazon Personalize is a fully managed machine learning service that customers can use to generate
personalized recommendations for their users. It can also generate user segments based on the
users’ affinity for certain items or item metadata. Amazon Personalize uses the customers’ data to
train and deploy custom recommendation models that can be integrated into their applications.
Therefore, the correct answer is B. You can learn more about Amazon Personalize and its use case.
Page 7
Question: 12
Question: 13
Answer: B
Answer: A
Answer: A

A company deploys its application to multiple AWS Regions and configures automatic failover
between those Regions.
Which AWS service or tool provides recommendations to help users get rightsized Amazon EC2
instances based on historical workload usage data?
A. AWS Pricing Calculator
B. AWS Compute Optimizer
C. AWS App Runner
D. AWS Systems Manager
Explanation:
AWS Compute Optimizer is the AWS service or tool that provides recommendations to help users get
rightsized Amazon EC2 instances based on historical workload usage data. AWS Compute Optimizer
analyzes the configuration and performance characteristics of the EC2 instances and delivers
recommendations for optimal instance types, sizes, and configurations. AWS Compute Optimizer
helps users improve performance, reduce costs, and eliminate underutilized resources
A company wants to use a managed service to simplify the setup, operation, and scaling of its MySQL
database in the AWS Cloud.
Which AWS service will meet these requirements?
A. Amazon EMR
B. Amazon RDS
C. Amazon Redshift
D. Amazon DynamoDB
Explanation:
Amazon RDS is the AWS service that will meet the requirements of using a managed service to
simplify the setup, operation, and scaling of a MySQL database in the AWS Cloud. Amazon RDS is a
relational database service that supports MySQL and other popular database engines. Amazon RDS
handles routine database tasks such as provisioning, patching, backup, recovery, and scaling. Amazon
RDS also offers high availability, security, and compatibility features3
users to automatically adjust the number of Amazon EC2 instances based on the application’s
performance and availability needs. AWS Auto Scaling can also optimize costs by helping users select
the most cost-effective EC2 instances for their application1
Question: 14
Question: 15
Question: 16
Answer: B
Answer: B

Which cloud concept does this architecture represent?
A. Security
B. Reliability
C. Scalability
D. Cost optimization
A company's IT team is managing MySQL database server clusters. The IT team has to patch the
database and take backup snapshots of the data in the clusters. The company wants to move this
workload to AWS so that these tasks will be completed automatically.
What should the company do to meet these requirements?
A. Deploy MySQL database server clusters on Amazon EC2 instances.
B. Use Amazon RDS with a MySQL database.
C. Use an AWS Cloud Form at ion template to deploy MySQL database servers on Amazon EC2
instances.
D. Migrate all the MySQL database data to Amazon S3.
Explanation:
The company should use Amazon RDS with a MySQL database to meet the requirements of moving
its workload to AWS so that the tasks of patching the database and taking backup snapshots of the
data in the clusters will be completed automatically. Amazon RDS is a managed service that
simplifies the setup, operation, and scaling of relational databases in the AWS Cloud. Amazon RDS
automates common database administration tasks such as patching, backup, and recovery. Amazon
RDS also supports MySQL and other popular database engines5
Explanation:
Reliability is the cloud concept that this architecture represents. Reliability is the ability of a system
to recover from infrastructure or service disruptions, dynamically acquire computing resources to
meet demand, and mitigate disruptions such as misconfigurations or transient network
issues. Deploying an application to multiple AWS Regions and configuring automatic failover
between those Regions enhances the reliability of the application by reducing the impact of regional
failures and increasing the availability of the application4
A company recently migrated to the AWS Cloud. The company needs to determine whether its newly
imported Amazon EC2 instances are the appropriate size and type.
Which AWS services can provide this information to the company? {Select TWO.)
A. AWS Auto Scaling
Page 9
Question: 17
Question: 18
Answer: B
Answer: B

B. AWS Control Tower
C. AWS Trusted Advisor
D. AWS Compute Optimizer
E. Amazon Forecast
A company's user base needs to remotely access virtual desktop computers from the internet Which
AWS service provides this functionality?
A. Amazon Connect
Explanation:
AWS Trusted Advisor and AWS Compute Optimizer are the AWS services that can provide
information to the company about whether its newly imported Amazon EC2 instances are the
appropriate size and type. AWS Trusted Advisor is an online tool that provides best practices
recommendations in five categories: cost optimization, performance, security, fault tolerance, and
service limits. AWS Trusted Advisor can help users identify underutilized or idle EC2 instances, and
suggest ways to reduce costs and improve performance. AWS Compute Optimizer is a service that
analyzes the configuration and utilization metrics of EC2 instances and delivers recommendations for
optimal instance types, sizes, and configurations. AWS Compute Optimizer helps users improve
performance, reduce costs, and eliminate underutilized resources
Explanation:
Amazon Rekognition is the AWS service that the company should use to build the capability of
identifying and removing inappropriate photos. Amazon Rekognition is a service that uses deep
learning technology to analyze images and videos for various purposes, such as face detection,
object recognition, text extraction, and content moderation. Amazon Rekognition can help users
detect unsafe or inappropriate content in images and videos, such as nudity, violence, or drugs, and
provide confidence scores for each label. Amazon Rekognition does not require any machine learning
expertise, and users can easily integrate it with other AWS services
A company has a social media platform in which users upload and share photos with other
users. The company wants to identify and remove inappropriate photos. The company has
no machine learning (ML) scientists and must build this detection capability with no ML
expertise. Which AWS service should the company use to build this capability?
A. Amazon SageMaker
B. Amazon Textract
C. Amazon Rekognition
D. Amazon Comprehend
Page 10
Question: 19
Question: 20
Answer: C
Answer: C, D

B. Amazon Cognito
C. Amazon Workspaces
D. Amazon Upstream 2.0
Explanation:
Amazon Workspaces is the AWS service that provides the functionality of remotely accessing virtual
desktop computers from the internet. Amazon Workspaces is a fully managed, secure desktop-as-a-
service (DaaS) solution that allows users to provision cloud-based virtual desktops and access them
from anywhere, using any supported device. Amazon Workspaces helps users reduce the complexity
and cost of managing and maintaining physical desktops, and provides a consistent and secure user
experience
Page 11
Answer: C

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