CLF-C02 sample exam questions

15 exam-style questions for AWS CLF-C02: Cloud Practitioner, with answers and explanations. Take them as a timed practice exam first if you want a score out of 1000.

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  1. Question 1Multiple responseSecurity and Compliance
    Which AWS services or features provide disaster recovery solutions for Amazon EC2 instances? (Choose two.)
    1. A
      EC2 Reserved Instances
    2. B
      EC2 Amazon Machine Images (AMIs)
    3. C
      Amazon Elastic Block Store (Amazon EBS) snapshots
    4. D
      AWS Shield
    5. E
      Amazon GuardDuty
    Show answer

    Correct answer: B, C

    Why

    AMIs and EBS snapshots allow instances and their data to be restored, including in another Region. Reserved Instances are a pricing option, Shield protects against DDoS, and GuardDuty detects threats.

  2. Question 2Single choiceBilling, Pricing, and Support
    A company has an uninterruptible application that runs on Amazon EC2 instances. The application constantly processes a backlog of files in an Amazon Simple Queue Service (Amazon SQS) queue. This usage is expected to continue to grow for years.
    What is the MOST cost-effective EC2 instance purchasing model to meet these requirements?
    1. A
      Spot Instances
    2. B
      On-Demand Instances
    3. C
      Savings Plans
    4. D
      Dedicated Hosts
    Show answer

    Correct answer: C

    Why

    Long-term, uninterruptible use suits Savings Plans, which lower cost in exchange for commitment. Spot can be interrupted, On-Demand costs more for steady use, and Dedicated Hosts are for isolation and licensing.

  3. Question 3Single choiceCloud Concepts
    A company is planning to migrate its application to the AWS Cloud.

    Which AWS tool or set of resources should the company use to analyze and assess its readiness for migration?
    1. A
      AWS Cloud Adoption Framework (AWS CAF)
    2. B
      AWS Pricing Calculator
    3. C
      AWS Well-Architected Framework
    4. D
      AWS Budgets
    Show answer

    Correct answer: A

    Why

    The AWS Cloud Adoption Framework helps organizations assess readiness and plan cloud adoption. Pricing Calculator estimates costs, the Well-Architected Framework reviews workload designs, and Budgets tracks spending.

  4. Question 4Single choiceOther
    Which AWS service or feature is a browser-based, pre-authenticated service that can be launched directly from the AWS Management Console?
    1. A
      AWS API
    2. B
      AWS Lightsail
    3. C
      AWS Cloud9
    4. D
      AWS CloudShell
    Show answer

    Correct answer: D

    Why

    AWS CloudShell is a browser-based, pre-authenticated shell launched from the console. The API is a programming interface, Lightsail provides simple servers, and Cloud9 is a development environment.

  5. Question 5Multiple responseCloud Technology and Services
    A company wants to migrate its database to a managed AWS service that is compatible with PostgreSQL.

    Which AWS services will meet these requirements? (Choose two.)
    1. A
      Amazon Athena
    2. B
      Amazon RDS
    3. C
      Amazon EC2
    4. D
      Amazon DynamoDB
    5. E
      Amazon Aurora
    Show answer

    Correct answer: B, E

    Why

    Amazon RDS and Amazon Aurora offer managed PostgreSQL-compatible databases. Athena queries S3 data, EC2 would be self-managed, and DynamoDB is NoSQL.

  6. Question 6Single choiceCloud Concepts
    A company wants to run its workloads in the AWS Cloud effectively, reduce management overhead, and improve processes.

    Which AWS Well-Architected Framework pillar represents these requirements?
    1. A
      Reliability
    2. B
      Operational excellence
    3. C
      Performance efficiency
    4. D
      Cost optimization
    Show answer

    Correct answer: B

    Why

    The Operational Excellence pillar covers running workloads effectively and continuously improving processes. Reliability, performance efficiency and cost optimization have different goals.

  7. Question 7Single choiceOther
    A company wants to quickly implement a continuous integration/continuous delivery (CI/CD) pipeline.

    Which AWS service will meet this requirement?
    1. A
      AWS Config
    2. B
      Amazon Cognito
    3. C
      AWS DataSync
    4. D
      AWS CodeStar
    Show answer

    Correct answer: D

    Why

    AWS CodeStar was built to set up CI/CD pipelines quickly, although AWS has since discontinued it. Config tracks configuration, Cognito handles user sign-in, and DataSync moves data.

  8. Question 8Single choiceSecurity and Compliance
    A company wants to use machine learning capabilities to analyze log data from its Amazon EC2 instances and efficiently conduct security investigations.

    Which AWS service will meet these requirements?
    1. A
      Amazon Inspector
    2. B
      Amazon QuickSight
    3. C
      Amazon Detective
    Show answer

    Correct answer: C

    Why

    Amazon Detective uses machine learning on log data to support security investigations. Inspector scans for vulnerabilities, and QuickSight is for dashboards.

  9. Question 9Single choiceBilling, Pricing, and Support
    Where can users find examples of AWS Cloud solution designs?
    1. A
      AWS Marketplace
    2. B
      AWS Service Catalog
    3. C
      AWS Architecture Center
    4. D
      AWS Trusted Advisor
    Show answer

    Correct answer: C

    Why

    The AWS Architecture Center offers reference architectures and example designs. Marketplace sells software, Service Catalog manages approved products, and Trusted Advisor gives recommendations.

  10. Question 10Single choiceCloud Technology and Services
    An ecommerce company has deployed a new web application on Amazon EC2 instances. The company wants to distribute incoming HTTP traffic evenly across all running instances.

    Which AWS service or resource will meet this requirement?
    1. A
      Amazon EC2 Auto Scaling
    2. B
      Application Load Balancer
    3. C
      Gateway Load Balancer
    4. D
      Network Load Balancer
    Show answer

    Correct answer: B

    Why

    An Application Load Balancer distributes HTTP traffic across instances. Auto Scaling changes capacity, Gateway Load Balancer is for appliances, and Network Load Balancer works at layer 4.

  11. Question 11Single choiceCloud Technology and Services
    A company wants to gain insights from its data and build interactive data visualization dashboards.

    Which AWS service will meet these requirements?
    1. A
      Amazon SageMaker
    2. B
      Amazon Rekognition
    3. C
      Amazon QuickSight
    4. D
      Amazon Kinesis
    Show answer

    Correct answer: C

    Why

    Amazon QuickSight builds interactive dashboards and provides insights from data. SageMaker builds ML models, Rekognition analyzes images, and Kinesis handles streaming data.

  12. Question 12Multiple responseBilling, Pricing, and Support
    Which of the following are economic benefits of using the AWS Cloud? (Choose two.)
    1. A
      Consumption-based pricing
    2. B
      Perpetual licenses
    3. C
      Economies of scale
    4. D
      AWS Enterprise Support at no additional cost
    5. E
      Bring-your-own-hardware model
    Show answer

    Correct answer: A, C

    Why

    Consumption-based pricing and economies of scale are economic benefits of AWS. Perpetual licenses and bringing your own hardware are not cloud benefits, and Enterprise Support is a paid plan.

  13. Question 13Single choiceSecurity and Compliance
    Which AWS service is used to temporarily provide federated security credentials to access AWS resources?
    1. A
      Amazon GuardDuty
    2. B
      AWS Simple Token Service (AWS STS)
    3. C
      AWS Secrets Manager
    4. D
      AWS Certificate Manager
    Show answer

    Correct answer: B

    Why

    AWS STS provides temporary federated credentials, although its proper name is Security Token Service. GuardDuty detects threats, Secrets Manager stores secrets, and Certificate Manager handles certificates.

  14. Question 14Single choiceOther
    Which AWS service uses speech-to-text conversion to help users create meeting notes?
    1. A
      Amazon Polly
    2. B
      Amazon Textract
    3. C
      Amazon Rekognition
    4. D
      Amazon Transcribe
    Show answer

    Correct answer: D

    Why

    Amazon Transcribe converts speech to text, which can be used for meeting notes. Polly does the reverse, Textract reads documents, and Rekognition analyzes images and video.

  15. Question 15Single choiceCloud Concepts
    Which AWS service supports MySQL database engines?
    1. A
      Amazon Dynamo DВ
    2. B
      Amazon RDS
    3. C
      Amazon DocumentDB (with MongoDB compatibility)
    4. D
      Amazon ElastiCache
    Show answer

    Correct answer: B

    Why

    Amazon RDS supports the MySQL engine. DynamoDB is NoSQL, DocumentDB stores documents, and ElastiCache is an in-memory cache.