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AWS Certified Cloud Practitioner

CLF-C02

The AWS Certified Cloud Practitioner certification validates foundational knowledge of AWS Cloud services and cloud computing. It is ideal for individuals with no prior IT or cloud experience, providing a strong entry point into a cloud career.

499 practice questions · Updated 2023-10-05

4Domains
19Objectives
193Concepts
499Questions

CLF-C02 Curriculum

Every domain, objective, and concept the CLF-C02 exam measures.

  1. Cost SavingsExplain how the AWS Cloud reduces capital expenditure and shifts to variable operational costs.
  2. Elasticity and ScalabilityDescribe how AWS allows scaling resources up or down automatically based on demand.
  3. Global ReachIdentify how AWS's global infrastructure enables low-latency access and geographic expansion.
  4. Security and ComplianceSummarize how AWS provides robust security features and compliance certifications.
  5. Reliability and High AvailabilityExplain how AWS offers fault-tolerant architectures and service-level agreements.
  6. Agility and SpeedDescribe how AWS enables rapid provisioning and innovation through on-demand resources.
  7. Operational EfficiencyDiscuss how AWS reduces the burden of infrastructure management, allowing focus on core business.
  1. Design for failureExplain how architecting for failure, such as using multiple Availability Zones, improves resilience.
  2. Decoupling componentsDescribe how decoupling application components (e.g., using queues) increases scalability and fault tolerance.
  3. Elasticity and scalabilityDifferentiate between vertical and horizontal scaling and explain how elasticity enables cost optimization.
  4. AutomationIdentify how automating infrastructure (e.g., Infrastructure as Code) reduces human error and speeds up deployment.
  5. Serverless architecturesExplain the benefits of serverless computing, such as reduced operational overhead and automatic scaling.
  6. Security as a priorityDescribe how security is integrated into design, including least privilege and shared responsibility.
  7. Cost optimizationExplain design principles that minimize costs, such as right-sizing and using managed services.
  8. Loose coupling and fault isolationDescribe how building loosely coupled systems limits blast radius and improves availability.
  1. Benefits of cloud migrationIdentify and explain the key benefits of migrating to the AWS Cloud, such as cost savings, scalability, agility, and innovation.
  2. Migration strategies (6 Rs)Describe the six common migration strategies (rehost, replatform, refactor, relocate, retain, retire) and when each is appropriate.
  3. AWS Migration Tools and ServicesRecognize the purpose of AWS migration tools and services, including AWS Migration Hub, AWS Application Migration Service, and AWS Database Migration Service.
  4. Migration planning and assessmentExplain the steps involved in planning a migration, including assessing readiness, creating a migration plan, and using frameworks like AWS Cloud Adoption Framework.
  5. Cost and operational benefitsArticulate how migration to AWS can reduce total cost of ownership and improve operational efficiency through automation and managed services.
  6. Security and compliance benefitsDescribe how AWS helps improve security and compliance during migration, including shared responsibility and compliance programs.
  1. Total Cost of Ownership (TCO)Explain the concept of Total Cost of Ownership and how it compares to traditional on-premises IT costs.
  2. Capital Expenditure (CapEx) vs. Operational Expenditure (OpEx)Differentiate between capital expenditure and operational expenditure and describe how cloud computing shifts costs from CapEx to OpEx.
  3. Variable vs. Fixed CostsDescribe the difference between variable and fixed costs and how cloud pricing models use variable costs.
  4. Economies of ScaleExplain how AWS achieves economies of scale and how these savings are passed to customers.
  5. Pay-as-you-go PricingDescribe the pay-as-you-go pricing model and its benefits for aligning costs with usage.
  6. Cost Optimization StrategiesIdentify common cost optimization strategies such as rightsizing, reserved capacity, and spot instances.
  7. Cost Management ToolsRecognize AWS tools like AWS Cost Explorer, AWS Budgets, and AWS Pricing Calculator for estimating and managing cloud costs.
  8. Cost Allocation and TaggingExplain how tagging resources helps in cost allocation and tracking across departments or projects.
  9. Free Tier and Pricing ModelsDescribe the AWS Free Tier and various pricing models (on-demand, reserved, savings plans, spot) and their use cases.
  10. Total Cost of Ownership (TCO) ComparisonCompare the total cost of running workloads on AWS versus on-premises, considering factors like hardware, maintenance, and operational overhead.

  1. Shared Responsibility Model OverviewDefine the AWS shared responsibility model and explain that AWS secures the cloud while customers secure what is in the cloud.
  2. AWS ResponsibilitiesIdentify the security aspects AWS is responsible for, including physical infrastructure, hardware, software, and global network.
  3. Customer ResponsibilitiesIdentify the security aspects customers are responsible for, including data, identity and access management, and configuration of services.
  4. Responsibility by Service TypeExplain how responsibility varies across service categories such as infrastructure, container, and abstracted services.
  5. Responsibility for Data and ComplianceDescribe how the model applies to data classification, compliance, and governance.
  1. AWS Shared Responsibility ModelExplain how security and compliance responsibilities are divided between AWS and the customer for different service types.
  2. AWS Compliance Programs and CertificationsIdentify major AWS compliance programs, such as SOC, PCI DSS, HIPAA, and FedRAMP, and how they help customers meet regulatory requirements.
  3. AWS ArtifactUse AWS Artifact to access compliance reports and agreements for auditing and compliance purposes.
  4. AWS ConfigDescribe how AWS Config assesses, audits, and evaluates resource configurations against desired policies.
  5. AWS CloudTrailExplain how AWS CloudTrail records API activity for governance, compliance, and audit.
  6. AWS Audit ManagerDescribe how AWS Audit Manager automates evidence collection for audits and compliance.
  7. AWS Security HubExplain how AWS Security Hub aggregates and prioritizes security findings across AWS accounts.
  8. AWS GuardDutyDescribe how GuardDuty provides intelligent threat detection for AWS workloads.
  9. AWS Identity and Access Management (IAM)Explain IAM's role in managing access to AWS resources through users, groups, roles, and policies.
  10. AWS Organizations and Service Control Policies (SCPs)Describe how AWS Organizations and SCPs help centrally govern and enforce security policies across multiple accounts.
  11. AWS Key Management Service (KMS)Explain how KMS enables encryption key management for data protection.
  12. AWS CloudHSMDescribe how CloudHSM provides dedicated hardware security modules for cryptographic operations.
  13. AWS WAFExplain how AWS WAF protects web applications from common web exploits.
  14. AWS ShieldDescribe how AWS Shield provides DDoS protection for AWS resources.
  15. AWS InspectorExplain how Amazon Inspector automates vulnerability assessments for applications and workloads.
  16. AWS MacieDescribe how Amazon Macie uses machine learning to discover and protect sensitive data.
  17. AWS Certificate ManagerExplain how AWS Certificate Manager provisions, manages, and deploys SSL/TLS certificates.
  18. AWS Secrets ManagerDescribe how AWS Secrets Manager helps rotate and manage secrets such as database credentials.
  19. AWS Systems ManagerExplain how Systems Manager provides operational visibility and control, including patch management and compliance scanning.
  20. AWS Trusted AdvisorDescribe how Trusted Advisor provides recommendations for security, cost optimization, and compliance.
  21. AWS Well-Architected Framework Security PillarApply the security pillar's best practices for identity, protection, data, and incident response.
  22. AWS Cloud Compliance and Governance Best PracticesSummarize best practices for establishing governance, monitoring, and compliance in the AWS Cloud.
  1. IAM Users and GroupsDefine IAM users and groups and explain how they are used to manage access for individuals and collections of users.
  2. IAM RolesExplain IAM roles, their purpose for granting temporary permissions, and common use cases like EC2 instances and cross-account access.
  3. IAM PoliciesDescribe IAM policies, including managed and inline policies, and how they define permissions for users, groups, and roles.
  4. Multi-Factor Authentication (MFA)Explain the purpose of MFA and how it adds an extra layer of security to AWS account access.
  5. IAM Identity Center (SSO)Describe AWS IAM Identity Center and its role in providing single sign-on and centralized access management across AWS accounts and applications.
  6. Access Keys and Credential ManagementExplain the use of access keys for programmatic access, best practices for managing them, and the importance of rotating credentials.
  7. AWS Organizations and SCPsDescribe AWS Organizations and service control policies (SCPs) for centrally managing permissions across multiple AWS accounts.
  8. Shared Responsibility Model for AccessIdentify the customer's responsibilities in access management, such as managing users, groups, roles, and policies, versus AWS's responsibilities for infrastructure security.
  1. AWS Shared Responsibility ModelExplain how security responsibilities are divided between AWS and the customer for different service types.
  2. AWS Identity and Access Management (IAM)Describe IAM users, groups, roles, and policies, and how they control access to AWS resources.
  3. AWS Organizations and Service Control Policies (SCPs)Explain how AWS Organizations and SCPs help centrally manage and enforce security policies across multiple accounts.
  4. AWS Key Management Service (KMS)Describe how KMS manages encryption keys and integrates with other AWS services to protect data.
  5. AWS CloudTrailExplain how CloudTrail records API activity for auditing, security analysis, and compliance.
  6. AWS ConfigDescribe how AWS Config assesses, audits, and evaluates resource configurations against desired policies.
  7. AWS Shield and AWS WAFIdentify how AWS Shield protects against DDoS attacks and how AWS WAF filters malicious web traffic.
  8. AWS Inspector and GuardDutyExplain how Amazon Inspector scans for vulnerabilities and how GuardDuty provides continuous threat detection.
  9. AWS ArtifactDescribe how AWS Artifact provides access to compliance reports and security documentation.
  10. AWS Security HubExplain how Security Hub aggregates and prioritizes security alerts from multiple AWS services.
  11. AWS Secrets ManagerDescribe how Secrets Manager securely stores, rotates, and manages access to secrets like database credentials.
  12. AWS Certificate Manager (ACM)Explain how ACM provisions, manages, and deploys SSL/TLS certificates for secure communication.
  13. AWS Network Security ServicesIdentify security groups, network ACLs, and AWS Network Firewall as components for controlling network traffic.
  14. AWS Compliance Programs and ReportsRecognize how AWS compliance programs, such as SOC, PCI DSS, and HIPAA, help customers meet regulatory requirements.

  1. AWS Cloud deployment modelsDefine the three main cloud deployment models (cloud, on-premises, and hybrid) and describe how they differ in terms of ownership, access, and management.
  2. AWS Cloud operating modelsExplain the different operating models for AWS, including the shared responsibility model and how it defines customer and AWS responsibilities.
  3. AWS Management ConsoleDescribe how to use the AWS Management Console to deploy and manage AWS resources through a web-based interface.
  4. AWS Command Line Interface (CLI)Explain how to use the AWS CLI to interact with AWS services programmatically for deployment and operations.
  5. AWS Software Development Kits (SDKs)Describe how AWS SDKs enable developers to integrate AWS services into applications using various programming languages.
  6. AWS Elastic BeanstalkDefine AWS Elastic Beanstalk as a platform-as-a-service that automates the deployment and scaling of applications.
  7. AWS CloudFormationExplain how AWS CloudFormation enables infrastructure as code to provision and manage AWS resources in a declarative way.
  8. AWS OpsWorksDescribe AWS OpsWorks as a configuration management service that uses Chef and Puppet to automate server configuration.
  9. AWS CodeDeployExplain how AWS CodeDeploy automates code deployments to any instance, including Amazon EC2 and on-premises.
  10. AWS CodePipelineDescribe AWS CodePipeline as a continuous integration and continuous delivery service for fast and reliable application updates.
  11. AWS CodeCommitDefine AWS CodeCommit as a fully managed source control service that hosts secure Git-based repositories.
  12. AWS CodeBuildExplain how AWS CodeBuild compiles source code, runs tests, and produces deployable artifacts in a fully managed build service.
  13. AWS Systems ManagerDescribe how AWS Systems Manager provides a unified interface to view operational data and automate operational tasks across AWS resources.
  14. AWS ConfigExplain how AWS Config assesses, audits, and evaluates the configurations of AWS resources to ensure compliance.
  15. AWS CloudTrailDescribe how AWS CloudTrail records API activity in your account for auditing, security monitoring, and operational troubleshooting.
  16. AWS Trusted AdvisorExplain how AWS Trusted Advisor provides recommendations to help optimize AWS environments for cost, performance, security, and fault tolerance.
  17. AWS Auto ScalingDefine AWS Auto Scaling as a service that automatically adjusts capacity to maintain steady, predictable performance at the lowest possible cost.
  18. AWS Elastic Load BalancingDescribe how Elastic Load Balancing automatically distributes incoming application traffic across multiple targets to increase fault tolerance.
  19. AWS CloudWatchExplain how Amazon CloudWatch monitors AWS resources and applications in real time, providing metrics, logs, and alarms.
  20. AWS Well-Architected FrameworkDescribe the AWS Well-Architected Framework as a set of best practices for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud.
  1. AWS RegionsDefine AWS Regions as geographic locations with multiple, isolated Availability Zones and explain their purpose in providing low latency and high availability.
  2. Availability ZonesDescribe Availability Zones as distinct data centers within a Region that are engineered to be isolated from failures and connected through low-latency links.
  3. Edge Locations and Points of PresenceExplain Edge Locations and Points of Presence as part of the AWS global network used for content delivery and reducing latency for end users.
  4. AWS Global Infrastructure BenefitsIdentify the benefits of the AWS global infrastructure, including scalability, resilience, and the ability to deploy applications closer to users.
  5. Selecting AWS RegionsDetermine factors for selecting an AWS Region, such as compliance, latency, pricing, and service availability.
  6. AWS Local Zones and WavelengthDescribe AWS Local Zones and Wavelength as extensions of Regions that bring compute and storage closer to end users for low-latency applications.
  1. Identify AWS compute servicesRecognize the primary AWS compute services, including Amazon EC2, AWS Lambda, Amazon ECS, Amazon EKS, AWS Fargate, Amazon ECR, and AWS Elastic Beanstalk, and understand their general use cases.
  2. Differentiate compute service categoriesDistinguish between virtual machines, containers, serverless, and managed services, and map AWS compute services to these categories.
  3. Match compute services to use casesSelect the appropriate AWS compute service for common scenarios such as web hosting, batch processing, event-driven workloads, and containerized applications.
  4. Understand compute service pricing modelsExplain the basic pricing models for AWS compute services, including on-demand, reserved, spot instances, and pay-per-invocation for serverless.
  5. Recognize compute service integrationIdentify how AWS compute services integrate with other AWS services like storage, databases, and networking to build solutions.
  1. AWS database service categoriesIdentify the main categories of AWS database services (relational, key-value, document, in-memory, graph, time-series, ledger) and their general use cases.
  2. Amazon RDSDescribe Amazon Relational Database Service (RDS) as a managed relational database service supporting multiple engines (e.g., MySQL, PostgreSQL, Oracle, SQL Server, MariaDB).
  3. Amazon AuroraExplain Amazon Aurora as a MySQL- and PostgreSQL-compatible relational database built for the cloud with high performance and availability.
  4. Amazon DynamoDBDescribe Amazon DynamoDB as a fully managed NoSQL key-value and document database for high-performance, scalable applications.
  5. Amazon RedshiftIdentify Amazon Redshift as a petabyte-scale data warehouse service for analytical queries on large datasets.
  6. Amazon ElastiCacheExplain Amazon ElastiCache as a managed in-memory caching service supporting Redis and Memcached for low-latency performance.
  7. Amazon NeptuneDescribe Amazon Neptune as a fully managed graph database service for highly connected data.
  8. Amazon TimestreamIdentify Amazon Timestream as a fully managed time-series database for IoT and operational applications.
  9. Amazon Quantum Ledger Database (QLDB)Explain Amazon QLDB as a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log.
  10. Amazon DocumentDBDescribe Amazon DocumentDB as a fully managed document database service compatible with MongoDB workloads.
  11. Amazon KeyspacesIdentify Amazon Keyspaces as a scalable, fully managed Apache Cassandra-compatible database service.
  12. Amazon Managed BlockchainExplain Amazon Managed Blockchain as a fully managed service for creating and managing blockchain networks using open-source frameworks.
  13. Database migration and management servicesRecognize AWS services like AWS Database Migration Service (DMS) and AWS Schema Conversion Tool for migrating and managing databases.
  14. Selecting the right database serviceEvaluate different AWS database services based on workload requirements such as data model, access patterns, scalability, and latency.
  1. AWS network services overviewIdentify the main AWS network services and their general purposes.
  2. Amazon VPCDescribe Amazon Virtual Private Cloud (VPC) and its role in creating isolated networks.
  3. Subnets and routingExplain subnets, route tables, and how they control traffic within a VPC.
  4. Internet and NAT gatewaysDescribe internet gateways and NAT gateways for enabling internet access.
  5. Security groups and network ACLsDifferentiate security groups and network ACLs for controlling traffic.
  6. Amazon Route 53Describe Amazon Route 53 as a DNS and domain management service.
  7. AWS Direct ConnectExplain AWS Direct Connect for dedicated network connections.
  8. AWS VPNDescribe AWS Site-to-Site VPN and Client VPN for secure connections.
  9. Elastic Load BalancingIdentify Elastic Load Balancing and its role in distributing traffic.
  10. Amazon CloudFrontDescribe Amazon CloudFront as a content delivery network (CDN) service.
  11. AWS Transit GatewayExplain AWS Transit Gateway for connecting VPCs and on-premises networks.
  12. AWS PrivateLinkDescribe AWS PrivateLink for private connectivity to services.
  1. AWS storage service categoriesIdentify the main categories of AWS storage services (object, block, file, backup, and data transfer) and their general use cases.
  2. Amazon S3Describe Amazon S3 as an object storage service for storing and retrieving any amount of data, including its durability, scalability, and common use cases like backups and static website hosting.
  3. Amazon S3 GlacierExplain Amazon S3 Glacier as a low-cost archival storage service for long-term data retention, including its retrieval options and use cases.
  4. Amazon EBSDescribe Amazon Elastic Block Store (EBS) as block-level storage for use with Amazon EC2 instances, including its persistence, snapshots, and typical use cases.
  5. Amazon EFSExplain Amazon Elastic File System (EFS) as a scalable, elastic file storage service for use with AWS Cloud services and on-premises resources, including its file system semantics and use cases.
  6. Amazon FSxIdentify Amazon FSx as a fully managed file storage service offering various file systems (e.g., Lustre, Windows File Server) for specialized workloads.
  7. AWS BackupDescribe AWS Backup as a centralized backup service to automate and manage backups across AWS services, including its policy-based backup plans.
  8. AWS Storage GatewayExplain AWS Storage Gateway as a hybrid cloud storage service that connects on-premises environments with AWS storage, including its modes (file, volume, tape).
  9. Amazon S3 Transfer AccelerationDescribe Amazon S3 Transfer Acceleration as a feature to speed up uploads to S3 over long distances using AWS edge locations.
  10. AWS Snow FamilyIdentify AWS Snow Family (Snowcone, Snowball, Snowmobile) as physical devices for data transfer and edge computing, used for large data migrations or disconnected environments.
  11. AWS DataSyncExplain AWS DataSync as a service for automating and accelerating data transfer between on-premises storage and AWS storage services, including its scheduling and validation features.
  1. AWS AI/ML service overviewIdentify the purpose and use cases of core AWS AI/ML services such as Amazon SageMaker, Amazon Comprehend, Amazon Rekognition, Amazon Polly, Amazon Transcribe, Amazon Translate, Amazon Lex, and Amazon Textract.
  2. AWS analytics service overviewIdentify the purpose and use cases of core AWS analytics services such as Amazon Athena, Amazon EMR, Amazon Redshift, Amazon Kinesis, Amazon QuickSight, and AWS Glue.
  3. Differentiating AI/ML and analytics servicesDistinguish between AWS AI/ML services and analytics services based on their primary functions and typical use cases.
  1. AWS service categories overviewIdentify the main AWS service categories (e.g., compute, storage, database, networking, security) and their purpose.
  2. Compute servicesRecognize AWS compute services such as EC2, Lambda, and Elastic Beanstalk and their primary use cases.
  3. Storage servicesIdentify AWS storage services like S3, EBS, EFS, and Glacier and their appropriate use cases.
  4. Database servicesRecognize AWS database services including RDS, DynamoDB, and Redshift and their primary functions.
  5. Networking and content delivery servicesIdentify networking services such as VPC, Route 53, and CloudFront and their roles in connecting and delivering content.
  6. Security, identity, and compliance servicesRecognize security services like IAM, KMS, and Shield and their purpose in protecting AWS resources.
  7. Management and governance servicesIdentify management services such as CloudWatch, CloudTrail, and Trusted Advisor and their role in monitoring and governing AWS environments.
  8. Application integration servicesRecognize application integration services like SQS, SNS, and Step Functions and their use in decoupling and coordinating applications.
  9. Analytics servicesIdentify analytics services such as Athena, EMR, and QuickSight and their use in processing and visualizing data.
  10. Machine learning and AI servicesRecognize AWS AI/ML services like SageMaker, Rekognition, and Comprehend and their primary applications.
  11. Developer toolsIdentify developer tools such as CodeCommit, CodeBuild, and CodeDeploy and their role in CI/CD workflows.
  12. Customer engagement servicesRecognize customer engagement services like Connect, Pinpoint, and SES and their use in customer communication.
  13. Business applicationsIdentify business applications such as WorkDocs, WorkMail, and Chime and their purpose in business productivity.
  14. Migration and transfer servicesRecognize migration services like AWS Migration Hub, DMS, and Snowball and their use in moving data and applications to AWS.

  1. On-Demand PricingExplain how on-demand pricing works, including its pay-as-you-go nature and lack of long-term commitments.
  2. Savings PlansDescribe Savings Plans, including how they offer lower rates in exchange for a commitment to a consistent amount of usage.
  3. Reserved InstancesExplain Reserved Instances, including how they provide significant discounts for a one- or three-year commitment to specific instance configurations.
  4. Spot InstancesDescribe Spot Instances, including how they offer spare compute capacity at discounted rates that can be interrupted with short notice.
  5. Dedicated HostsExplain Dedicated Hosts, including how they provide a physical server fully dedicated to a single customer for compliance or licensing needs.
  6. Free TierDescribe the AWS Free Tier, including its limited-time and always-free offerings to help customers explore services.
  7. Volume-Based DiscountsExplain how tiered pricing and volume discounts reduce costs as usage increases for certain services.
  8. Data Transfer PricingDescribe how data transfer costs are calculated, including free inbound and varying outbound charges.
  9. Pricing Model Selection CriteriaEvaluate which pricing model is most appropriate based on workload characteristics, such as predictability, flexibility, and cost optimization.
  1. AWS Cost ExplorerUse AWS Cost Explorer to visualize, understand, and analyze AWS costs and usage over time.
  2. AWS BudgetsCreate and manage AWS Budgets to plan and track cost and usage against custom budgets.
  3. AWS Cost Anomaly DetectionSet up AWS Cost Anomaly Detection to identify unusual spending patterns and receive alerts.
  4. AWS Billing ConductorCustomize billing reports and group accounts using AWS Billing Conductor for cost allocation.
  5. AWS Pricing CalculatorEstimate monthly costs for AWS services using the AWS Pricing Calculator.
  6. AWS Cost and Usage ReportGenerate and analyze the AWS Cost and Usage Report for detailed billing data.
  7. AWS Trusted Advisor Cost OptimizationUse AWS Trusted Advisor to identify cost optimization opportunities and reduce spending.
  8. AWS Free TierUnderstand the AWS Free Tier limits and monitor usage to avoid unexpected charges.
  9. Consolidated BillingExplain how consolidated billing aggregates costs across accounts and enables volume discounts.
  10. Cost Allocation TagsApply and use cost allocation tags to categorize and track costs by project or department.
  1. AWS Technical Resources OverviewIdentify the range of technical resources AWS provides, such as documentation, whitepapers, and AWS Support.
  2. AWS Documentation and WhitepapersLocate and use official AWS documentation, whitepapers, and architecture center to understand services and best practices.
  3. AWS Knowledge Center and ForumsUse AWS Knowledge Center and community forums to find answers to common questions and troubleshooting guidance.
  4. AWS Support PlansCompare the features and benefits of Basic, Developer, Business, and Enterprise Support plans.
  5. AWS Support Case ManagementDescribe how to open, manage, and escalate support cases through the AWS Support Center.
  6. AWS Trusted AdvisorExplain how AWS Trusted Advisor provides recommendations for cost optimization, performance, security, and fault tolerance.
  7. AWS Health Dashboard and Personal Health DashboardDifferentiate between the AWS Health Dashboard and Personal Health Dashboard for service health and account-specific events.
  8. AWS Professional Services and Partner NetworkIdentify when to engage AWS Professional Services or AWS Partner Network for specialized technical assistance.
  9. AWS Training and CertificationRecognize AWS training resources, including digital courses, labs, and certification paths, as technical support options.
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Percentages reflect share of the current practice bank, not official exam weightings — no structured per-skill weight is published for CLF-C02, so none is invented.