Amazon CLF-C02 Online Practice Questions and Exam Preparation

Amazon CLF-C02 Online Questions & Answers

• Question 891:

  A company has data lakes designed for high performance computing (HPC) workloads. Which Amazon EC2 instance type should the company use to meet these requirements?

  A. General purpose instances
  B. Compute optimized instances
  C. Memory optimized instances
  D. Storage optimized instances
  B. Compute optimized instances

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  Explanation

  For high performance computing (HPC) workloads, compute resources play a critical role in delivering the necessary processing power and efficiency. HPC workloads are typically computationally intensive, often requiring a large number of CPU cycles to solve complex problems. These workloads benefit most from instances that provide powerful processors and high clock speeds, which is why Compute optimized instances (Answer B) are the best choice in this scenario. Why Compute Optimized Instances (C Instances)? Designed for Compute-Intensive Tasks: Compute optimized instances in Amazon EC2, such as the C6i or C5 series, are designed to offer high compute performance, low cost, and consistent CPU power. These instances are ideal for workloads like HPC, which require a high level of processing per second. High Performance CPUs: The compute optimized instance family typically uses the latest-generation processors, such as AWS Graviton2 or Intel Xeon Scalable processors, which provide a higher number of virtual CPUs (vCPUs) and increased clock speeds compared to other instance types. This matches the need for HPC workloads to maximize throughput and minimize compute times. Use Case Alignment: HPC workloads such as genomic research, computational fluid dynamics (CFD), financial modeling, and 3D rendering require high levels of CPU-bound tasks. Compute optimized instances provide the best CPU-to-memory ratio to handle these efficiently, leading to faster processing times and cost efficiency. Comparison with Other Instance Types:

  A. General Purpose Instances: These are versatile and balanced instances (e.g., T3 or M6i) that are suitable for various workloads but do not provide the specialized compute performance required for HPC. They offer a balanced mix of compute, memory, and networking but are not optimal for HPC workloads where computational power is critical.

  C. Memory Optimized Instances: While these instances (e.g., R5, X1) are ideal for memory-intensive workloads such as in-memory databases (e.g., SAP HANA) or real-time data analytics, they do not provide the specialized compute power necessary for HPC tasks that require heavy CPU processing.

  D. Storage Optimized Instances: These instances (e.g., I3, D3) are designed for workloads that need high disk throughput, like big data or transactional databases. While these are excellent for storage-heavy applications, they are not optimized for compute-intensive HPC workloads. Amazon EC2 Compute Optimized Family (C Instances) C6i Instances: Based on 3rd Gen Intel Xeon Scalable processors, C6i instances offer up to 15% better price/performance compared to previous generation C5 instances. These are ideal for high compute and HPC workloads. C5 Instances: These are built for compute-intensive workloads like batch processing, distributed analytics, and high-performance web servers. They offer a high level of sustained CPU performance. AWS Reference Links: Amazon EC2 Instance Types Amazon EC2 Compute Optimized Instances HPC on AWS In conclusion, Compute optimized instances (B) are the best choice for HPC workloads due to their high compute performance, optimized CPU architecture, and suitability for computationally intensive tasks.

• Question 892:

  Which AWS service or feature gives users the ability to run containers and Kubernetes applications without the need to manage scaling?

  A. Amazon Elastic Container Registry (Amazon ECR)
  B. Elastic network interface
  C. AWS Fargate
  D. Amazon EC2
  C. AWS Fargate

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  Explanation

• Question 893:

  A company is running its application in the AWS Cloud and wants to protect against a DDoS attack. The company's security team wants near real-time visibility into DDoS attacks.

  Which AWS service or traffic filter will meet these requirements with the MOST features for DDoS protection?

  A. AWS Shield Advanced
  B. AWS Shield
  C. Amazon GuardDuty
  D. Network ACLs
  A. AWS Shield Advanced

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  Explanation

  AWS Shield Advanced is a managed Distributed Denial of Service (DDoS) protection service that safeguards applications running on AWS. AWS Shield Advanced provides you with 24x7 access to the AWS DDoS Response Team (DRT) and protection against DDoS attacks of any size or duration. AWS Shield Advanced also provides near real-time visibility into attacks, advanced attack mitigation capabilities, and integration with AWS WAF and AWS Firewall Manager. AWS Shield is a standard service that provides always-on detection and automatic inline mitigations to minimize application downtime and latency, but it does not offer the same level of features and support as AWS Shield Advanced. Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior, but it does not provide DDoS protection. Network ACLs are stateless filters that can be associated with a subnet to control the traffic to and from the subnet, but they are not designed to protect against DDoS attacks.

• Question 894:

  A social media company wants to protect its web application from common web exploits such as SQL injections and cross-site scripting.

  Which AWS service will meet these requirements?

  A. Amazon Inspector
  B. AWS WAF
  C. Amazon GuardDuty
  D. Amazon CloudWatch
  B. AWS WAF

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  Explanation

  AWS WAF is a web application firewall service that helps protect web applications from common web exploits that could affect availability, compromise security, or consume excessive resources. AWS WAF gives you control over which traffic

  to allow or block to your web applications by defining customizable web security rules. You can use AWS WAF to create rules that block common attack patterns, such as SQL injection or cross-site scripting, and rules that filter out specific

  traffic patterns you define. AWS WAF also integrates with other AWS services, such as Amazon CloudFront, Amazon API Gateway, AWS AppSync, and AWS Load Balancer, to provide a comprehensive defense against web attacks.

  Therefore, AWS WAF meets the requirements of the social media company, compared to the other options.

  The other options are not suitable for the social media company's requirements, because:

  Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on AWS. Amazon Inspector automatically assesses applications for exposure, vulnerabilities, and

  deviations from best practices. However, Amazon Inspector does not provide a web application firewall service that can block malicious web requests3. Amazon GuardDuty is a threat detection service that continuously monitors for malicious

  activity and unauthorized behavior to protect your AWS accounts, workloads, and data stored in Amazon S3. Amazon GuardDuty analyzes and processes the following data sources: VPC Flow Logs, AWS CloudTrail event logs, and DNS

  logs. However, Amazon GuardDuty does not provide a web application firewall service that can block malicious web requests. Amazon CloudWatch is a monitoring and observability service that provides data and actionable insights to monitor

  your applications, respond to system-wide performance changes, optimize resource utilization, and get a unified view of operational health. Amazon CloudWatch collects monitoring and operational data in the form of logs, metrics, and events,

  and visualizes it using automated dashboards, alarms, and notifications. However, Amazon CloudWatch does not provide a web application firewall service that can block malicious web requests.

  References:

  What Is AWS WAF? - AWS WAF, AWS Firewall Manager, and AWS Shield Advanced

  AWS WAF Features - AWS WAF, AWS Firewall Manager, and AWS Shield Advanced

  What Is Amazon Inspector? - Amazon Inspector

  What Is Amazon GuardDuty? - Amazon GuardDuty

  [What Is Amazon CloudWatch? - Amazon CloudWatch]

• Question 895:

  Which AWS service is always available free of charge to users?

  A. Amazon Athena
  B. AWS Identity and Access Management (IAM)
  C. AWS Secrets Manager
  D. Amazon ElastiCache
  B. AWS Identity and Access Management (IAM)

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  Explanation

  AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources for your users. You use IAM to control who can use your AWS resources (authentication) and what resources they can use and in what ways (authorization). IAM is always available free of charge to users4.

• Question 896:

  A company plans to deploy containers on AWS. The company wants full control of the compute resources that host the containers. Which AWS service will meet these requirements?

  A. Amazon Elastic Kubernetes Service (Amazon EKS)
  B. AWS Fargate
  C. Amazon EC2
  D. Amazon Elastic Container Service (Amazon ECS)
  C. Amazon EC2

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  Explanation

• Question 897:

  Which AWS tool gives users the ability to plan their service usage, service costs, and instance reservations, and also allows them to set custom alerts when their costs or usage exceed established thresholds?

  A. Cost Explorer
  B. AWS Budgets
  C. AWS Cost and Usage Report
  D. Reserved Instance reporting
  B. AWS Budgets

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  Explanation

  "Using AWS Budgets, you can set a budget that alerts you when you exceed (or are forecasted to exceed) your budgeted cost or usage amount. You can also set alerts based on your RI or Savings Plans Utilization and Coverage using AWS

  Budgets."

  https://aws.amazon.com/aws-cost-management/aws-budgets/faqs/

• Question 898:

  A company wants to automate infrastructure deployment by using infrastructure as code (IaC). The company wants to scale production stacks so the stacks can be deployed in multiple AWS Regions. Which AWS service will meet these requirements?

  A. Amazon CloudWatch
  B. AWS Config
  C. AWS Trusted Advisor
  D. AWS CloudFormation
  D. AWS CloudFormation

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  Explanation

  "AWS CloudFormation gives you an easy way to model a collection of related AWS and third-party resources, provision them quickly and consistently, and manage them throughout their lifecycles, by treating infrastructure as code. A CloudFormation template describes your desired resources and their dependencies so you can launch and configure them together as a stack. You can use a template to create, update, and delete an entire stack as a single unit, as often as you need to, instead of managing resources individually. You can manage and provision stacks across multiple AWS accounts and AWS Regions."

  https://aws.amazon.com/cloudformation/features/

• Question 899:

  Which AWS service helps users plan and track their server and application inventory migration data to AWS?

  A. Amazon CloudWatch
  B. AWS DataSync
  C. AWS Migration Hub
  D. AWS Application Migration Service
  C. AWS Migration Hub

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  Explanation

  AWS Migration Hub assists users in planning and tracking the progress of their server and application migrations. It centralizes migration tracking across various AWS services, providing visibility into application inventory and migration status. While AWS Application Migration Service also assists with migrations, Migration Hub is specifically designed for tracking migration data comprehensively.

• Question 900:

  A company wants a solution that will automatically adjust the number of Amazon EC2 instances that are being used based on the current load. Which AWS offering will meet these requirements?

  A. Dedicated Hosts
  B. Placement groups
  C. Auto Scaling groups
  D. Reserved Instances
  C. Auto Scaling groups

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  Explanation