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所在平台: Udemy |
课程主页: https://www.udemy.com/course/aws-certified-cloud-practitioner-practice-tests-mc/
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课程名称:AWS认证云从业者(CLF-C02)模拟考试 课程概述:您是否希望成为一名AWS认证云从业者?我们的课程“AWS认证云从业者6套模拟考试”旨在帮助您成功。课程提供390个独特的高质量考试题,涵盖六套全面的模拟考试,涵盖AWS认证云从业者考试的所有基本领域。每道题目都附有详细解释,确保您理解获得认证所需的关键概念和原则。无论您是初学者还是希望验证技能的从业者,此课程都将增强您的信心和知识,使您为考试做好充分准备。立即开始您的AWS认证成功之旅吧!我们建议您重做这些模拟考试,直到您稳定地获得80%或更高的得分——这时您就准备好参加考试并取得优异成绩了。 示例问题:您的一个新同事需要帮助保护EC2实例,他在该实例上部署了网页应用程序,希望确保只允许HTTP和HTTPS流量。您会向他推荐哪种选项以确保只允许HTTP和HTTPS流量访问EC2实例? 推荐答案:安全组(Security Group)。安全组作为EC2实例的虚拟防火墙,能够控制进出流量,非常适合确保仅允许HTTP(端口80)和HTTPS(端口443)流量。 总结说明:安全组在实例级别操作,提供状态检测,可精确控制流量并易于配置。正确选择安全组的原因包括:直接与EC2实例关联、状态特性、细粒度控制及管理简便。 如何配置安全组以允许HTTP和HTTPS:创建一个安全组,添加入站规则用于HTTP和HTTPS流量,然后将安全组分配给EC2实例。 其他选项说明: - 网络ACL:在子网级别操作,且是无状态,不自动允许响应流量。 - AWS Shield:是管理的DDoS防护服务,不控制EC2实例的特定流量类型。 - 虚拟私有云(VPC):提供网络基础设施,但不控制特定实例的流量。 资源链接:AWS安全组,AWS网络ACL,AWS Shield,Amazon VPC。
Are you aiming to become an AWS Certified Cloud Practitioner? Our course, "AWS Certified Cloud Practitioner 6 Practice Exams," is meticulously crafted to help you succeed. With 390 unique, high-quality test questions, spread across six comprehensive practice exams, this course covers all the essential domains of the AWS Certified Cloud Practitioner exam. Each question comes with detailed explanations, ensuring you understand the key concepts and principles required for the certification. Whether you're a beginner or an experienced professional looking to validate your skills, this course will boost your confidence and knowledge, making you exam-ready. Begin your journey to AWS certification success today!We recommend re-taking these practice tests until you consistently score 80% or higher - that's when you're ready to take the exam and achieve an excellent score! Sample Question:One of your teammates, who is new to AWS, needs your help protecting an EC2 instance. He has deployed a Web application on that EC2 instance. The teammate wants to ensure that only HTTP and HTTPS traffic are allowed to the EC2 instance. Which of the following options would you recommend to your teammate to ensure that only HTTP and HTTPS traffic are allowed to the EC2 instance?Network ACLsAWS ShieldVirtual Private Cloud (VPC)Security GroupCorrect answerSecurity Group: Security Groups act as a virtual firewall for your EC2 instances and control inbound and outbound traffic. They are the most suitable option for ensuring that only HTTP and HTTPS traffic are allowed to an EC2 instance as they can be configured to allow specific protocols and ports, such as port 80 for HTTP and port 443 for HTTPS.Overall explanationSecurity Groups are virtual firewalls for your instance to control inbound and outbound traffic. They operate at the instance level and provide stateful filtering of ingress and egress traffic. Here's why Security Groups are the correct choice:Instance-Level Security:Security Groups are directly associated with EC2 instances. They allow you to specify which traffic is allowed to reach your instances.Stateful Nature:Security Groups are stateful, meaning that if you allow an incoming request from a specific IP and port, the response is automatically allowed regardless of outbound rules.Granular Control:You can specify rules based on protocol (e.g., TCP), port number (e.g., 80 for HTTP, 443 for HTTPS), and source/destination IP address or CIDR block.Ease of Use:Security Groups are easy to configure and manage. You can quickly set up rules to allow HTTP (port 80) and HTTPS (port 443) traffic.How to Configure Security Groups for HTTP and HTTPS:Create a Security Group:Navigate to the Amazon EC2 console.Under "Network & Security," select "Security Groups."Click "Create Security Group."Add Inbound Rules:Add a rule for HTTP traffic:Type: HTTPProtocol: TCPPort Range: 80Source: 0.0.0.0/0 (for all IP addresses) or a specific IP rangeAdd a rule for HTTPS traffic:Type: HTTPSProtocol: TCPPort Range: 443Source: 0.0.0.0/0 (for all IP addresses) or a specific IP rangeAssign Security Group to EC2 Instance:Attach the newly created Security Group to your EC2 instance.Why Other Options are Incorrect:Network ACLs:Network ACLs operate at the subnet level, not the instance level, and are stateless, meaning they do not automatically allow response traffic.AWS Shield:AWS Shield is a managed Distributed Denial of Service (DDoS) protection service. It does not control specific traffic types to EC2 instances.Virtual Private Cloud (VPC):A VPC is a virtual network dedicated to your AWS account. While VPCs provide networking infrastructure, they do not control traffic to specific instances. Security Groups within the VPC control traffic.Resources:AWS Security GroupsAWS Network ACLsAWS ShieldAmazon VPC