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所在平台: Udemy |
课程主页: https://www.udemy.com/course/aws-certified-solutions-architect-associate-practice-tests-en/
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课程名称：AWS认证解决方案架构师助理实践测试 课程概述：如果你正在为AWS认证解决方案架构师助理考试（SAA-C03）做准备，那么你来对地方了。本课程提供的实践测试旨在帮助你顺利通过认证考试。这些测试由拥有11年软件行业经验的Abhishek Kumar编写，他目前在一家跨国公司担任AWS基础设施顾问，并且拥有AWS认证解决方案架构师助理和AWS认证安全专家资格。所有问题的难度和复杂性与实际AWS认证考试相同，所有问题都有详细的正确和错误选项解释。如果答案正确，将提供详尽的说明和示意图；如果选项错误，也会提供详细的解释，以帮助你清楚理解相关知识点。该课程设计得非常完善，以至于你无需额外阅读资料或其他实践测试即可通过考试，广泛覆盖了与AWS认证解决方案架构师助理（SAA-C03）考试相关的所有主题。 示例问题：某公司的HTTP应用程序在网络负载均衡器（NLB）后面。NLB的目标组配置为使用一个自动扩展组，其中运行多个EC2实例的Web服务。公司发现NLB未检测到应用程序的HTTP错误，这些错误需要手动重启运行Web服务的EC2实例。公司需要在不编写自定义脚本或代码的情况下提高应用程序的可用性。解决方案架构师应该怎么做？ 选项解释： 选项A错误：启用NLB的HTTP健康检查，将检测到HTTP错误，但仍需手动重启EC2实例，这不符合提高可用性的需求。 选项B错误：在EC2实例上添加cron作业以检查本地应用程序日志，虽然有助于提高可用性，但需要编写自定义脚本或代码，这与要求不符。 选项C正确：通过用应用负载均衡器（ALB）替换NLB，启用HTTP健康检查，ALB将自动检测HTTP错误并采取适当措施，提高应用程序的可用性，同时无需编写自定义脚本或代码，这符合公司的要求。 选项D错误：创建Amazon Cloud Watch报警以监测NLB的不健康主机计数指标虽然可以检测HTTP错误，但依然需要手动更换实例，无法实现自动化。 祝你在AWS认证解决方案架构师助理考试中好运，学习愉快！
Are you Getting ready for SAA-C03, the AWS Certified Solutions Architect Associate exam? Then you have come to the right place. These practice tests are designed to help you Ace the certification exam.These practice tests have been authored by Abhishek Kumar who has 11 years of experience in the Software Industry and is currently working as an AWS infrastructure consultant in a multinational company. He is AWS Certified Solution Architect Associate and AWS Certified Security Specialist. The questions are of the same level and complexity as in the real AWS certification exam. All the questions have a detailed explanation of the correct and incorrect options. If an answer is correct, an exhaustive explanation is provided along with a diagram. If an option is incorrect, a detailed explanation is provided so that you have a clear understanding of the underlying subject. This course is designed in such a way that you will not need any other further reading material or practice tests to clear the exam. This course extensively covers all the topics of the AWS Certified Solutions Architect Associate (SAA-C03) exam.Sample Question:A company's HTTP application is behind a Network Load Balancer (NLB). The NLB's target group is configured to use an Amazon EC2 Auto Scaling group with multiple EC2 instances that run the web service.The company notices that the NLB is not detecting HTTP errors for the application. These errors require a manual restart of the EC2 instances that run the web service. The company needs to improve the application's availability without writing custom scripts or code.What should a solutions architect do to meet these requirements?Enable HTTP health checks on the NLB, supplying the URL of the company's application.Add a cron job to the EC2 instances to check the local application's logs once each minute. If HTTP errors are detected the application will restart.Replace the NLB with an Application Load Balancer. Enable HTTP health checks by supplying the URL of the company's application. Configure an Auto Scaling action to replace unhealthy instances.Create an Amazon Cloud Watch alarm that monitors the UnhealthyHostCount metric for the NLB. Configure an Auto Scaling action to replace unhealthy instances when the alarm is in the ALARM state.Explanation:Option A is Incorrect:Enabling HTTP health checks on the Network Load Balancer (NLB) by supplying the URL of the company's application would detect any HTTP errors, but it would still require a manual restart of the EC2 instances. The goal is to improve the application's availability without manual intervention.Option B is Incorrect:Adding a cron job to the EC2 instances to check the local application's logs once each minute and restarting the application if HTTP errors are detected would improve the availability of the application, but it would require writing custom scripts or code. This is not in line with the requirement of not writing custom scripts or code.Option C is Correct:This solution replaces the Network Load Balancer (NLB) with an Application Load Balancer (ALB), which provides more advanced health-checking capabilities for HTTP applications. By enabling HTTP health checks on the ALB and supplying the URL of the company's application, the ALB will automatically detect HTTP errors and take appropriate actions to improve the application's availability. This can be achieved without writing custom scripts or code, which is one of the requirements of the company. It also configures an Auto Scaling action to replace unhealthy instances, further improving the application's availability.Option D is Incorrect:Creating an Amazon Cloud Watch alarm that monitors the UnhealthyHostCount metric for the NLB and configuring an Auto Scaling action to replace unhealthy instances when the alarm is in the ALARM state would detect HTTP errors, but it would still require a manual replacement of the instances. The goal is to improve the application's availability without manual intervention.Good luck with your AWS Certified Solutions Architect Associate exam and happy learning!!
