AWS-Solutions-Architect-Professional模擬対策: AWS Certified Solutions Architect - Professional大歓迎問題集AWS-Solutions-Architect-Professional試験関連赤本

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AWS-Solutions-Architect-Professional Certification試験は、Amazon Web Services（AWS）でスケーラブル、高度に利用可能な、および障害耐性システムの設計と展開のスキルと知識を検証したいITプロフェッショナル向けに設計されています。この認定は、AWSを扱った経験があり、スキルを次のレベルに引き上げることを目指している個人に最適です。この認定を取得するには、候補者はAWSアーキテクチャと設計に関連する高度なトピックをカバーする厳格な試験に合格する必要があります。

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Amazon AWS-Solutions-Architect-Professional試験関連赤本 & AWS-Solutions-Architect-Professional無料試験

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AWS-Solutions-Architect-Professional試験を受験するには、すでにAWS Certified Solutions Architect - Associate認定を取得し、AWS上でスケーラブルな分散システムを設計および展開する実務経験が少なくとも2年ある必要があります。試験は75の多肢選択および複数回答問題から構成され、受験者は180分間で回答する必要があります。試験は英語、日本語、韓国語、簡体字中国語で利用可能です。

Amazon AWS Certified Solutions Architect - Professional 認定 AWS-Solutions-Architect-Professional 試験問題 (Q35-Q40):

質問 # 35
A bank is re-architecting its mainframe-based credit card approval processing application to a cloud-native application on the AWS cloud.
The new application will receive up to 1,000 requests per second at peak load. There are multiple steps to each transaction, and each step must receive the result of the previous step. The entire request must return an authorization response within less than 2 seconds with zero data loss.
Every request must receive a response. The solution must be Payment Card Industry Data Security Standard (PCI DSS)- compliant.
Which option will meet all of the bank's objectives with the LEAST complexity and LOWEST cost while also meeting compliance requirements?

A. Create an Amazon API Gateway to process inbound requests using a series of AWS Lambda processes, each with an Amazon SQS input queue. As each step completes, it writes its result to the next step's queue. The final step returns a JSON object with the approval status. Open a support case to increase the limit for the number of concurrent Lambdas to allow room for bursts of activity due to the new application.
B. Create an Amazon API Gateway to process inbound requests using a single AWS Lambda task that performs multiple steps and returns a JSON object with the approval status. Open a support case to increase the limit for the number of concurrent Lambdas to allow room for bursts of activity due to the new application.
C. Create an Application Load Balancer with an Amazon ECS cluster on Amazon EC2 Dedicated instances in a target group to process incoming requests. Use Auto Scaling to scale the cluster out/in based on average CPU utilization. Deploy a web service that processes all of the approval steps and returns a JSON object with the approval status.
D. Deploy the application on Amazon EC2 on Dedicated Instances. Use an Elastic Load Balancer in front of a farm of application servers in an Auto Scaling group to handle incoming requests. Scale out/in based on a custom Amazon CloudWatch metric for the number of inbound requests per second after measuring the capacity of a single instance.

正解：B

解説：
A: The process must complete within 2 seconds. This sounds like what Lambda can do.
B\C: Not the most cost efficient compared to Lambda. Scaling may also not be fast enough.
D: SQS may have data loss due to DLQ? SQS also does not process in order so this may be another problem unless you use FIFO.

質問 # 36
By default, Amazon Cognito maintains the last-written version of the data. You can override this behavior and resolve data conflicts programmatically.
In addition, push synchronization allows you to use Amazon Cognito to send a silent notification to all devices associated with an identity to notify them that new data is available.

A. post
B. pull
C. push
D. get

正解：C

解説：
Explanation
http://aws.amazon.com/cognito/faqs/

質問 # 37
An AWS customer is deploying an application that is composed of an AutoScaling group of EC2 instances.
The customers security policy requires that every outbound connection from these instances to any other service within the customers Virtual Private Cloud must be authenticated using a unique X.509 certificate that contains the specific Instance-id.
In addition, all X.509 certificates must be signed by the customer's key management service in order to be trusted for authentication.
Which of the following configurations will support these requirements?

A. Configure the Auto Scaling group to send an SNS notification of the launch of a new instance to the trusted key management service. Have the key management service generate a signed certificate and send it directly to the newly launched instance.
B. Configure an IAM Role that grants access to an Amazon S3 object containing a signed certificate and configure the Auto Scaling group to launch instances with this role.
Have the instances bootstrap get the certificate from Amazon S3 upon first boot.
C. Configure the launched instances to generate a new certificate upon first boot. Have the key management service poll the AutoScaling group for associated instances and send new instances a certificate signature that contains the specific Instance-id.
D. Embed a certificate into the Amazon Machine Image that is used by the Auto Scaling group. Have the launched instances generate a certificate signature request with the Instance's assigned instance-id to the key management service for signature.

正解：A

解説：
The certificate must be signed by the customers key management service and this is the only option. Using S3 wont have it unique, embedding in AMI wont make it unique, Generating a new certificate by itself would defeat the requirement of getting it signed by customers key management service.
A - Accessing from S3 was fine but how can the file be unique when every time autoscaling generates different instances and instance-id.. Thats not predictable C - Embedding a certificate in AMI cannot make the certificate unique.
D - As the EC2 instances must generate unique X.509 certificate and this must be specific to the instance id. The EC2 instance can generate the certificate itself BUT it is clearly mentioned that the certificate must be signed by the customers key management service and not self signed.

質問 # 38
A company has an application that is deployed on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances are part of an Auto Scaling group. The application has unpredictable workloads and frequently scales out and in. The company's development team wants to analyze application logs to find ways to improve the application's performance. However, the logs are no longer available after instances scale in.
Which solution will give the development team the ability to view the application logs after a scale-in event?

A. Enable access logs for the ALB. Store the logs in an Amazon S3 bucket.
B. Instrument the application with AWS X-Ray tracing.
C. Configure the EC2 instances lo publish logs to Amazon CloudWatch Logs by using the unified CloudWatch agent.
D. Modify the Auto Scaling group to use a step scaling policy.

正解：C

解説：
https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-access-logs.html

質問 # 39
Once the user has set ElastiCache for an application and it is up and running, which services, does Amazon not provide for the user:

A. Automating common administrative tasks such as failure detection and recovery, and software patching.
B. The ability for client programs to automatically identify all of the nodes in a cache cluster, and to initiate and maintain connections to all of these nodes
C. Providing detailed monitoring metrics associated with your Cache Nodes, enabling you to diagnose and react to issues very quickly
D. Providing default Time to Live (TTL) in the AWS Elasticache Redis Implementation for different type of data.

正解：D

解説：
Explanation
Amazon provides failure detection and recovery, and software patching and monitoring tools which is called CloudWatch. In addition it provides also Auto Discovery to automatically identify and initialize all nodes of cache cluster for Amazon ElastiCache.
http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/WhatIs.html

質問 # 40
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