AMAZON AWS-SOLUTIONS-ARCHITECT-PROFESSIONAL RELIABLE STUDY QUESTIONS | AWS-SOLUTIONS-ARCHITECT-PROFESSIONAL DOWNLOAD PDF

Amazon AWS-Solutions-Architect-Professional Reliable Study Questions | AWS-Solutions-Architect-Professional Download Pdf

Amazon AWS-Solutions-Architect-Professional Reliable Study Questions | AWS-Solutions-Architect-Professional Download Pdf

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Amazon AWS Certified Solutions Architect - Professional Sample Questions (Q218-Q223):

NEW QUESTION # 218
A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR
20.0.0.0/16 by mistake. The user is trying to create another subnet of CIDR 20.0.1.0/24. How can the user create the second subnet?

  • A. The user can modify the first subnet CIDR from the console
  • B. There is no need to update the subnet as VPC automatically adjusts the CIDR of the first subnet based on the second subnet's CIDR
  • C. The user can modify the first subnet CIDR with AWS CLI
  • D. It is not possible to create a second subnet with overlapping IP CIDR without deleting the first subnet.

Answer: D

Explanation:
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user's AWS account. A user can create a subnet with VPC and launch instances inside the subnet. The user can create a subnet with the same size of VPC. However, he cannot create any other subnet since the CIDR of the second subnet will conflict with the first subnet. The user cannot modify the CIDR of a subnet once it is created. Thus, in this case if required, the user has to delete the subnet and create new subnets.
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html


NEW QUESTION # 219
Your system recently experienced down time. During the troubleshooting process you found that a new administrator mistakenly terminated several production EC2 instances.
Which of the following strategies will help prevent a similar situation in the future?
The administrator still must be able to:
- launch, start, stop, and terminate development resources,
- launch and start production instances.

  • A. Leverage EC2 termination protection and multi-factor authentication, which together require users to authenticate before terminating EC2 instances.
  • B. Leverage resource based tagging, along with an IAM user which can prevent specific users from terminating production EC2 resources.
  • C. Create an IAM user and apply an IAM role which prevents users from terminating production EC2 instances.
  • D. Create an IAM user which is not allowed to terminate instances by leveraging production EC2 termination protection.

Answer: B

Explanation:
http://blogs.aws.amazon.com/security/post/Tx29HCT3ABL7LP3/Resource-level-Permissions-for- EC2-Controlling-Management-Access-on-Specific-Ins


NEW QUESTION # 220
Your firm has uploaded a large amount of aerial image data to S3. In the past, in your on- premises environment, you used a dedicated group of servers to batch process this data and used RabbitMQ, an open source messaging system, to get job information to the servers. Once processed the data would go to tape and be shipped offsite. Your manager told you to stay with the current design, and leverage AWS archival storage and messaging services to minimize cost.
Which is correct?

  • A. Use SQS for passing job messages, use CloudWatch alarms to terminate EC2 worker instances when they become idle.
    Once data is processed, change the storage class of the S3 objects to Reduced Redundancy Storage.
  • B. Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SQS.
    Once data is processed, change the storage class of the S3 objects to Reduced Redundancy Storage.
  • C. Use SNS to pass job messages, use CloudWatch alarms to terminate spot worker instances when they become idle.
    Once data is processed, change the storage class of the S3 object to Glacier.
  • D. Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SQS.
    Once data is processed, change the storage class of the S3 objects to Glacier.

Answer: D

Explanation:
The question key part to focus on is "and leverage AWS archival storage and messaging services to minimize cost." For that the storage that is the lowest cost in the answers is Glacier, in addition, the messaging cost is less for SQS then for SNS if they both exceed 1 million transactions which is free. The only answer that satisfies the above two criteria is answer C.
Also, there does not seem to be an urgency in speed of messaging therefore SQS satisfies that need. SNS being more real time delivery mechanism.


NEW QUESTION # 221
You have set up a huge amount of network infrastructure in AWS and you now need to think about monitoring all of this. You decide CloudWatch will best fit your needs but you are unsure of the pricing structure and the limitations of CloudWatch. Which of the following statements is TRUE in relation to the limitations of CloudWatch?

  • A. You get 100 CloudWatch metrics, 100 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free.
  • B. You get 10 CloudWatch metrics, 10 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free.
  • C. You get 100 CloudWatch metrics, 100 alarms, 10,000,000 API requests, and 10,000 Amazon SNS email notifications per customer per month for free.
  • D. You get 10 CloudWatch metrics, 10 alarms, 1,000 API requests, and 100 Amazon SNS email notifications per customer per month for free.

Answer: B

Explanation:
Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real-time. You can use CloudWatch to collect and track metrics, which are the variables you want to measure for your resources and applications.
CloudWatch has the following limits:
You get 10 CloudWatch metrics, 10 alarms, 1,000,000 API requests, and 1,000 Amazon SNS email notifications per customer per month for free.
You can assign up to 10 dimensions per metric.
You can create up to 5000 alarms per AWS account.
Metric data is kept for 2 weeks.
The size of a PutMetricData request is limited to 8KB for HTTP GET requests and 40KB for HTTP POST requests.
You can include a maximum of 20 MetricDatum items in one PutMetricData request. A MetricDatum can contain a single value or a StatisticSet representing many values.
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/cloudwatch_limits.html


NEW QUESTION # 222
An on-premises application will be migrated to the cloud. The application consists of a single Elasticsearch virtual machine with data source feeds from local systems that will not be migrated, and a Java web application on Apache Tomcat running on three virtual machines. The Elasticsearch server currently uses 1 TB of storage out of 16 TB available storage, and the web application is updated every 4 months. Multiple users access the web application from the Internet. There is a 10Gbit AWS Direct Connect connection established, and the application can be migrated over a schedules 48-hour change window.
Which strategy will have the LEAST impact on the Operations staff after the migration?

  • A. Create an Amazon ES cluster for Elasticsearch and a public AWS Elastic Beanstalk environment for the web application. Use AWS DMS to replicate Elasticsearch data. When replication has finished, move data source feeds to the new Amazon ES cluster endpoint and move users to the new web application.
  • B. Use the AWS SMS to replicate the virtual machines into AWS. When the migration is complete, pause the data source feeds and start the migrated Elasticsearch and web application instances.
    Place the web application instances behind a public Elastic Load Balancer. Move the data source feeds to the new Elasticsearch server and move users to the new web Application Load Balancer.
  • C. Create an Elasticsearch server on Amazon EC2 right-sized with 2 TB of Amazon EBS and a public AWS Elastic Beanstalk environment for the web application. Pause the data sources, export the Elasticsearch index from on premises, and import into the EC2 Elasticsearch server.
    Move data source feeds to the new Elasticsearch server and move users to the web application.
  • D. Create an Amazon ES cluster for Elasticsearch and a public AWS Elastic Beanstalk environment for the web application. Pause the data source feeds, export the Elasticsearch index from on premises, and import into the Amazon ES cluster. Move the data source feeds to the new Amazon ES cluster endpoint and move users to the new web application.

Answer: A

Explanation:
A: uses EC2s, and that requires maintenance after the migration. contradicting with least operation after migration.
C: Good, but again uses self Elastic Search and EC2s, which requires operation maintenance staff after migration.
D: the sequence of moving the index to ES is wrong. They should have replicate then pause!
However, answer "B" uses DMS as a replication tool.
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_Target.Elasticsearch.html
https://aws.amazon.com/blogs/database/introducing-amazon-elasticsearch-service-as-a-target-in- aws-database-migration-service/


NEW QUESTION # 223
......

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