Amazon SOA-C02 Online Practice Questions and Exam Preparation

Amazon SOA-C02 Online Questions & Answers

• Question 421:

  A SysOps administrator is optimizing the cost of a workload. The workload is running in multiple AWS Regions and is using AWS Lambda with Amazon EC2 On-Demand Instances for the compute. The overall usage is predictable. The amount of compute that is consumed in each Region varies, depending on the users' locations.

  Which approach should the SysOps administrator use to optimize this workload?

  A. Purchase Computer Savings Plans based on the usage during the past 30 days.
  B. Purchase Convertible Reserved Instances by calculating the usage baseline.
  C. Purchase EC2 Instance Savings Plane based on the usage during the past 30 days
  D. Purchase Standard Reserved Instances by calculating the usage baseline.
  A. Purchase Computer Savings Plans based on the usage during the past 30 days.

  ---

  Explanation Explanation/Reference:The computer Saving plan is the only one that applies to Lambda usage. https://docs.aws.amazon.com/savingsplans/latest/userguide/what-is-savings-plans.html

• Question 422:

  A company is using an Amazon Aurora MySQL DB cluster that has point-in-time recovery, backtracking, and automatic backup enabled. A SysOps administrator needs to be able to roll back the DB cluster to a specific recovery point within the previous 72 hours. Restores must be completed in the same production DB cluster.

  Which solution will meet these requirements?

  A. Create an Aurora Replica. Promote the replica to replace the primary DB instance.
  B. Create an AWS Lambda function to restore an automatic backup to the existing DB cluster.
  C. Use backtracking to rewind the existing DB cluster to the desired recovery point.
  D. Use point-in-time recovery to restore the existing DB cluster to the desired recovery point.
  C. Use backtracking to rewind the existing DB cluster to the desired recovery point.

  ---

  Explanation Explanation/Reference:"The limit for a backtrack window is 72 hours.....Backtracking is only available for DB clusters that were created with the Backtrack feature enabled....Backtracking "rewinds" the DB cluster to the time you specify. Backtracking is not a replacement for backing up your DB cluster so that you can restore it to a point in time....You can backtrack a DB cluster quickly. Restoring a DB cluster to a point in time launches a new DB cluster and restores it from backup data or a DB cluster snapshot, which can take hours." https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managi ng.Backtrack.html

• Question 423:

  A company has a stateless application that is hosted on a fleet of 10 Amazon EC2 On- Demand Instances in an Auto Scaling group. A minimum of 6 instances are needed to meet service requirements. Which action will maintain uptime for the application MOST cost-effectively?

  A. Use a Spot Fleet with an On-Demand capacity of 6 instances.
  B. Update the Auto Scaling group with a minimum of 6 On-Demand Instances and a maximum of 10 On-Demand Instances.
  C. Update the Auto Scaling group with a minimum of 1 On-Demand Instance and a maximum of 6 On-Demand Instances.
  D. Use a Spot Fleet with a target capacity of 6 instances.
  A. Use a Spot Fleet with an On-Demand capacity of 6 instances.

• Question 424:

  A company is running distributed computing software to manage a fleet of 20 Amazon EC2 instances for calculations. The fleet includes 2 control nodes and 18 task nodes to run the calculations. Control nodes can automatically start the task

  nodes.

  Currently, all the nodes run on demand. The control nodes must be available 24 hours a day, 7 days a week. The task nodes run for 4 hours each day. A SysOps administrator needs to optimize the cost of this solution.

  Which combination of actions will meet these requirements? (Choose two.)

  A. Purchase EC2 Instance Savings Plans for the control nodes.
  B. Use Dedicated Hosts for the control nodes.
  C. Use Reserved Instances for the task nodes.
  D. Use Spot Instances for the control nodes. Use On-Demand Instances if there is no Spot availability.
  E. Use Spot Instances for the task nodes. Use On-Demand Instances if there is no Spot availability.
  A. Purchase EC2 Instance Savings Plans for the control nodes.
  E. Use Spot Instances for the task nodes. Use On-Demand Instances if there is no Spot availability.

• Question 425:

  A company uses an Amazon CloudFront distribution to deliver its website. Traffic logs for the website must be centrally stored, and all data must be encrypted at rest.

  Which solution will meet these requirements?

  A. Create an Amazon OpenSearch Service (Amazon Elasticsearch Service) domain with internet access and server-side encryption that uses the default AWS managed key. Configure CloudFront to use the Amazon OpenSearch Service (Amazon Elasticsearch Service) domain as a log destination.
  B. Create an Amazon OpenSearch Service (Amazon Elasticsearch Service) domain with VPC access and server-side encryption that uses AES-256 Configure CloudFront to use the Amazon OpenSearch Service (Amazon Elasticsearch Service) domain as a log destination.
  C. Create an Amazon S3 bucket that Is configured with default server-side encryption that uses AES-256. Configure CloudFront to use the S3 bucket as a log destination.
  D. Create an Amazon S3 bucket that is configured with no default encryption. Enable encryption in the CloudFront distribution, and use the S3 bucket as a log destination.
  C. Create an Amazon S3 bucket that Is configured with default server-side encryption that uses AES-256. Configure CloudFront to use the S3 bucket as a log destination.

• Question 426:

  A custom application must be installed on all Amazon EC2 instances. The application is small, updated frequently, and can be installed automatically. How can the application be deployed on new EC2 instances?

  A. Launch a script that downloads and installs the application using Amazon EC2 user data.
  B. Create a custom API using Amazon API Gateway to call an installation executable from an AWS CloudFormation template.
  C. Use AWS Systems Manager to inject the application into an AMI.
  D. Configure AWS CodePipeline to deploy code changes and updates.
  A. Launch a script that downloads and installs the application using Amazon EC2 user data.

• Question 427:

  A SysOps administrator needs to develop a solution that provides email notification and inserts a record into a database every time a file is put into an Amazon S3 bucket.

  What is the MOST operationally efficient solution that meets these requirements?

  A. Set up an S3 event notification that targets an Amazon Simple Notification Service (Amazon SNS) topic Create two subscriptions for the SNS topic Use one subscription to send the email notification Use the other subscription to invoke an AWS Lambda function that inserts the record into the database
  B. Set up an Amazon CloudWatch alarm that enters ALARM state whenever an object is created in the S3 bucket Configure the alarm to invoke an AWS Lambda (unction that sends the email notification and inserts the record into the database
  C. Create an AWS Lambda function to send the email notification and insert the record into the database whenever a new object is detected in the S3 bucket invoke the function every minute with an Amazon EventBridge (Amazon CloudWatch Events) scheduled rule.
  D. Set up two S3 event notifications Target a separate AWS Lambda function with each notification Configure one function to send the email notification Configure the other function to insert the record into the database
  A. Set up an S3 event notification that targets an Amazon Simple Notification Service (Amazon SNS) topic Create two subscriptions for the SNS topic Use one subscription to send the email notification Use the other subscription to invoke an AWS Lambda function that inserts the record into the database

  ---

  https://aws.amazon.com/pt/premiumsupport/knowledge-center/lambda-subscribe-sns-topic-same-account/

• Question 428:

  A company needs to deploy instances of an application and associated infrastructure to multiple AWS Regions. The company wants to use a single AWS CloudFormation template to achieve this goal. The company uses AWS Organizations and wants to administer and run this template from a central administration account.

  What should a SysOps administrator do to meet these requirements?

  A. Create a CloudFormation template that is stored in Amazon S3. Configure Cross-Region Replication (CRR) on the S3 bucket. Reference the required accounts and remote Regions in the input template parameters.
  B. In the central administration account, create a CloudFormation primary template that loads CloudFormation nested stacks from Amazon S3 buckets in the target Regions.
  C. Create CloudFormation nested stacks by using a primary template in the central administration account. Configure the required accounts and Regions for deployment of the nested stacks.
  D. Create a CloudFormation stack set that includes service-managed permissions. Deploy the stack set into the required accounts and Regions from the central administration account.
  D. Create a CloudFormation stack set that includes service-managed permissions. Deploy the stack set into the required accounts and Regions from the central administration account.

  ---

  Using CloudFormation stack sets with service-managed permissions is the recommended approach when you need to deploy CloudFormation stacks to multiple AWS accounts and/or regions from a central administration account. Stack sets simplify the process of deploying and managing infrastructure across multiple accounts and regions, ensuring consistency and ease of administration

• Question 429:

  A company operates compute resources in a VPC and in the company's on-premises data center. The company already has an AWS Direct Connect connection between the VPC and the on-premises data center. A SysOps administrator needs to ensure that Amazon EC2 instances in the VPC can resolve DNS names for hosts in the on-premises data center.

  Which solution will meet this requirement with the LEAST amount of ongoing maintenance?

  A. Create an Amazon Route 53 private hosted zone. Populate the zone with the hostnames and IP addresses of the hosts in the on-premises data center.
  B. Create an Amazon Route 53 Resolver outbound endpoint. Add the IP addresses of an on-premises DNS server for the domain names that need to be forwarded.
  C. Set up a forwarding rule for reverse DNS queries in Amazon Route 53 Resolver. Set the enableDnsHostnames attribute to true for the VPC.
  D. Add the hostnames and IP addresses for the on-premises hosts to the /etc/hosts file of each EC2 instance.
  B. Create an Amazon Route 53 Resolver outbound endpoint. Add the IP addresses of an on-premises DNS server for the domain names that need to be forwarded.

• Question 430:

  A gaming application is deployed on four Amazon EC2 instances in a default VPC. The SysOps administrator has noticed consistently high latency in responses as data is transferred among the four instances. There is no way for the administrator to alter the application code.

  The MOST effective way to reduce latency is to relaunch the EC2 instances in:

  A. a dedicated VPC.
  B. a single subnet inside the VPC.
  C. a placement group.
  D. a single Availability Zone.
  C. a placement group.