AWS Certified Solutions Architect - Associate

• #561

  A web-startup runs its very successful social news application on Amazon EC2 with an Elastic Load Balancer, an Auto-Scaling group of Java/Tomcat application-servers, and DynamoDB as data store. The main web-application best runs on m2 x large instances since it is highly memory- bound Each new deployment requires semi-automated creation and testing of a new AMI for the application servers which takes quite a while and is therefore only done once per week. Recently, a new chat feature has been implemented in nodejs and waits to be integrated in the architecture. First tests show that the new component is CPU bound Because the company has some experience with using Chef, they decided to streamline the deployment process and use AWS OpsWorks as an application life cycle tool to simplify management of the application and reduce the deployment cycles. What configuration in AWS OpsWorks is necessary to integrate the new chat module in the most cost-efficient and flexible way?

  • ACreate one AWS OpsWorks stack, create one AWS OpsWorks layer, create one custom recipe.
  • BCreate one AWS OpsWorks stack create two AWS OpsWorks layers create one custom recipe.
  • CCreate two AWS OpsWorks stacks create two AWS OpsWorks layers create one custom recipe.
  • DCreate two AWS OpsWorks stacks create two AWS OpsWorks layers create two custom recipe.
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  💬Discussion
• #562

  An organization has a statutory requirement to protect the data at rest for the S3 objects. Which of the below mentioned options need not be enabled by the organization to achieve data security?

  • AMFA delete for S3 objects.
  • BClient side encryption.
  • CBucket versioning.
  • DData replication.
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  💬Discussion
• #563

  What is the Reduced Redundancy option in Amazon S3?

  • ALess redundancy for a lower cost.
  • BIt doesn't exist in Amazon S3, but in Amazon EBS.
  • CIt allows you to destroy any copy of your files outside a specific jurisdiction.
  • DIt doesn't exist at all.
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  💬Discussion
• #564

  Will I be charged if the DB instance is idle?

  • AYes.
  • BOnly is running in GovCloud.
  • COnly if running in VPC.
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  💬Discussion
• #565

  How many types of block devices does Amazon EC2 support?

  • A4.
  • B5.
  • C2.
  • D1.
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  💬Discussion
• #566

  What does specifying the mapping /dev/sdc=none when launching an instance do?

  • APrevents /dev/sdc from creating the instance.
  • BPrevents /dev/sdc from deleting the instance.
  • CSet the value of /dev/sdc to 'zero'.
  • DPrevents /dev/sdc from attaching to the instance.
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  💬Discussion
• #567

  True or False: A VPC contains multiple subnets, where each subnet can span multiple Availability Zones.

  • AThis is true only if requested during the set-up of VPC.
  • BThis is true.
  • CThis is false.
  • DThis is true only for US regions.
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  💬Discussion
• #568

  You are planning and configuring some EBS volumes for an application. In order to get the most performance out of your EBS volumes, you should attach them to an instance with enough [...] to support your volumes.

  • Aredundancy.
  • Bstorage.
  • Cbandwidth.
  • Dmemory.
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  💬Discussion
• #569

  Select the most correct The device name /dev/sdal (within Amazon EC2) is [...].

  • Apossible for EBS volumes.
  • Breserved for the root device.
  • Crecommended for EBS volumes.
  • Drecommended for instance store volumes.
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  💬Discussion
• #570

  True or False: Amazon EC2 has no Amazon Resource Names (ARNs) because you can't specify a particular Amazon EC2 resource in an IAM policy.

  • ATrue.
  • BFalse.
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  💬Discussion
• #571

  Can I attach more than one policy to a particular entity?

  • AYes always.
  • BOnly if within GovCloud.
  • CNo.
  • DOnly if within VPC.
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  💬Discussion
• #572

  The one-time payment for Reserved Instances is [...] refundable if the reservation is cancelled.

  • Aalways.
  • Bin some circumstances.
  • Cnever.
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  💬Discussion
• #573

  A user comes to you and wants access to Amazon CloudWatch but only wants to monitor a specific LoadBalancer. Is it possible to give him access to a specific set of instances or a specific LoadBalancer?

  • ANo because you can't use IAM to control access to CloudWatch data for specific resources.
  • BYes. You can use IAM to control access to CloudWatch data for specific resources.
  • CNo because you need to be Sysadmin to access CloudWatch data.
  • DYes. Any user can see all CloudWatch data and needs no access rights.
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• #574

  Which of the following is true of Amazon EC2 security group?

  • AYou can modify the outbound rules for EC2-Classic.
  • BYou can modify the rules for a security group only if the security group controls the traffic for just one instance.
  • CYou can modify the rules for a security group only when a new instance is created.
  • DYou can modify the rules for a security group at any time.
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  💬Discussion
• #575Choose 2

  For which of the following use cases are Simple Workflow Service (SWF) and Amazon EC2 an appropriate solution? (Choose 2 answers)

  • AUsing as an endpoint to collect thousands of data points per hour from a distributed fleet of sensors.
  • BManaging a multi-step and multi-decision checkout process of an e-commerce website.
  • COrchestrating the execution of distributed and auditable business processes.
  • DUsing as an SNS (Simple Notification Service) endpoint to trigger execution of video transcoding jobs.
  • EUsing as a distributed session store for your web application.
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  💬Discussion
• #576

  Resources that are created in AWS are identified by a unique identifier called an

  • AAmazon Resource Number.
  • BAmazon Resource Nametag.
  • CAmazon Resource Name.
  • DAmazon Resource Namespace.
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  💬Discussion
• #577

  You have a web application running on six Amazon EC2 instances, consuming about 45% of resources on each instance. You are using auto-scaling to make sure that six instances are running at all times. The number of requests this application processes is consistent and does not experience spikes. The application is critical to your business and you want high availability at all times. You want the load to be distributed evenly between all instances. You also want to use the same Amazon Machine Image (AMI) for all instances. Which of the following architectural choices should you make?

  • ADeploy 6 EC2 instances in one Availability Zone and use Amazon Elastic Load Balancer.
  • BDeploy 3 EC2 instances in one region and 3 in another region and use Amazon Elastic Load Balancer.
  • CDeploy 3 EC2 instances in one Availability Zone and 3 in another Availability Zone and use Amazon Elastic Load Balancer.
  • DDeploy 2 EC2 instances in three regions and use Amazon Elastic Load Balancer.
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  💬Discussion
• #578

  Can the string value of 'Key' be prefixed with laws?

  • ANo.
  • BOnly for EC2 not S3.
  • CYes.
  • DOnly for S3 not EC.
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  💬Discussion
• #579

  Your company hosts a social media site supporting users in multiple countries. You have been asked to provide a highly available design for the application that leverages multiple regions for the most recently accessed content and latency sensitive portions of the web site. The most latency sensitive component of the application involves reading user preferences to support web site personalization and ad selection. In addition to running your application in multiple regions, which option will support this application's requirements?

  • AServe user content from S3. CloudFront and use Route 53 latency-based routing between ELBs in each region. Retrieve user preferences from a local DynamoDB table in each region and leverage SQS to capture changes to user preferences with SQS workers for propagating updates to each table.
  • BUse the S3 Copy API to copy recently accessed content to multiple regions and serve user content from S3. CloudFront with dynamic content and an ELB in each region. Retrieve user preferences from an ElastiCache cluster in each region and leverage SNS notifications to propagate user preference changes to a worker node in each region.
  • CUse the S3 Copy API to copy recently accessed content to multiple regions and serve user content from S3 CloudFront and Route 53 latency-based routing Between ELBs in each region. Retrieve user preferences from a DynamoDB table and leverage SQS to capture changes to user preferences with SQS workers for propagating DynamoDB updates.
  • DServe user content from S3. CloudFront with dynamic content, and an ELB in each region. Retrieve user preferences from an ElastiCache cluster in each region and leverage Simple Workflow (SWF) to manage the propagation of user preferences from a centralized DB to each ElastiCache cluster.
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  💬Discussion
• #580

  You require the ability to analyze a large amount of data, which is stored on Amazon S3 using Amazon Elastic MapReduce. You are using the cc2 8x large Instance type, whose CPUs are mostly idle during processing. Which of the below would be the most cost efficient way to reduce the runtime of the job?

  • ACreate more smaller flies on Amazon S3.
  • BAdd additional cc2 8x large instances by introducing a task group.
  • CUse smaller instances that have higher aggregate 1/0 performance.
  • DCreate fewer, larger fi les on Amazon S3.
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  💬Discussion

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