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NEW QUESTION 1
What is the scope of an EC2 security group?

  • A. Availability Zone
  • B. Placement Group
  • C. Region
  • D. VPC

Answer: C

Explanation: A security group is tied to a region and can be assigned only to instances in the same region. You can't enable an instance to communicate with an instance outside its region using security group rules. Traffic
from an instance in another region is seen as WAN bandwidth.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resources.htmI

NEW QUESTION 2
Which of these is not a CIoudFormation Helper Script?

  • A. cfn-signal
  • B. cfn-hup
  • C. cfn-request
  • D. cfn-get-metadata

Answer: C

Explanation: This is the complete list of CloudFormation Helper Scripts: cfn-init, cfn-signal, cfn-get-metadata, cfn-hup Reference:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-helper-scripts-reference.html

NEW QUESTION 3
Your company needs to automate 3 layers of a large cloud deployment. You want to be able to track this depIoyment's evolution as it changes over time, and carefully control any alterations. What is a good way to automate a stack to meet these requirements?

  • A. Use OpsWorks Stacks with three layers to model the layering in your stack.
  • B. Use CloudFormation Nested Stack Templates, with three child stacks to represent the three logicallayers of your cloud.
  • C. Use AWS Config to declare a configuration set that AWS should roll out to your cloud.
  • D. Use Elastic Beanstalk Linked Applications, passing the important DNS entires between layers using the metadata interface.

Answer: B

Explanation: Only CIoudFormation allows source controlled, declarative templates as the basis for stack automation. Nested Stacks help achieve clean separation of layers while simultaneously providing a method to control all layers at once when needed.
Reference:
https://bIogs.aws.amazon.com/application-management/post/TxlT9JYOOS8AB9I/Use-Nested-Stacks-to- Create-Reusable-Templates-and-Support-Role-SpeciaIization

NEW QUESTION 4
What is the scope of an EBS snapshot?

  • A. Availability Zone
  • B. Placement Group
  • C. Region
  • D. VPC

Answer: C

Explanation: An EBS snapshot is tied to its region and can only be used to create volumes in the same region. You can copy a snapshot from one region to another. For more information, see Copying an Amazon EBS Snapshot.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resources.htmI

NEW QUESTION 5
You need to run a very large batch data processing job one time per day. The source data exists entirely in S3, and the output of the processing job should also be written to S3 when finished. If you need to version control this processing job and all setup and teardown logic for the system, what approach should you use?

  • A. Model an AWS EMR job in AWS Elastic Beanstalk.
  • B. Model an AWS EMR job in AWS CloudFormation.
  • C. Model an AWS EMR job in AWS OpsWorks.
  • D. Model an AWS EMR job in AWS CLI Compose

Answer: B

Explanation: To declaratively model build and destroy of a cluster, you need to use AWS CIoudFormation. OpsWorks and Elastic Beanstalk cannot directly model EMR Clusters. The CLI is not declarative, and CLI Composer does not exist.
Reference:
http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/aws-resource-emr-cluster.html

NEW QUESTION 6
When thinking of AWS OpsWorks, which of the following is true?

  • A. Stacks have many layers, layers have many instances.
  • B. Instances have many stacks, stacks have many layers.
  • C. Layers have many stacks, stacks have many instances.
  • D. Layers have many instances, instances have many stack

Answer: A

Explanation: The stack is the core AWS OpsWorks component. It is basically a container for AWS resources—Amazon EC2 instances, Amazon RDS database instances, and so on—that have a common purpose and should
be logically managed together. You define the stack's constituents by adding one or more layers. A layer represents a set of Amazon EC2 instances that serve a particular purpose, such as serving applications or hosting a database server. An instance represents a single computing resource, such as an Amazon EC2 instance.
Reference: http://docs.aws.amazon.com/opsworks/latest/userguide/weIcome.htmI

NEW QUESTION 7
You have a high security requirement for your AWS accounts. What is the most rapid and sophisticated setup you can use to react to AWS API calls to your account?

  • A. Subscription to AWS Config via an SNS Topi
  • B. Use a Lambda Function to perform in-flight analysis and reactMty to changes as they occur.
  • C. Global AWS CIoudTraiI setup delivering to S3 with an SNS subscription to the deliver notifications, pushing into a Lambda, which inserts records into an ELK stack for analysis.
  • D. Use a CIoudWatch Rule ScheduIeExpression to periodically analyze IAM credential log
  • E. Push the deltas for events into an ELK stack and perform ad-hoc analysis there.
  • F. CIoudWatch Events Rules which trigger based on all AWS API calls, submitting all events to an AWS Kinesis Stream for arbitrary downstream analysis.

Answer: D

Explanation: CloudWatch Events allow subscription to AWS API calls, and direction of these events into Kinesis Streams. This allows a unified, near real-time stream for all API calls, which can be analyzed with any tooI(s) of your choosing downstream.
Reference: http://docs.aws.amazon.com/AmazonCIoudWatch/latest/DeveloperGuide/EventTypes.htmI#api_event_ty pe

NEW QUESTION 8
For AWS Auto Scaling, what is the first transition state an existing instance enters after leaving steady state in Standby mode?

  • A. Detaching
  • B. Terminating:Wait
  • C. Pending
  • D. EnteringStandby

Answer: C

Explanation: You can put any instance that is in an InService state into a Standby state. This enables you to remove the instance from service, troubleshoot or make changes to it, and then put it back into service. Instances in a Standby state continue to be managed by the Auto Scaling group. However, they are not an active part of your application until you put them back into service.
Reference: http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/AutoScaIingGroupLifecycIe.html

NEW QUESTION 9
If I want CIoudFormation stack status updates to show up in a continuous delivery system in as close to real time as possible, how should I achieve this?

  • A. Use a long-poll on the Resources object in your CIoudFormation stack and display those state changesin the UI for the system.
  • B. Use a long-poll on the <code>ListStacks</code>API call for your CIoudFormation stack and display those state changes in the UI for the system.
  • C. Subscribe your continuous delivery system to an SNS topic that you also tell your CIoudFormation stack to publish events into.
  • D. Subscribe your continuous delivery system to an SQS queue that you also tell your CIoudFormation stack to publish events into.

Answer: C

Explanation: Use NotificationARNs.member.N when making a CreateStack call to push stack events into SNS in nearly real-time.
Reference:
http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/using-cfn-updating-stacks-monitor-s tack.htmI

NEW QUESTION 10
You need your API backed by DynamoDB to stay online during a total regional AWS failure. You can tolerate a couple minutes of lag or slowness during a large failure event, but the system should recover with normal operation after those few minutes. What is a good approach?

  • A. Set up DynamoDB cross-region replication in a master-standby configuration, with a single standby in another regio
  • B. Create an Auto Scaling Group behind an ELB in each of the two regions DynamoDB is running i
  • C. Add a Route53 Latency DNS Record with DNS Failover, using the ELBs in the two regions as the resource records.
  • D. Set up a DynamoDB MuIti-Region tabl
  • E. Create an Auto Scaling Group behind an ELB in each of the two regions DynamoDB is running i
  • F. Add a Route53 Latency DNS Record with DNS Failover, using the ELBs in the two regions as the resource records.
  • G. Set up a DynamoDB Mu|ti-Region tabl
  • H. Create a cross-region ELB pointing to a cross-region Auto Scaling Group, and direct a Route53 Latency DNS Record with DNS Failover to the cross-region ELB.
  • I. Set up DynamoDB cross-region replication in a master-standby configuration, with a single standby in another regio
  • J. Create a cross-region ELB pointing to a cross-region Auto Scaling Group, and direct a Route53 Latency DNS Record with DNS Failover to the cross-region ELB.

Answer: A

Explanation: There is no such thing as a cross-region ELB, nor such thing as a cross-region Auto Scaling Group, nor such thing as a DynamoDB Multi-Region Table. The only option that makes sense is the cross-regional replication version with two ELBs and ASGs with Route53 Failover and Latency DNS.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.CrossRegionRepI.htmI

NEW QUESTION 11
Which EBS volume type is best for high performance NoSQL cluster deployments?

  • A. iol
  • B. gpl
  • C. standard
  • D. gp2

Answer: A

Explanation: io1 volumes, or Provisioned IOPS (PIOPS) SSDs, are best for: Critical business applications that require sustained IOPS performance, or more than 10,000 IOPS or 160 MiB/s of throughput per volume, like large database workloads, such as MongoDB.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVo|umeTypes.htm|

NEW QUESTION 12
Which deployment method, when using AWS Auto Scaling Groups and Auto Scaling Launch Configurations, enables the shortest time to live for indMdual sewers?

  • A. Pre-baking AMIs with all code and configuration on deploys.
  • B. Using a Dockerfile bootstrap on instance launch.
  • C. Using UserData bootstrapping scripts.
  • D. Using AWS EC2 Run Commands to dynamically SSH into fileet

Answer: A

Explanation: Note that the bootstrapping process can be slower if you have a complex application or multiple applications to install. Managing a fileet of applications with several build tools and dependencies can be a challenging task during rollouts. Furthermore, your deployment service should be designed to do faster rollouts to take advantage of Auto Scaling. Prebaking is a process of embedding a significant portion of your application artifacts within your base AMI. During the deployment process you can customize application installations by using EC2 instance artifacts such as instance tags, instance metadata, and Auto Scaling groups.
Reference: https://d0.awsstatic.com/whitepapers/overview-of-deployment-options-on-aws.pdf

NEW QUESTION 13
Your CTO has asked you to make sure that you know what all users of your AWS account are doing to change resources at all times. She wants a report of who is doing what over time, reported to her once per week, for as broad a resource type group as possible. How should you do this?

  • A. Create a global AWS CIoudTraiI Trai
  • B. Configure a script to aggregate the log data delivered to S3 once per week and deliver this to the CTO.
  • C. Use CIoudWatch Events Rules with an SNS topic subscribed to all AWS API call
  • D. Subscribe the CTO to an email type delivery on this SNS Topic.
  • E. Use AWS IAM credential reports to deliver a CSV of all uses of IAM User Tokens over time to the CTO.
  • F. Use AWS Config with an SNS subscription on a Lambda, and insert these changes over time into a DynamoDB tabl
  • G. Generate reports based on the contents of this table.

Answer: A

Explanation: This is the ideal use case for AWS CIoudTraiI.
CloudTrai| provides visibility into user actMty by recording API calls made on your account. CIoudTraiI records important information about each API call, including the name of the API, the identity of the caller, the time of the API call, the request parameters, and the response elements returned by the AWS service. This information helps you to track changes made to your AWS resources and to troubleshoot operational issues. CIoudTraiI makes it easier to ensure compliance with internal policies and regulatory standards. Reference: https://aws.amazon.com/CloudtraiI/faqs/

NEW QUESTION 14
You need to know when you spend $1000 or more on AWS. What's the easy way for you to see that notification?

  • A. AWS CIoudWatch Events tied to API calls, when certain thresholds are exceeded, publish to SNS.
  • B. Scrape the billing page periodically and pump into Kinesis.
  • C. AWS CIoudWatch Metrics + Billing Alarm + Lambda event subscriptio
  • D. When a threshold is exceeded, email the manager.
  • E. Scrape the billing page periodically and publish to SN

Answer: C

Explanation: Even if you're careful to stay within the free tier, it's a good idea to create a billing alarm to notify you if you exceed the limits of the free tier. Billing alarms can help to protect you against unknowingly accruing charges if you inadvertently use a service outside of the free tier or if traffic exceeds your expectations. Reference: http://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/free-tier-aIarms.htmI

NEW QUESTION 15
Which of these is not an intrinsic function in AWS CIoudFormation?

  • A. Fn::SpIit
  • B. Fn::FindInMap
  • C. Fn::SeIect
  • D. Fn::GetAZs

Answer: A

Explanation: This is the complete list of Intrinsic Functions...: Fn::Base64, Fn::And, Fn::EquaIs, Fn::If, Fn::Not, Fn::Or, Fn::FindInMap, Fn::GetAtt, Fn::GetAZs, Fn::Join, Fn::Se|ect, Ref
Reference:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference.html

NEW QUESTION 16
You need to perform ad-hoc business analytics queries on well-structured data. Data comes in constantly at a high velocity. Your business intelligence team can understand SQL. What AWS service(s) should you look to first?

  • A. Kinesis Firehose + RDS
  • B. Kinesis Firehose + RedShift
  • C. EMR using Hive
  • D. EMR running Apache Spark

Answer: B

Explanation: Kinesis Firehose provides a managed service for aggregating streaming data and inserting it into RedShift. RedShift also supports ad-hoc queries over well-structured data using a SQL-compliant wire protocol, so the business team should be able to adopt this system easily.
Reference: https://aws.amazon.com/kinesis/firehose/detai|s/

NEW QUESTION 17
You have an asynchronous processing application using an Auto Scaling Group and an SQS Queue. The Auto Scaling Group scales according to the depth of the job queue. The completion velocity of the jobs has gone down, the Auto Scaling Group size has maxed out, but the inbound job velocity did not increase. What is a possible issue?

  • A. Some of the newjobs coming in are malformed and unprocessable.
  • B. The routing tables changed and none of the workers can process events anymore.
  • C. Someone changed the IAM Role Policy on the instances in the worker group and broke permissions to access the queue.
  • D. The scaling metric is not functioning correctl

Answer: A

Explanation: The IAM Role must be fine, as if it were broken, NO jobs would be processed since the system would never be able to get any queue messages. The same reasoning applies to the routing table change. The scaling metric is fine, as instance count increased when the queue depth increased due to more messages entering than exiting. Thus, the only reasonable option is that some of the recent messages must be malformed and unprocessable.
Reference:
https://github.com/andrew-templeton/cloudacademy/blob/fca920b45234bbe99cc0e8efb9c65134884dd48 9/questions/null

NEW QUESTION 18
You need to grant a vendor access to your AWS account. They need to be able to read protected messages in a private S3 bucket at their leisure. They also use AWS. What is the best way to accomplish this?

  • A. Create an IAM User with API Access Key
  • B. Grant the User permissions to access the bucke
  • C. Give the vendor the AWS Access Key ID and AWS Secret Access Key for the User.
  • D. Create an EC2 Instance Profile on your accoun
  • E. Grant the associated IAM role full access to the bucke
  • F. Start an EC2 instance with this Profile and give SSH access to the instance to the vendor.
  • G. Create a cross-account IAM Role with permission to access the bucket, and grant permission to use the Role to the vendor AWS account.
  • H. Generate a signed S3 PUT URL and a signed S3 PUT URL, both with wildcard values and 2 year duration
  • I. Pass the URLs to the vendor.

Answer: C

Explanation: When third parties require access to your organization's AWS resources, you can use roles to delegate access to them. For example, a third party might provide a service for managing your AWS resources. With IAM roles, you can grant these third parties access to your AWS resources without sharing your AWS security credentials. Instead, the third party can access your AWS resources by assuming a role that you create in your AWS account.
Reference:
http://docs.aws.amazon.com/IAM/latest/UserGuide/id_roIes_common-scenarios_third-party.html

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