When thinking of AWS Elastic Beanstalk, which statement is true?

messages in the worker environment. The daemon pulls data off the Amazon SQS queue, inserts it into the message body of an HTTP POST request, and sends it to a user-configurable URL path on the local host. The content type for the message body within an HTTP POST request is application/json by default. http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features-managing-env-tiers.html

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

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. http://docs.aws.amazon.com/opsworks/latest/userguide/welcome.html

What is true of the way that encryption works with EBS?
snapshots are also automatically encrypted. Your encrypted volumes and any associated snapshots always remain protected. For more information, see Amazon EBS Encryption. http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSEncryption.html

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?

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-emr-cluster.html

What is a circular dependency in AWS CloudFormation?

the correct order. For example, if you create an Elastic IP and a VPC with an Internet gateway in the same stack, the http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/troubleshooting.html#troubleshooting-errors- dependence-error

Which of the following tools does not directly support AWS OpsWorks, for monitoring your stacks?

metrics with detailed monitoring for each instance in the stack; AWS OpsWorks integrates with AWS CloudTrail to log every AWS OpsWorks API call and store the data in an Amazon S3 bucket; You can use Amazon CloudWatch Logs to monitor your stack’s system, application, and custom logs. http://docs.aws.amazon.com/opsworks/latest/userguide/monitoring.html

There is a very serious outage at AWS. EC2 is not affected, but your EC2 instance deployment scripts stopped working in the region with the outage. What might be the issue?

snapshots (backup copies) of the data volumes. You can use snapshots for recovering data quickly and reliably in case of application or system failures. You can also use snapshots as a baseline to create multiple new data volumes, expand the size of an existing data volume, or move data volumes across multiple Availability Zones, thereby making your data usage highly scalable. For more information about using data volumes and snapshots, see Amazon Elastic Block Store. http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonS3.html

Your company wants to understand where cost is coming from in the company’s production AWS account. There are a number of applications and services running at any given time. Without expending too much initial development time, how best can you give the business a good understanding of which applications cost the most per month to operate?

robust way to track expenses. You can also use tags to filter views in Cost Explorer. Note that before you can filter views by tags in Cost Explorer, you must have applied tags to your resources and activate them, as described in the following sections. For more information about Cost Explorer, see Analyzing Your Costs with Cost Explorer. http://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/cost-alloc-tags.html

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?

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. https://github.com/andrew- templeton/cloudacademy/blob/fca920b45234bbe99cc0e8efb9c65134884dd489/questions/null

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?

and ASGs with Route53 Failover and Latency DNS. http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.CrossRegionRepl.html