AWS-Certified-Developer-Associate Free Practice Test

In regard to DynamoDB, can I modify the index once it is created?

1. A. Yes, if it is a primary hash key index
2. B. Yes, if it is a Global secondary index
3. C. No
4. D. Yes, if it is a local secondary index

Correct Answer: C
Currently, in DynamoDB, an index cannot be modified once it is created. Reference: http://aws.amazon.com/dynamodb/faqs/#security_anchor

An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of indMdual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E". Which table configuration will result in the lowest impact on provisioned throughput for this query?

1. A. Configure the table to have a hash index on the name attribute, and a range index on the office identifier
2. B. Configure the table to have a range index on the name attribute, and a hash index on the office identifier
3. C. Configure a hash index on the name attribute and no range index
4. D. Configure a hash index on the office Identifier attribute and no range index

Correct Answer: B

Which code snippet below returns the URL of a load balanced web site created in CIoudFormation with an AWS::EIasticLoadBaIancing::LoadBaIancer resource name "EIasticLoad BaIancer"?

1. A. "Fn::Join" : [ '‘'‘ . ["http://", {"Fn::GetAtr" : ["EIasticLoadBalancer","DNSName"]}]]
2. B. "Fn::Join" : [ '‘'‘ . ["http://", {"Fn::GetAtr" : ["E|asticLoadBa|ancer","Ur|"]}]]
3. C. "Fn::Join" : [ '‘'‘ . ["http://", {"Ref" : "EIasticLoadBaIancerUr|"}]]
4. D. "Fn::Join" : ["http://", {"Ref" : "EIasticLoadBaIancerDNSName"}]]

Correct Answer: B

How long are the messages kept on an SQS queue by default?

1. A. If a message is not read, it is never deleted
2. B. 2 weeks
3. C. 1 day
4. D. 4 days

Correct Answer: D
The SQS message retention period is configurable and can be set anywhere from 1 minute to 2 weeks. The default is 4 days and once the message retention limit is reached your messages will be automatically deleted. The option for longer message retention provides greater filexibility to allow for longer intervals between message production and consumption.
Reference: https://aws.amazon.com/sqs/faqs/

Company D is running their corporate website on Amazon S3 accessed from http//www.companyd.com. Their marketing team has published new web fonts to a separate S3 bucket accessed by the S3 endpoint https://s3-us-westl.amazonaws.com/cdfonts. While testing the new web fonts, Company D recognized the web fonts are being blocked by the browser. What should Company D do to prevent the web fonts from being blocked by the browser?

1. A. Enable versioning on the cdfonts bucket for each web font
2. B. Create a policy on the cdfonts bucket to enable access to everyone
3. C. Add the Content-NI D5 header to the request for webfonts in the cdfonts bucket from the website
4. D. Configure the cdfonts bucket to allow cross-origin requests by creating a CORS configuration

Correct Answer: D