AWS-Certified-Developer-Associate Free Practice Test

When using a large Scan operation in DynamoDB, what technique can be used to minimize the impact of a scan on a tabIe's provisioned throughput?

1. A. Set a smaller page size for the scan
2. B. Use parallel scans
3. C. Define a range index on the table
4. D. Prewarm the table by updating all items

Correct Answer: C

True or False: AWS CIoudFormation allows you to create Microsoft Windows stacks.

1. A. False, AWS CIoudFormation does not support Microsoft Windows.
2. B. False, Amazon doesn’t support Microsoft Windows.
3. C. False, you cannot create Windows stacks.
4. D. True

Correct Answer: D
AWS CIoudFormation allows you to create Microsoft Windows stacks based on Amazon EC2 Windows Amazon Machine Images (AMIs) and provides you with the ability to install software, to use remote desktop to access your stack, and to update and configure your stack.
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/cfn-windows-stacks.html

Regarding Amazon SNS, you can send notification messages to mobile devices through any of the following supported push notification services, EXCEPT:

1. A. Google Cloud Messaging for Android (GCM)
2. B. Apple Push Notification Service (APNS)
3. C. Amazon Device Messaging (ADM)
4. D. Microsoft Windows Mobile Messaging (MWMM)

Correct Answer: D
In Amazon SNS, you have the ability to send notification messages directly to apps on mobile devices. Notification messages sent to a mobile endpoint can appear in the mobile app as message alerts, badge updates, or even sound alerts. Microsoft Windows MobiIe Messaging (MWMM) doesn’t exist and is not supported by Amazon SNS.
Reference: http://docs.aws.amazon.com/sns/latest/dg/SNSMobiIePush.htmI

In regard to DynamoDB, can I delete local secondary indexes?

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

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

A user has created a new EBS volume from an existing snapshot. The user mounts the volume on the instance to which it is attached. Which of the below mentioned options is a required step before the user can mount the volume?

1. A. Run a cyclic check on the device for data consistency
2. B. Create the file system of the volume
3. C. Resize the volume as per the original snapshot size
4. D. No step is require
5. E. The user can directly mount the device

Correct Answer: D
When a user is trying to mount a blank EBS volume, it is required that the user first creates a file system within the volume. If the volume is created from an existing snapshot then the user needs not to create a file system on the volume as it will wipe out the existing data.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.htmI