DVA-C01 Free Practice Test

AutoScaIing is configured with 3 AZs. Each zone has 5 instances running. If AutoScaIing wants to terminate an instance based on the policy action, which instance will it terminate first?

1. A. Terminate the first launched instance
2. B. Randomly select the instance for termination
3. C. Terminate the instance from the AZ which does not have a high AWS load
4. D. Terminate the instance from the AZ which has instances running near to the billing hour

Correct Answer: B
Before Auto Scaling selects an instance to terminate, it first identifies the Availability Zone that has more instances than the other Availability Zones used by the group. If all the Availability Zones have the same number of instances, it identifies a random Availability Zone.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/us-termination-policy.html

In DynamoDB, the default table size is:

1. A. 5 GB
2. B. 1 GB
3. C. 10 GB
4. D. There is no table size

Correct Answer: D
DynamoDB has seamless scalability with no table size limits and unlimited storage, so you shouIdn\'t be worried about managing storage on the host or to provisioning more drive, as your data requirement changes.
Reference: http://aws.amazon.com/dynamodb/

A user wants to configure AutoScaIing which scales up when the CPU utilization is above 70% and scales down when the CPU utilization is below 30%. How can the user configure AutoScaIing for the above mentioned condition?

1. A. Use AutoScaIing with a schedule
2. B. Configure ELB to notify AutoScaIing on load increase or decrease
3. C. Use dynamic AutoScaIing with a policy
4. D. Use AutoScaIing by manually modifying the desired capacity during a condition

Correct Answer: C
The user can configure the AutoScaIing group to automatically scale up and then scale down based on the specified conditions. To configure this, the user must setup policies which will get triggered by the C|oudWatch alarms.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/as-scaIe-based-on-demand.html

What kind of service is provided by AWS DynamoDB?

1. A. Relational Database
2. B. NoSQL Database
3. C. Dynamic Database
4. D. Document Database

Correct Answer: B
DynamoDB is a fast, fully managed NoSQL database service. Reference: http://aws.amazon.com/dynamodb/

How can you secure data at rest on an EBS volume?

1. A. Attach the volume to an instance using EC2\'s SSL interface.
2. B. Write the data randomly instead of sequentially.
3. C. Use an encrypted file system on top of the BBS volume.
4. D. Encrypt the volume using the S3 server-side encryption service.
5. E. Create an IAM policy that restricts read and write access to the volum

Correct Answer: C