DVA-C01 Amazon-Web-Services Exam Questions and Free Practice Test

Question 25

Is there a limit to how much throughput you can get out of a single table in DynamoDB?

A. Yes, not more than 1,000 writes/second or 1,000 reads/second

B. No

C. Yes, not more than 10,000 writes/second or 10,000 reads/second

D. No, but If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.

Correct Answer:D
In DynamoDB, you can increase the throughput you have provisioned for your table using UpdateTabIe API or in the AWS Management Console. If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.
Reference: http://aws.amazon.com/dynamodb/

Question 26

Which of the following statements about SQS is true?

A. Messages will be delivered exactly once and messages will be delivered in First in, First out order

B. Messages will be delivered exactly once and message delivery order is indeterminate

C. Messages will be delivered one or more times and messages will be delivered in First in, First out order

D. Messages will be delivered one or more times and message delivery order is indeterminate

Correct Answer:D

Question 27

A user has launched one EC2 instance in the US West region. The user wants to access the RDS instance launched in the US East region from that EC2 instance. How can the user configure the access for that EC2 instance?

A. It is not possible to access RDS of the US East region from the US West region

B. Open the security group of the US West region in the RDS security group’s ingress rule

C. Configure the IP range of the US West region instance as the ingress security rule of RDS

D. Create an IAM role which has access to RDS and launch an instance in the US West region with it

Correct Answer:C
The user cannot authorize an Amazon EC2 security group if it is in a different AWS Region than the RDS DB instance. The user can authorize an IP range or specify an Amazon EC2 security group in the same region that refers to an IP address in another region.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithSecurityGroups.html

Question 28

A user is launching an AWS RDS instance with MySQL. The user wants to enable the Nlulti AZ feature. Which of the below mentioned parameters will not be allowed to configure by RDS?

A. Availability Zone

B. Region

C. DB subnet group

D. Database port

Correct Answer:A
If the user is launching RDS with Multi AZ the user cannot provision the Availability Zone. RDS is launched automatically instead
Reference: https://console.aws.amazon.com/rds/

Question 29

A user is part of a group which has a policy allowing him just read only access to EC2. The user is part of another group which has full access to EC2. What happens when the user tries to launch an instance?

A. It will allow the user to launch the instance

B. It will fail since the user has just read only access

C. It will allow or deny based on the group under which the user has logged into EC2

D. It will not allow the user to add to the conflicting groups

Correct Answer:A
The IAM group policy is always aggregated. In this case, if the user does not have permission for one group, but has permission for another group, he will have full access to EC2. Unless there is specific deny policy, the user will be able to access EC2.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/PoIiciesOverview.htmI

Question 30

Which EC2 API call would you use to retrieve a list of Amazon Machine Images (AMIs)?

A. Descnbelnstances

B. DescribeAMIs

C. Describelmages

D. GetAMIs

E. You cannot retrieve a list of AMIs as there are over 10,000 AMIs

Correct Answer:E

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