AWS-Certified-Developer-Associate Free Practice Test

A user has created a blank EBS volume in the US-East-1 region. The user is unable to attach the volume to a running instance in the same region. What could be the possible reason for this?

1. A. The instance must be in a running stat
2. B. It is required to stop the instance to attach volume
3. C. The AZ for the instance and volume are different
4. D. The instance is from an instance store backed AMI
5. E. The instance has enabled the volume attach protection

Correct Answer: B
An EBS volume provides persistent data storage. The user can attach a volume to any instance provided they are both in the same AZ. Even if they are in the same region but in a different AZ, it will not be able to attach the volume to that instance.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.htmI

What is the data model of DynamoDB?

1. A. "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
2. B. "Database", which is a set of "TabIes", which is a set of "Items", which is a set of "Attributes".
3. C. "TabIe", a collection of Items; "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
4. D. "Database", a collection of Tables; "TabIes", with Keys and one or more Attribute; and "Attribute", with Name and Value.

Correct Answer: C
The data model of DynamoDB is: "TabIe", a collection of Items;
"Items", with Keys and one or more Attribute; "Attribute", with Name and Value.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModeI.html

An orgAMzation has 10000 employees. The orgAMzation wants to give restricted AWS access to each employee. How can the orgAMzation achieve this?

1. A. Create an IAM user for each employee and make them a part of the group
2. B. It is not recommended to support 10000 users with IAM
3. C. Use STS and create the users’ run time
4. D. Use Identity federation with SSO

Correct Answer: D
Identity federation enables users from an existing directory to access resources within your AWS account,
making it easier to manage your users by maintaining their identities in a single place. In this case, the federated user is the only solution since AWS does not allow creating more than 5000 IAM users. Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.html

How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?

1. A. Query the appropriate Amazon CIoudWatch metric.
2. B. Use ipconfig or ifconfig command.
3. C. Query the local instance userdata.
4. D. Query the local instance metadat

Correct Answer: D

You cannot access your AWS console, so you revert to using the CLI that you are not familiar with. Which of the following commands is not a valid CLI command for EC2 instances?

1. A. ec2-allocate-address
2. B. ec2-attach-internet-gateway
3. C. ec2-associate-route-table
4. D. ec2-allocate-interface

Correct Answer: D
You can use the CLI tools to manage your Amazon EC2 resources (such as instances, security groups, and volumes) and your Amazon VPC resources (such as VPCs, subnets, route tables, and Internet gateways). Before you can start using the tools, you must download and configure them.
The following are valid CLI commands for EC2 instances: ec2-accept-vpc-peering-connection
ec2-allocate-address
ec2-assign-private-ip-addresses ec2-associate-address
ec2-associate-dhcp-options ec2-associate-route-table
ec2-attach-internet-gateway
ec2-attach-network-interface (not ec2-allocate-interface) Reference:
http://docs.aws.amazon.com/AWSEC2/latest/CommandLineReference/command-reference.html