You are looking to migrate your Development (Dev) and Test environments to AWS. You have decided to use separate AWS accounts to host each environment. You plan to link each accounts bill to a Master AWS account using Consolidated Billing. To make sure you keep within budget you would like to implement a way for administrators in the Master account to have access to stop, delete and/or terminate resources in both the Dev and Test accounts.
Identify which option will allow you to achieve this goal.

• A.Create IAM users in the Master account with full Admin permissions. Create cross-account roles in the Dev and Test accounts that grant the Master account access to the resources in the account by inheriting permissions from the Master account.
• B.Create IAM users and a cross-account role in the Master account that grants full Admin permissions to the Dev and Test accounts.
• C.Create IAM users in the Master account. Create cross-account roles in the Dev and Test accounts that have full Admin permissions and grant the Master account access.
• D.Link the accounts using Consolidated Billing. This will give IAM users in the Master account access to resources in the Dev and Test accounts

Correct Answer: C

Bucket Owner Granting Cross-account Permission to objects It Does Not Own In this example scenario, you own a bucket and you have enabled other AWS accounts to upload objects.
That is, your bucket can have objects that other AWS accounts own.
Now, suppose as a bucket owner, you need to grant cross-account permission on objects, regardless of who the owner is, to a user in another account. For example, that user could be a billing application that needs to access object metadata. There are two core issues:
The bucket owner has no permissions on those objects created by other AWS accounts. So for the bucket owner to grant permissions on objects it does not own, the object owner, the AWS account that created the objects, must first grant permission to the bucket owner. The bucket owner can then delegate those permissions.
Bucket owner account can delegate permissions to users in its own account but it cannot delegate permissions to other AWS accounts, because cross-account delegation is not supported.
In this scenario, the bucket owner can create an AWS Identity and Access Management (IAM) role with permission to access objects, and grant another AWS account permission to assume the role temporarily enabling it to access objects in the bucket.
Background: Cross-Account Permissions and Using IAM Roles
IAM roles enable several scenarios to delegate access to your resources, and cross-account access is one of the key scenarios. In this example, the bucket owner, Account A, uses an IAM role to temporarily delegate object access cross-account to users in another AWS account, Account C. Each IAM role you create has two policies attached to it:
A trust policy identifying another AWS account that can assume the role.
An access policy defining what permissions-for example, s3:GetObject-are allowed when someone assumes the role. For a list of permissions you can specify in a policy, see Specifying Permissions in a Policy.
The AWS account identified in the trust policy then grants its user permission to assume the role. The user can then do the following to access objects:
Assume the role and, in response, get temporary security credentials.
Using the temporary security credentials, access the objects in the bucket.
For more information about IAM roles, go to Roles (Delegation and Federation) in IAM User Guide.
The following is a summary of the walkthrough steps:

Account A administrator user attaches a bucket policy granting Account B conditional permission to upload objects.
Account A administrator creates an IAM role, establishing trust with Account C, so users in that account can access Account A. The access policy attached to the role limits what user in Account C can do when the user accesses Account A.
Account B administrator uploads an object to the bucket owned by Account A, granting full-control permission to the bucket owner.
Account C administrator creates a user and attaches a user policy that allows the user to assume the role.
User in Account C first assumes the role, which returns the user temporary security credentials. Using those temporary credentials, the user then accesses objects in the bucket.
For this example, you need three accounts. The following table shows how we refer to these accounts and the administrator users in these accounts. Per IAM guidelines (see About Using an Administrator User to Create Resources and Grant Permissions) we do not use the account root credentials in this walkthrough.
Instead, you create an administrator user in each account and use those credentials in creating resources and granting them permissions

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A customer is running two Amazon EC2 instances, Server1 and Server2, in different subnets of the same VPC. Server1 can ping Server2, but Server2 cannot ping Server1.What could explain this behavior? Choose 2 answers

• A.The two servers are not located in the same Availability Zone
• B.The operating system firewall on Server1 is blocking traffic from Server2
• C.The ingress rules for Server2's security group do not allow ICMP traffic
• D.The ingress rules for Server1's security group do not allow ICMP traffic
• E.There is no route from Server2 to Server1 defined in the route table

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Your security team requires each Amazon ECS task to have an IAM policy that limits the task's privileges to only those required for its use of AWS services. How can you achieve this?

• A.Reboot each Amazon ECS task programmatically to generate new instance metadata for each task
• B.Use IAM roles for Amazon ECS tasks to associate a specific IAM role with each ECS task definition
• C.Use IAM roles on the Amazon ECS container instances to associate IAM roles with each ECS task on that instance
• D.Connect to each running Amazon ECS container instance and add discrete credentials

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A team has an application that detects new ejects being uploaded into an Amazon S3 bucket. The uploads trigger a Lambda function to write object metadata into an Amazon DynamoDB table and RDS PostgreSQL database. Which action should the team lake to ensure high availability?

• A.Create a Lambda function for each Availability Zone the application is deployed in.
• B.Enable multi-AZ on the RDS PostgreSQL database
• C.Create a DynamoDB stream for the DynamoDB table
• D.Enable cross-region replication in the Amazon S3 bucket

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In an AWS CloudFormation template, each resource declaration includes:

• A.a logical ID, a resource type, and resource properties
• B.a variable resource name and resource attributes
• C.an IP address and resource entities
• D.a physical ID, a resource file, and resource data

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