Cloud Deployment and Operations Exam Preparation Material | WGUCloud Deployment and Operations

Explanation:
The `NetworkIn` metric in Amazon CloudWatch should be used to determine the number of bytes received by an EC2 instance across all network interfaces, aiding in proper instance sizing based on inbound traffic. The WGU Cloud Deployment and Operations Study Guide (Section 4.1, CloudWatch Metrics) states, "The `NetworkIn` metric measures the total number of bytes received on all network interfaces of an EC2 instance, providing critical data for sizing decisions to handle inbound traffic effectively." NetworkPacketsIn, NetworkOut, and NetworkPacketsOut measure packet counts or outbound data, which are less relevant for this purpose.

Explanation:
AWS Control Tower enables a company to enforce and manage governance rules across multiple AWS accounts by setting up a landing zone with preconfigured policies for security, compliance, and operations. It simplifies multi-account management. The WGU Cloud Deployment and Operations Study Guide (Section 6.5, Control Tower) states, "Control Tower provides a centralized solution to establish and enforce governance rules across multiple accounts, using guardrails and a landing zone to ensure compliance with organizational policies." Security Hub, GuardDuty, and Systems Manager do not offer this multi-account governance capability.

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
To make the EC2 instance accessible via a public DNS hostname like ec2-public-54.18.127.233.us-west-2.compute.amazonaws.com, the administrator must set the VPC attribute enableDnsHostnames to true. This enables the automatic assignment of public DNS hostnames to instances with public IP addresses in the VPC. The WGU Cloud Deployment and Operations Study Guide (Section 3.2, VPC Configuration) states, "Setting enableDnsHostnames to true in the VPC configuration ensures that EC2 instances with public IPs receive a public DNS hostname (e.g., ec2-public-<ip>.<region>.compute.amazonaws.com), facilitating internet accessibility." Resource tags, disabling DNS support, and resource-based names do not enable this functionality.</region></ip>

Explanation:
Amazon EventBridge should be used to configure email notifications for a trigger by Amazon Made, as it can route events to targets like Amazon SNS (Simple Notification Service) for email delivery. EventBridge integrates with AWS services to handle event-driven notifications. The WGU Cloud Deployment and Operations Study Guide (Section 4.3, EventBridge) states, "EventBridge can be configured to send events from Amazon Made to SNS, enabling email notifications by subscribing an email endpoint to the SNS topic." SQS, EKS, and CodeDeploy do not support this notification configuration.

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The CloudFormation template feature should be used to specify the AWS resources to be provisioned. A template is a JSON or YAML file that defines the resources (e.g., EC2 instances, S3 buckets) and their configurations for deployment. The WGU Cloud Deployment and Operations Study Guide (Section 5.3, CloudFormation Templates) states, "The template is the core component of CloudFormation, containing the resource specifications and properties that are provisioned when a stack is created." Change sets, exports, and stack sets serve different purposes (e.g., previewing changes, sharing outputs, managing multiple stacks).