(An endpoint is not responding to a request based on the failure threshold provided. What does Route 53 do once it considers the endpoint unhealthy?)
Answer : B
When Amazon Route 53 determines an endpoint is unhealthy based on a failure threshold (e.g., via health checks), it terminates the connection attempt to that endpoint and routes traffic to a healthy alternative, if available. This behavior ensures high availability using routing policies like failover or latency-based routing. The WGU Cloud Deployment and Operations Study Guide (Section 3.1, Route 53 Health Checks) states, 'Route 53 stops routing traffic to an unhealthy endpoint by terminating connection attempts once the health check failure threshold is exceeded, redirecting to a healthy resource.' Options A, C, and D are not direct actions taken by Route 53 in this scenario.
(Which performance optimization method must be used when uploading files larger than 5 GB to S3?)
Answer : A
Multipart uploads must be used when uploading files larger than 5 GB to Amazon S3, as this method splits the file into smaller parts for parallel upload, improving reliability and performance. The WGU Cloud Deployment and Operations Study Guide (Section 2.1, S3 Uploads) states, 'For files exceeding 5 GB, multipart upload is required in S3, allowing the file to be divided into parts (minimum 5 MB each) for concurrent uploads, ensuring efficient and resumable transfers.' Glacier Select, Transfer Acceleration, and Intelligent-Tiering are not designed for this upload optimization.
(Where does Patch Manager send compliance reports?)
Answer : C
Patch Manager in AWS Systems Manager sends compliance reports to an Amazon S3 bucket, where they are stored for auditing and analysis. This allows administrators to track patch compliance status across EC2 instances and on-premises servers. The WGU Cloud Deployment and Operations Study Guide (Section 5.2, Patch Manager) states, 'Patch Manager compliance reports are delivered to an S3 bucket configured as a target, providing a centralized location for reviewing patch status and compliance data.' OpsWorks, EBS, and Route 53 are not used for storing these reports.
(Which service enables a company to enforce and manage governance rules across multiple AWS accounts?)
Answer : A
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.
(A company has implemented multifactor authentication (MFA) for access to its AWS tenant. Which API call is needed to perform MFA before accessing a resource?)
Answer : B
The `GetSessionToken` API call is needed to perform MFA before accessing a resource, as it generates temporary security credentials for an IAM user after MFA validation. This ensures secure access to AWS resources. The WGU Cloud Deployment and Operations Study Guide (Section 6.2, IAM and MFA) states, 'The `GetSessionToken` API is used with MFA to obtain temporary credentials, requiring a valid MFA code to authenticate the user before resource access is granted.' GetCallerIdentity, GetFederationToken, and DecodeAuthorizationMessage serve different purposes and do not handle MFA authentication.
(A company configures the CloudFront caching TTL to the following settings: Min: 0, Max: 172800. An administrator updates the Cache-Control setting to 432000. However, objects are only cached for 48 hours. What is required to ensure objects are cached for up to 120 hours?)
Answer : A
Comprehensive and Detailed Explanation From Exact Extract:
In Amazon CloudFront, the caching TTL is controlled by the minimum and maximum TTL settings, with the maximum TTL (in seconds) capping the cache duration. The current Max TTL is 172800 seconds (48 hours), and the Cache-Control setting of 432000 seconds (120 hours) is ignored because it exceeds the Max TTL. To cache objects for up to 120 hours, the Max setting must be configured to 432000 seconds. The WGU Cloud Deployment and Operations Study Guide (Section 4.4, CloudFront Caching) states, 'The maximum TTL in CloudFront settings (e.g., 172800 seconds) overrides any higher Cache-Control value; to allow 120 hours (432000 seconds), the Max TTL must be set accordingly.' Adjusting Min, expiration, or Cache-Control alone does not resolve this.
(An organization uses CloudFormation to deploy AWS infrastructure. The templates are built in JSON and deploy EC2 instances across multiple regions. Which solution should be used to set values in the template based on region-specific AMI IDs?)
Answer : C
Comprehensive and Detailed Explanation From Exact Extract:
The Mappings section in a CloudFormation template should be used to set values based on region-specific AMI IDs. Mappings allow the template to define a lookup table that associates regions with corresponding AMI IDs, enabling dynamic selection during stack creation across multiple regions. The WGU Cloud Deployment and Operations Study Guide (Section 5.3, CloudFormation Mappings) states, 'The Mappings section enables region-specific configurations, such as mapping AMI IDs to regions (e.g., 'us-east-1': 'ami-123456'), ensuring the correct AMI is used based on the deployment region.' Outputs, WaitCondition, and Resources do not provide this mapping functionality.