WGU Cloud-Deployment-and-Operations Exam With Confidence Using Practice Dumps

The weighted routing policy in Amazon Route 53 allows the company to distribute traffic with specific percentages, such as 75% to AWS and 25% to the on-premises infrastructure, by assigning weights to each resource record. This enables load balancing across hybrid environments. The WGU Cloud Deployment and Operations Study Guide (Section 3.1, Route 53 Routing Policies) states, "Weighted routing policy assigns weights to resource record sets (e.g., 75 for AWS, 25 for on-premises), controlling the percentage of traffic directed to each endpoint." Geolocation, failover, and simple policies do not support percentage-based traffic splitting.

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.

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The Reachability Analyzer in AWS VPC should be used to troubleshoot connectivity issues from on-premises computers to EC2 instances, especially when a network security group (NSG) is suspected. It analyzes the network path and identifies blocked traffic due to NSG rules or route tables. The WGU Cloud Deployment and Operations Study Guide (Section 3.2, VPC Troubleshooting) states, "Reachability Analyzer helps diagnose connectivity issues by simulating traffic paths, identifying if an NSG rule (e.g., blocked port) or route table is causing the problem from on-premises to EC2 public IPs." Flow Logs provide data but not analysis, PrivateLink is for private connections, and Traffic Mirroring is for monitoring.