(What is a patch baseline attached to if it is not defined in Patch Manager?)
If a patch baseline is not explicitly defined in Patch Manager, it is attached to the default patch group. This default group applies a preconfigured baseline with AWS-recommended patches, ensuring basic compliance for instances without custom baselines. The WGU Cloud Deployment and Operations Study Guide (Section 5.2, Patch Manager) states, 'If no custom patch baseline is defined, instances are associated with the default patch group, which uses AWS-provided baseline settings for automatic patch approval.' Options A, C, and D are not valid attachments for patch baselines.
(Which type of support plan provides a technical account manager and full use of Trusted Advisor?)
The Enterprise support plan provides a technical account manager (TAM) and full use of Trusted Advisor, offering proactive guidance and comprehensive access to all checks. This plan is designed for large-scale, mission-critical workloads. The WGU Cloud Deployment and Operations Study Guide (Section 6.4, AWS Support Plans) states, 'The Enterprise support plan includes a dedicated Technical Account Manager and full Trusted Advisor access, providing 24/7 support and proactive optimization recommendations.' Developer, Standard, and Business plans offer limited or no TAM support and partial Trusted Advisor access.
(Which two solutions should an administrator use to receive emails when a Lambda function returns an error? Choose 2 answers.)
To receive emails when a Lambda function returns an error, the administrator should use Amazon CloudWatch to monitor the function's logs and metrics (e.g., errors) and Amazon Simple Notification Service (SNS) to send email notifications based on CloudWatch alarms. The WGU Cloud Deployment and Operations Study Guide (Section 4.3, CloudWatch and SNS) states, 'CloudWatch can detect Lambda errors via logs and trigger an alarm, which integrates with SNS to send email notifications to subscribed endpoints, ensuring timely error alerts.' SQS and CloudTrail are not designed for this notification workflow.
(How are custom metrics grouped in CloudWatch?)
In Amazon CloudWatch, custom metrics are organized and grouped using namespaces. A namespace is a container for CloudWatch metrics that allows you to isolate and categorize metrics from different applications or services. According to the WGU Cloud Deployment and Operations Study Guide (Section 4.1, CloudWatch Metrics), each custom metric must be assigned to a namespace, which acts as a unique identifier to prevent naming collisions and facilitate metric management. Options like Service, Date, and Value are not used for grouping metrics in this context.
(An administrator successfully accesses an EC2 instance via SSH from a local computer then stops it and starts it. Following the restart, the EC2 instance is no longer accessible. Which solution should be used to resolve the issue?)
Comprehensive and Detailed Explanation From Exact Extract:
After stopping and starting an EC2 instance, the public IP address may change (unless an Elastic IP is attached), but the security group rules remain intact. If the instance is no longer accessible via SSH, it's likely due to an inbound rule (e.g., for port 22) not being correctly configured or applied. Adding or verifying a rule in the security group associated with the network interface (NIC) to allow SSH (port 22) from the administrator's IP resolves this. The WGU Cloud Deployment and Operations Study Guide (Section 3.2, Security Groups) states, 'Stopping and starting an EC2 instance may require verifying or adding an inbound SSH rule (port 22) in the security group if connectivity is lost due to IP or rule misconfiguration.' Route table or IP changes are not the primary issue here.
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