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Amazon SOA-C03 Prüfungsplan:

Thema	Einzelheiten
Thema 1	Reliability and Business Continuity: This section measures the skills of System Administrators and focuses on maintaining scalability, elasticity, and fault tolerance. It includes configuring load balancing, auto scaling, Multi-AZ deployments, implementing backup and restore strategies with AWS Backup and versioning, and ensuring disaster recovery to meet RTO and RPO goals.
Thema 2	Security and Compliance: This section measures skills of Security Engineers and includes implementing IAM policies, roles, MFA, and access controls. It focuses on troubleshooting access issues, enforcing compliance, securing data at rest and in transit using AWS KMS and ACM, protecting secrets, and applying findings from Security Hub, GuardDuty, and Inspector.
Thema 3	Networking and Content Delivery: This section measures skills of Cloud Network Engineers and focuses on VPC configuration, subnets, routing, network ACLs, and gateways. It includes optimizing network cost and performance, configuring DNS with Route 53, using CloudFront and Global Accelerator for content delivery, and troubleshooting network and hybrid connectivity using logs and monitoring tools.
Thema 4	Monitoring, Logging, Analysis, Remediation, and Performance Optimization: This section of the exam measures skills of CloudOps Engineers and covers implementing AWS monitoring tools such as CloudWatch, CloudTrail, and Prometheus. It evaluates configuring alarms, dashboards, and notifications, analyzing performance metrics, troubleshooting issues using EventBridge and Systems Manager, and applying strategies to optimize compute, storage, and database performance.
Thema 5	Deployment, Provisioning, and Automation: This section measures the skills of Cloud Engineers and covers provisioning and maintaining cloud resources using AWS CloudFormation, CDK, and third-party tools. It evaluates automation of deployments, remediation of resource issues, and managing infrastructure using Systems Manager and event-driven processes like Lambda or S3 notifications.

>> SOA-C03 Prüfungsvorbereitung <<

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Amazon AWS Certified CloudOps Engineer - Associate SOA-C03 Prüfungsfragen mit Lösungen (Q287-Q292):

287. Frage
A company's ecommerce application is running on Amazon EC2 instances that are behind an Application Load Balancer (ALB). The instances are in an Auto Scaling group. Customers report that the website is occasionally down. When the website is down, the website returns an HTTP
500 (server error) status message to customer browsers.
The Auto Scaling group's health check is configured for EC2 status checks, and the instances are healthy.
Which solution will resolve the problem?

A. Install the Amazon CloudWatch agent on all the instances. Configure the agent to reboot the instances.
B. Add Elastic Load Balancing (ELB) health checks to the Auto Scaling group.
C. Replace the ALB with a Network Load Balancer.
D. Update the target group configuration on the ALB. Enable session affinity (sticky sessions).

Antwort: B

Begründung:
Adding Elastic Load Balancing health checks to the Auto Scaling group allows instance health to be determined by the ALB target health in addition to EC2 status checks. If an instance is running but the application is returning server errors and fails the ALB health check, Auto Scaling can mark the instance unhealthy and replace it automatically.

288. Frage
A CloudOps engineer needs to build an event infrastructure for a set of custom application- specific events. The events must be sent to an AWS Lambda function for processing. The CloudOps engineer must record the events to replay later by event type or event time.
Which solution will meet these requirements?

A. Create an archive on the Amazon EventBridge default event bus. Create an EventBridge pipe to ingest the custom events and to save the custom events in the archive. Create a rule to send the custom events to the Lambda function.
B. Create a log group in Amazon CloudWatch Logs. Create an Amazon EventBridge rule to send the custom events to the Lambda function and to the log group.
C. Create an archive on the Amazon EventBridge default event bus. Use pattern matching to record the custom events. Create a rule to send the custom events to the Lambda function.
D. Create an Amazon EventBridge custom event bus. Create an archive on the custom event bus.
Create a rule to send the custom events to the Lambda function.

Antwort: D

Begründung:
A custom EventBridge event bus is the correct choice for handling application-specific events.
You can define an archive on that custom event bus to record and later replay events by event type or timestamp. Creating an EventBridge rule to send events to a Lambda function ensures real-time processing while maintaining full replay capability, making this the most flexible and operationally efficient solution.

289. Frage
An ecommerce company uses Amazon ElastiCache (Redis OSS) for caching product queries. The CloudOps engineer observes a large number of cache evictions in Amazon CloudWatch metrics and needs to reduce evictions while retaining popular data in cache.
Which solution meets these requirements with the least operational overhead?

A. Decrease the ElastiCache TTL value.
B. Add another node to the ElastiCache cluster.
C. Migrate to a new ElastiCache cluster with larger nodes.
D. Increase the ElastiCache TTL value.

Antwort: C

Begründung:
According to the AWS Cloud Operations and ElastiCache documentation, cache evictions occur when the cache runs out of memory and must remove items to make space for new data.
To reduce evictions and retain frequently accessed items, AWS recommends increasing the total available memory - either by scaling up to larger node types or scaling out by adding shards/nodes. Migrating to a cluster with larger nodes is the simplest and most efficient solution because it immediately expands capacity without architectural changes.
Adjusting TTL (Options B and C) controls expiration timing, not memory allocation. Adding a single node (Option A) may help, but redistributing data requires resharding, introducing more complexity.
Thus, Option D provides the lowest operational overhead and ensures high cache hit rates by increasing total cache memory.

290. Frage
A company is migrating its production file server to AWS. All data stored on the file server must remain accessible if an Availability Zone becomes unavailable or during system maintenance. Users must access the file server through the SMB protocol and manage permissions by using Windows ACLs.
Which solution will meet these requirements?

A. Deploy two Amazon FSx for Windows File Server Single-AZ file systems and configure DFS Replication.
B. Create an Amazon FSx for Windows File Server Multi-AZ file system.
C. Deploy two AWS Storage Gateway file gateways in two Availability Zones behind an Application Load Balancer.
D. Create a single AWS Storage Gateway file gateway.

Antwort: B

Begründung:
Amazon FSx for Windows File Server is a fully managed native Windows file system that supports SMB, Windows authentication, and Windows ACLs. The Multi-AZ deployment option automatically replicates data synchronously across Availability Zones and provides automatic failover with minimal downtime.
This architecture ensures continuous availability during AZ failures or maintenance events without manual intervention. Users experience consistent access and permissions through SMB, fully meeting the stated requirements.
Storage Gateway introduces on-premises dependencies. DFS Replication increases complexity and recovery time. Therefore, FSx for Windows Multi-AZ is the correct solution.

291. Frage
A developer uses an Amazon Linux Amazon Machine Image (AMI) to launch an EC2 instance that hosts a third-party application. The application occasionally becomes unstable. The CloudOps engineer needs a solution to automatically reboot the EC2 instance whenever utilization is above 90% for 15 minutes and to notify the developer about the reboot.
Which solution will meet these requirements with the LEAST administrative effort?

A. Create an Amazon CloudWatch alarm that evaluates the CPU utilization of the instance.
Configure the alarm to publish a notification to an Amazon Simple Notification Service (Amazon SNS) topic and to perform an EC2 action to reboot the instance. Subscribe the developer to the SNS topic.
B. Create an AWS Systems Manager runbook script to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic and to reboot the EC2 instance. Subscribe the developer to the SNS topic. Configure an Amazon CloudWatch alarm to run the Systems Manager runbook when CPU utilization for the instance remains above 90% for more than 15 minutes.
C. Create an Amazon CloudWatch alarm that evaluates the CPU utilization of the instance Configure the alarm to invoke an AWS Systems Manager action to create an incident to notify the developer and request the reboot.
D. Configure an Amazon CloudWatch alarm that evaluates the CPU utilization of the instance.
Configure the alarm to invoke an AWS Lambda function to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic when the CloudWatch alarm activates. Configure the Lambda function to reboot the EC2 instance. Subscribe the developer to the SNS topic.

Antwort: A

Begründung:
A CloudWatch alarm can directly trigger two actions when the threshold is breached:
- EC2 action to reboot the instance.
- SNS notification to alert the developer.
This requires no Lambda or Systems Manager runbooks and is therefore the simplest and least administrative option that fully meets the requirements (CPU > 90% for 15 minutes, automatic reboot, and notification).

292. Frage
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