SOA-C03 PrüfungGuide, Amazon SOA-C03 Zertifikat - AWS Certified CloudOps Engineer - Associate

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Thema	Einzelheiten
Thema 1	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 2	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 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	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.
Thema 5	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.

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Amazon AWS Certified CloudOps Engineer - Associate SOA-C03 Prüfungsfragen mit Lösungen (Q206-Q211):

206. Frage
A company runs several production workloads on Amazon EC2 instances. A SysOps administrator discovered that a production EC2 instance failed a system health check. The SysOps administrator recovered the instance manually.
The SysOps administrator wants to automate the recovery task of EC2 instances and receive notifications whenever a system health check fails. Detailed monitoring is activated for all of the company's production EC2 instances.
Which of the following is the MOST operationally efficient solution that meets these requirements?

A. On each production EC2 instance, create a script that sends network pings to a highly available endpoint by way of a cron job. If the script detects a network response timeout, invoke a command to reboot the EC2 instance.
B. On each production EC2 instance, configure an Amazon CloudWatch agent to collect and send logs to a log group in Amazon CloudWatch Logs. Create a CloudWatch alarm that is based on a metric filter that tracks errors. Configure the alarm to invoke an AWS Lambda function to reboot the EC2 instance and send a notification email.
C. On each production EC2 instance, create a script that monitors the system health by sending a heartbeat notification every minute to a central monitoring server. If an EC2 instance fails to send a heartbeat, run a script on the monitoring server to stop and start the EC2 instance and to publish a notification to an Amazon Simple Notification Service (Amazon SNS) topic.
D. For each production EC2 instance, create an Amazon CloudWatch alarm for Status Check Failed:
System. Set the alarm action to recover the EC2 instance. Configure the alarm notification to be published to an Amazon Simple Notification Service (Amazon SNS) topic.

Antwort: D

207. Frage
A company manages a set of accounts on AWS by using AWS Organizations. The company's security team wants to use a native AWS service to regularly scan all AWS accounts against the Center for Internet Security (CIS) AWS Foundations Benchmark.
What is the MOST operationally efficient way to meet these requirements?

A. Designate a central security account as the AWS Security Hub administrator account. Create a script that sends an invitation from the Security Hub administrator account and accepts the invitation from the member account. Run the script every time a new account is created. Configure Security Hub to run the CIS AWS Foundations Benchmark scans.
B. Designate an AWS Security Hub administrator account. Configure new accounts in the organization to automatically become member accounts. Enable CIS AWS Foundations Benchmark scans.
C. Run the CIS AWS Foundations Benchmark across all accounts by using Amazon Inspector.
D. Designate a central security account as the Amazon GuardDuty administrator account. Create a script that sends an invitation from the GuardDuty administrator account and accepts the invitation from the member account. Run the script every time a new account is created. Configure GuardDuty to run the CIS AWS Foundations Benchmark scans.

Antwort: B

Begründung:
AWS Security Hub natively supports running the CIS AWS Foundations Benchmark across multiple accounts in an organization. By designating a central administrator account and enabling automatic account enrollment, all current and future member accounts are automatically included in Security Hub compliance checks. This approach eliminates the need for manual scripting or account invitations, providing the most operationally efficient and scalable solution.

208. Frage
A company's application consists of AWS Lambda functions that access an Amazon RDS instance. Occasionally, the application load creates an unexpectedly high volume of database connections. The high volume of connections causes the RDS instance to rapidly exhaust its compute resources, leading to downtime for users.
A CloudOps Administrator must make the application more resilient to increased load without making modifications to the application code.
Which solution will meet these requirements?

A. Use Amazon RDS Proxy with Amazon RDS. Point the application to Amazon RDS Proxy.
B. Use Amazon ElastiCache (Memcached) with Amazon RDS. Point the application to ElastiCache (Memcached).
C. Use Amazon ElastiCache (Redis OSS) with Amazon RDS. Point the application to ElastiCache (Redis OSS).
D. Create a Lambda function with that invokes an Amazon EventBridge rule to scale the RDS instance based on usage.

Antwort: A

Begründung:
Amazon RDS Proxy pools and reuses database connections from Lambda functions, reducing the number of direct connections to the RDS instance during traffic spikes. This helps prevent connection exhaustion and improves application resilience without requiring changes to the application's database logic.

209. Frage
An application uses an Amazon Aurora MySQL DB cluster that includes one Aurora Replica. The application' s read performance degrades when there are more than 200 user connections. The number of user connections is approximately 180 on a consistent basis. Occasionally, the number of user connections increases rapidly to more than 200.
A CloudOps engineer must implement a solution that will scale the application automatically as user demand increases or decreases.
Which solution will meet these requirements?

A. Modify the DB cluster by increasing the Aurora Replica instance size.
B. Migrate to a new Aurora DB cluster that has multiple writer instances. Modify the application's database connection string.
C. Modify the DB cluster by changing to serverless mode whenever the number of user connections exceeds 200.
D. Create an auto scaling policy that has a target value of 195 for the DatabaseConnections metric.

Antwort: D

Begründung:
Aurora Auto Scaling can automatically add or remove Aurora Replicas based on target metrics, including average connections across Aurora Replicas. AWS documentation lists "Average connections of Aurora Replicas" as a target metric when adding an auto scaling policy to an Aurora DB cluster. Because performance degrades above 200 connections and baseline usage is around 180, setting a target near 195 allows scaling to begin before the connection count crosses the problem threshold. Option A is vertical scaling and does not automatically respond to fluctuating demand. Option B is not how Aurora switches between provisioned and serverless modes during spikes. Option C is unnecessary and does not address read scaling with replicas. Therefore, an Aurora auto scaling policy using the database connections metric is correct.

210. Frage
A company wants to use only IPv6 for all its Amazon EC2 instances. The EC2 instances must not be accessible from the internet, but the EC2 instances must be able to access the internet. The company creates a dual-stack VPC and IPv6-only subnets. How should a CloudOps engineer configure the VPC to meet these requirements?

A. Create and attach an internet gateway. Create a custom route table that includes an entry to point all IPv6 traffic to the internet gateway. Attach the custom route table to the IPv6-only subnets.
B. Create and attach an egress-only internet gateway. Create a custom route table that includes an entry to point all IPv6 traffic to the egress-only internet gateway. Attach the custom route table to the IPv6-only subnets.
C. Create and attach an internet gateway and a NAT gateway. Create a custom route table that includes an entry to point all IPv6 traffic to the internet gateway and all IPv4 traffic to the NAT gateway. Attach the custom route table to the IPv6-only subnets.
D. Create and attach a NAT gateway. Create a custom route table that includes an entry to point all IPv6 traffic to the NAT gateway. Attach the custom route table to the IPv6-only subnets.

Antwort: B

Begründung:
An egress-only internet gateway allows IPv6 resources in a VPC to initiate outbound connections to the internet while preventing unsolicited inbound connections from the internet. Routing IPv6 traffic from the IPv6-only subnets to the egress-only internet gateway provides internet access without making the EC2 instances directly reachable from the internet.

211. Frage
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