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Amazon SOA-C03 Prüfungsplan:

Thema	Einzelheiten
Thema 1	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 2	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 3	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 4	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 5	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.

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SOA-C03 Testantworten, SOA-C03 Fragen Beantworten

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Amazon AWS Certified CloudOps Engineer - Associate SOA-C03 Prüfungsfragen mit Lösungen (Q50-Q55):

50. Frage
A CloudOps engineer must create an IAM policy for a developer who needs access to specific AWS services. Based on the requirements, the CloudOps engineer creates the following policy:

Which actions does this policy allow? (Choose two.)

A. Create an IAM role for an AWS Lambda function.
B. Describe AWS load balancers.
C. Create an AWS Storage Gateway.
D. Invoke an AWS Lambda function.
E. Delete an Amazon SQS queue.

Antwort: B,D

Begründung:
The policy allows all Elastic Load Balancing actions, so describing load balancers is permitted. It also allows all Lambda actions, so invoking a Lambda function is permitted.

51. Frage
A company operates compute resources in a VPC and in the company's on-premises data center. The company already has an AWS Direct Connect connection between the VPC and the on-premises data center. A CloudOps engineer needs to ensure that Amazon EC2 instances in the VPC can resolve DNS names for hosts in the on-premises data center.
Which solution will meet this requirement with the LEAST amount of ongoing maintenance?

A. Create an Amazon Route 53 Resolver outbound endpoint. Add the IP addresses of an on- premises DNS server for the domain names that need to be forwarded.
B. Create an Amazon Route 53 private hosted zone. Populate the zone with the hostnames and IP addresses of the hosts in the on-premises data center.
C. Add the hostnames and IP addresses for the on-premises hosts to the /etc/hosts file of each EC2 instance.
D. Set up a forwarding rule for reverse DNS queries in Amazon Route 53 Resolver. Set the enableDnsHostnames attribute to true for the VPC.

Antwort: A

Begründung:
The Route 53 Resolver outbound endpoint enables DNS queries from resources in a VPC to be forwarded to on-premises DNS servers over an existing AWS Direct Connect or VPN connection.
By creating forwarding rules that specify which domains should be resolved through the on- premises DNS servers, EC2 instances in the VPC can seamlessly resolve internal hostnames without manual configuration or ongoing maintenance. This is the most scalable and low- maintenance solution.

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

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.

53. Frage
A CloudOps engineer created a VPC with a private subnet, a security group allowing all outbound traffic, and an endpoint for EC2 Instance Connect in the private subnet. The EC2 instance was launched without an SSH key pair, using the same subnet and security group. However, the engineer cannot connect via EC2 Instance Connect endpoint.
How can the CloudOps engineer connect to the instance?

A. Create an IAM instance profile that allows AWS Systems Manager Session Manager to access the EC2 instance. Associate the instance profile with the instance.
B. Create an inbound rule in the security group to allow SSH traffic on port 22 from the private subnet.
C. Create an inbound rule in the security group to allow HTTPS traffic on port 443 from the private subnet.
D. Recreate the EC2 instance. Associate an SSH key pair with the instance.

Antwort: A

Begründung:
According to the AWS Cloud Operations and EC2 Connectivity documentation, EC2 Instance Connect Endpoint allows access to instances without internet exposure or open SSH ports. However, for successful connectivity, the EC2 instance must have Systems Manager permissions through an IAM instance profile.
If no IAM instance profile is attached, the instance cannot establish a control channel with the Systems Manager service, and EC2 Instance Connect cannot authenticate the session.
Opening port 22 (Option B) is unnecessary and contradicts the private subnet design. HTTPS rules (Option A) are irrelevant because EC2 Instance Connect communicates through AWS APIs, not direct HTTPS connections. Recreating the instance with a key pair (Option D) bypasses the intended keyless connection mechanism.
Therefore, Option C - attaching an IAM instance profile with Systems Manager permissions - enables secure, private access through EC2 Instance Connect Endpoint.

54. Frage
A company wants to use AWS Systems Manager to manage a large fleet of Amazon EC2 instances. The company hosts the instances in private subnets. The company follows the principle of least privilege to assign access permissions. All private subnets have internet connectivity through a NAT gateway.
A CloudOps engineer installs the latest version of the Systems Manager Agent (SSM Agent).
However, the EC2 instances do not appear in Systems Manager Fleet Manager. The CloudOps engineer must resolve this issue.
Which solution will meet this requirement?

A. Create a VPC endpoint for Systems Manager. Remove routes to the internet through the NAT gateway from the private subnet's route table.
B. Attach a custom policy that allows all actions to ssm* to the EC2 instance profile that is associated with the instances.
C. Attach the AmazonSSMManagedInstanceCore AWS managed policy to the EC2 instance profile that is associated with the instances.
D. Replace the NAT gateway with a NAT instance that is deployed in the public subnet. Update the private subnet's route table to use the NAT instance.

Antwort: C

Begründung:
For EC2 instances to register and appear in AWS Systems Manager (Fleet Manager, Run Command, Patch Manager, etc.), the instance's IAM instance profile must have the correct permissions. The recommended least-privilege policy is AmazonSSMManagedInstanceCore, which grants SSM Agent the necessary access to Systems Manager, AWS Identity and Access Management, and (optionally) CloudWatch Logs. Without this policy, the agent cannot register the instance, even if network connectivity through a NAT gateway is present.

55. Frage
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