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| Section | Weight | Objectives |
|---|---|---|
| Deployment, Provisioning, and Automation | 18% | - Infrastructure as Code using AWS CloudFormation - Configuration management and orchestration tools - Automated deployment pipelines |
| Security and Compliance | 18% | - Security monitoring and auditing - Data protection and encryption - Identity and access management (IAM) |
| Monitoring, Logging, and Remediation | 20% | - Metrics and monitoring using Amazon CloudWatch - Centralized logging and log analysis with AWS services - Automated remediation and operational workflows |
| Cost and Performance Optimization | 28% | - Right-sizing and capacity planning - Resource performance tuning - Cost monitoring and optimization strategies |
| Reliability and Business Continuity | 16% | - High availability and fault tolerance design - Backup and disaster recovery strategies - Data replication and recovery mechanisms |
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227. Frage
A company runs an application on Amazon EC2 instances that are in an Amazon EC2 Auto Scaling group. Scale-out actions take a long time to become complete because of long-running boot scripts. A CloudOps engineer must implement a solution to reduce the required time for scale-out actions without overprovisioning the Auto Scaling group.
Which solution will meet these requirements?
Antwort: D
Begründung:
An Auto Scaling warm pool keeps a set of pre-initialized EC2 instances in a "stopped" or
"running" state, ready to be quickly added to the active instance pool when scaling out. This significantly reduces scale-out latency caused by lengthy boot scripts, without permanently running extra instances (avoiding overprovisioning). Once demand increases, instances from the warm pool can be launched almost instantly.
228. Frage
A company has an AWS Lambda function in Account A. The Lambda function needs to read the objects in an Amazon S3 bucket in Account B. A CloudOps engineer must create corresponding IAM roles in both accounts. Which solution will meet these requirements?
Antwort: A
Begründung:
For cross-account access, the Lambda function in Account A needs an execution role that permits it to call sts:AssumeRole on a role in Account B. The role in Account B must trust the Lambda execution role from Account A and must have permissions to read the target S3 bucket objects. This follows the standard AWS cross-account access model: the resource-owning account creates a role with permissions to the resource, and the external workload assumes that role. Option B is incomplete because permissions granted only in Account A do not automatically grant access to resources in Account B. Options C and D reverse the trust relationship incorrectly. The secure CloudOps model is cross-account role assumption with least privilege:
Lambda execution role in Account A assumes a read-only S3 access role in Account B.
229. Frage
A company runs a retail website on multiple Amazon EC2 instances behind an Application Load Balancer (ALB). The company must secure traffic to the website over an HTTPS connection.
Which combination of actions should a SysOps administrator take to meet these requirements? (Select TWO.)
Antwort: C,D
Begründung:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Documents:
To secure inbound web traffic over HTTPS when using an Application Load Balancer, AWS CloudOps best practices recommend terminating TLS at the load balancer. This is achieved by attaching an SSL/TLS certificate directly to the ALB listener. Therefore, option B is required. By terminating HTTPS at the ALB, traffic between clients and the load balancer is encrypted, and the ALB can then forward traffic to backend EC2 instances using HTTP or HTTPS based on design requirements.
The certificate used for a public-facing retail website must be trusted by internet browsers. AWS Certificate Manager (ACM) public certificates are specifically designed for this purpose and are trusted by common browsers and operating systems. Therefore, option D is required. ACM manages certificate provisioning, renewal, and deployment automatically, which significantly reduces operational overhead.
Option A is incorrect because attaching certificates to each EC2 instance is unnecessary and does not scale well. Option C is incorrect because private certificates are intended for internal use cases and are not trusted by public browsers. Option E is incorrect because ACM-managed public certificates cannot be exported; they must be attached directly to supported AWS services such as ALBs.
This approach aligns with AWS CloudOps guidance for secure, scalable, and highly available HTTPS architectures.
References:
Elastic Load Balancing User Guide - HTTPS listeners for Application Load Balancers AWS Certificate Manager User Guide - Public certificates AWS SysOps Administrator Study Guide - Securing applications with ALB and ACM
230. Frage
A company is managing a website with a global user base hosted on Amazon EC2 with an Application Load Balancer (ALB). To reduce the load on the web servers, a CloudOps engineer configures an Amazon CloudFront distribution with the ALB as the origin. After a week of monitoring the solution, the CloudOps engineer notices that requests are still being served by the ALB and there is no change in the web server load. What are possible causes for this problem?
(Choose two.)
Antwort: B,E
Begründung:
Client traffic must resolve to the CloudFront distribution for CloudFront to serve cached responses and reduce origin load. If DNS still points directly to the Application Load Balancer, requests bypass CloudFront and continue reaching the ALB and web servers. Also, when the CloudFront cache TTL values are set to 0 seconds, CloudFront does not retain cached objects, so requests are forwarded to the ALB origin instead of being served from edge caches.
231. Frage
A company uses Amazon ElastiCache (Redis OSS) to cache application data. A CloudOps engineer must implement a solution to increase the resilience of the cache. The solution also must minimize the recovery time objective (RTO).
Which solution will meet these requirements?
Antwort: A
Begründung:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Doocuments:
For high availability and fast failover, ElastiCache for Redis supports replication groups with Multi-AZ and automatic failover. CloudOps guidance states that a primary node can be paired with one or more replicas across multiple Availability Zones; if the primary fails, Redis automatically promotes a replica to primary in seconds, thereby minimizing RTO. This architecture maintains in-memory data continuity without waiting for backup restore operations. Backups (Options B and D) provide durability but require restore and re-warm procedures that increase RTO and may impact application latency. Switching engines (Option A) to Memcached does not provide Redis replication/failover semantics and would not inherently improve resilience for this use case. Therefore, creating a read replica in a different AZ and enabling Multi-AZ with automatic failover is the prescribed CloudOps pattern to increase resilience and achieve the lowest practical RTO for Redis caches.
References:* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Reliability and Business Continuity* Amazon ElastiCache for Redis - Replication Groups, Multi-AZ, and Automatic Failover* AWS Well-Architected Framework - Reliability Pillar
232. Frage
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