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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified SysOps Administrator - Associate (SOA-C03) |
| Exam Number: | SOA-C03 |
| Related Certifications: | AWS Certified Developer - Associate AWS Certified Solutions Architect - Associate |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple choice, Multiple response |
| Available Languages: | French, Simplified Chinese, German, Spanish (Latin America), Korean, English, Japanese |
| Exam Duration: | 130 minutes |
| Real Exam Qty: | 65 questions |
| Passing Score: | 720 (scaled score out of 1000) |
| Exam Price: | 150 USD |
| Recommended Training: | AWS Skill Builder - SysOps Administrator Learning Path AWS Certified SysOps Administrator Associate Training (Official Learning Resources) |
| Exam Registration: | AWS Certification Official Registration AWS Certification Portal |
| Sample Questions: | Amazon SOA-C03 Sample Questions |
| Exam Way: | Online proctored or test center delivery |
| Pre Condition: | No formal prerequisites, but AWS recommends at least 1 year of experience managing AWS workloads in a SysOps or cloud operations role. |
| Official Syllabus URL: | https://aws.amazon.com/certification/certified-sysops-administrator-associate/ |
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質問 # 305
A company's CloudOps engineer is troubleshooting communication between the components of an application. The company configured VPC flow logs to be published to Amazon CloudWatch Logs. However, there are no logs in CloudWatch Logs.
What could be blocking the VPC flow logs from being published to CloudWatch Logs?
正解：C
解説：
VPC Flow Logs require permissions to create log groups and log streams in Amazon CloudWatch Logs. If the IAM role associated with the flow log lacks the logs:CreateLogGroup permission, CloudWatch Logs cannot be created and no logs will appear.
Option B is unrelated because CreateExportTask is used for exporting logs, not publishing them. IPv6 configuration and VPC peering do not prevent flow logs from being delivered.
Ensuring the IAM role has the correct CloudWatch Logs permissions resolves the issue.
質問 # 306
A company is migrating a legacy application to AWS. The application runs on EC2 instances across multiple Availability Zones behind an Application Load Balancer (ALB). The target group routing algorithm is set to weighted random, and the application requires session affinity (sticky sessions).
After deployment, users report random application errors that were not present before migration, even though target health checks are passing.
Which solution will meet this requirement?
正解：A
解説：
According to the AWS Cloud Operations and Elastic Load Balancing documentation, Application Load Balancer (ALB) supports multiple routing algorithms to distribute requests among targets:
Round robin (default)
Least outstanding requests (LOR)
Weighted random
When applications require session affinity, AWS recommends using "least outstanding requests" as the load balancing algorithm because it reduces latency, distributes load evenly, and ensures consistent target responsiveness during high traffic.
Using weighted random routing with sticky sessions can cause sessions to be routed inconsistently if one target's capacity fluctuates, leading to session mismatches and application errors - especially when user sessions rely on instance-specific state.
Disabling cross-zone balancing (Option C) or adjusting deregistration delay (Option D) does not address routing inconsistency. Anomaly mitigation (Option B) protects against target performance degradation, not sticky-session misrouting.
Therefore, the correct solution is Option A - changing the target group's routing algorithm to least outstanding requests ensures smoother, predictable session handling and resolves random application errors.
質問 # 307
A retail company runs a web application. The application uses an Application Load Balancer (ALB) to distribute traffic across multiple Amazon EC2 instances in two Availability Zones. The application experiences high traffic during flash sales. The company needs to ensure even distribution of requests across all healthy instances. Additionally, the company requires session persistence for shopping cart functionality. Which configuration will meet these requirements with the LEAST administrative effort?
正解：C
解説：
An Application Load Balancer can distribute traffic across healthy targets by using the round robin routing algorithm. Enabling cross-zone load balancing helps spread requests evenly across instances in multiple Availability Zones, and enabling target group stickiness provides session persistence for users who need shopping cart continuity.
質問 # 308
A company is using an Amazon Aurora MySQL DB cluster that has point-in-time recovery, backtracking, and automatic backup enabled. A CloudOps engineer needs to roll back the DB cluster to a specific recovery point within the previous 72 hours. Restores must be completed in the same production DB cluster.
Which solution will meet these requirements?
正解：B
解説：
As documented in AWS Cloud Operations and Database Recovery, Aurora Backtrack allows you to rewind the existing database cluster to a chosen point in time without creating a new cluster.
This feature supports fine-grained rollback for accidental data changes, making it ideal for scenarios like table deletions or logical corruption.
Backtracking maintains continuous transaction logs and permits rewinding within a configurable window (up to 72 hours). It does not require creating a new cluster or endpoint, and it preserves the same production environment, fulfilling the operational requirement for in-place recovery.
In contrast, Point-in-Time Recovery (Option D) always creates a new cluster, while replica promotion (Option A) and Lambda restoration (Option B) are unrelated to immediate rollback operations.
Therefore, Option C, using Aurora Backtrack, best meets the requirement for same-cluster restoration and minimal downtime.
質問 # 309
A company is running a custom database on an Amazon EC2 instance. The database stores its data on an Amazon Elastic Block Store (Amazon EBS) volume. A SysOps administrator must set up a backup strategy for the EBS volume.
What should the SysOps administrator do to meet this requirement?
正解：B
解説：
Amazon Data Lifecycle Manager (DLM) is the AWS service specifically designed to automate the creation, retention, and deletion of EBS snapshots.
With DLM, you can:
- Automatically create snapshots on a recurring schedule (e.g., daily, hourly).
- Retain snapshots for a specific number of days.
- Delete old snapshots automatically to save costs.
- Ensure consistent and automated backups without manual intervention.
This approach fully meets the company's requirement for a backup strategy for the EBS volume.
質問 # 310
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SOA-C03関連資格試験対応: https://www.topexam.jp/SOA-C03_shiken.html
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