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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified CloudOps Engineer - Associate |
| Exam Number: | SOA-C03 |
| Exam Duration: | 130 minutes |
| Exam Format: | Multiple choice, Multiple response |
| Passing Score: | 720 (scaled score 100–1000) |
| Exam Price: | 150 USD |
| Related Certifications: | AWS Certified SysOps Administrator - Associate (SOA-C02, retired) |
| Available Languages: | Simplified Chinese, English, Korean, Japanese |
| Real Exam Qty: | 65 (50 scored, 15 unscored) |
| Certificate Validity Period: | 3 years |
| Recommended Training: | AWS Official Exam Guide AWS Training and Certification |
| Exam Registration: | Pearson VUE Scheduling AWS Certification Registration |
| Sample Questions: | Amazon SOA-C03 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE test centers |
| Pre Condition: | No mandatory prerequisites; recommended 1 year of experience deploying, managing, and operating workloads on AWS |
| Official Syllabus URL: | https://docs.aws.amazon.com/aws-certification/latest/sysops-administrator-associate-03/sysops-administrator-associate-03.html |
SOA-C03テスト資料は、ユーザーが勉強するたびに合理的な配置であり、可能な限りユーザーが最新のSOA-C03試験トレントを長期間使用しないようにします。 。ユーザーが知識を習得する必要があるたびにSOA-C03練習教材は、ユーザーがこの期間に学習タスクを完了することができる限り、SOA-C03テスト教材は自動的に学習システムを終了し、ユーザーに休憩を取るよう警告します。次の学習期間に備えてください。
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質問 # 26
An Amazon EC2 instance is running an application that uses Amazon Simple Queue Service (Amazon SQS) queues. A CloudOps engineer must ensure that the application can read, write, and delete messages from the SQS queues.
Which solution will meet these requirements in the MOST secure manner?
正解：A
解説：
The most secure way for an EC2 instance to access AWS services is by using an IAM role attached to the instance. IAM roles eliminate the need for long-term credentials, which reduces the risk of credential leakage and simplifies credential rotation.
Following the principle of least privilege, the IAM policy attached to the role should grant only the permissions required: sqs:SendMessage, sqs:ReceiveMessage, and sqs:DeleteMessage. Granting broader permissions such as sqs:* violates least privilege and increases security risk.
Options A and B rely on IAM users and static credentials, which are not recommended for applications running on EC2. Option C grants excessive permissions.
Therefore, attaching an EC2 IAM role with only the required SQS permissions is the most secure solution.
質問 # 27
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?
正解：A
解説：
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.
質問 # 28
A company uses default settings to create an AWS Lambda function. The function needs to access an Amazon RDS database that is in a private subnet of a VPC. The function has the correct IAM permissions to access the database. The private subnet has appropriate routing configurations and is accessible from within the VPC.
However, the Lambda function is unable to connect to the RDS instance.
What is the likely reason the Lambda function cannot connect to the RDS instance?
正解：D
解説：
By default, a newly created AWS Lambda function is not attached to a customer VPC. In its default configuration, Lambda runs in an AWS-managed network environment and can reach public internet endpoints, but it does not automatically have network-level connectivity into private subnets within a VPC.
Accessing an Amazon RDS instance that is placed in a private subnet requires the Lambda function to be configured for VPC access. This means selecting the target VPC, choosing subnets (typically private subnets with appropriate routing), and associating one or more security groups with the Lambda function's elastic network interfaces (ENIs). Once configured, Lambda creates ENIs in the selected subnets and uses them to communicate with resources such as RDS inside the VPC.
In this scenario, the RDS database is in a private subnet and is reachable from within the VPC, but the Lambda function cannot connect. The most likely cause is that the function was created with default settings and therefore was not deployed into the VPC that contains the database. IAM permissions are not sufficient for network connectivity; IAM controls authorization to call AWS APIs, while VPC attachment and security groups control the network path.
Option A is incorrect because Lambda does not require an "RDS destination" setting; connectivity is established through VPC networking and the database endpoint. Option C is not supported by the prompt; there is no indication that the database is in a different VPC, and the default issue is usually "not in a VPC at all." Option D is less likely because Lambda security groups allow all outbound traffic by default unless explicitly restricted; the more common default failure is lack of VPC configuration.
Therefore, the likely reason is that the Lambda function was not configured to run in the same VPC as the RDS instance.
質問 # 29
A company runs an application on Amazon EC2 instances in an Auto Scaling group. Scale-out actions take a long time because of long-running boot scripts. The CloudOps engineer must reduce scale-out time without overprovisioning.
Which solution will meet these requirements?
正解：C
解説：
Comprehensive Explanation (250-350 words):
An Auto Scaling warm pool keeps pre-initialized instances in a stopped or running state, allowing them to be quickly attached to the Auto Scaling group when scaling events occur. This significantly reduces scale-out latency caused by long bootstrapping scripts.
Unlike increasing the minimum instance count, warm pools do not permanently overprovision resources.
Predictive scaling improves timing but does not eliminate boot time delays.
Therefore, warm pools provide the fastest scale-out with minimal cost overhead.
質問 # 30
A CloudOps engineer needs to control access to groups of Amazon EC2 instances using AWS Systems Manager Session Manager. Specific tags on the EC2 instances have already been added.
Which additional actions should the CloudOps engineer take to control access? (Select TWO.)
正解：B、C
解説：
AWS Systems Manager Session Manager allows secure, auditable instance access without SSH keys or inbound ports. To control access based on instance tags, CloudOps best practices require two configurations:
Attach an IAM policy to users or groups granting ssm:StartSession,
ssm:DescribeInstanceInformation, and ssm:DescribeSessions.
Include a Condition element in the IAM policy referencing instance tags, such as Condition:
{"StringEquals": {"ssm:resourceTag/Environment": "Production"}}.
This ensures users can start sessions only with instances that have matching tags, providing fine- grained access control.
AWS CloudOps documentation under Security and Compliance states:
"Use IAM policies with resource tags in the Condition element to restrict which managed instances users can access using Session Manager." Options B and D incorrectly suggest attaching roles or service accounts that are not relevant to user-level access control. Option C (placement groups) pertains to networking and performance, not access management. Therefore, A and E together provide tag-based, least-privilege access as required.
質問 # 31
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SOA-C03参考書: https://jp.fast2test.com/SOA-C03-premium-file.html
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