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| Section | Weight | Objectives |
|---|---|---|
| Reliability and Business Continuity | 16% | - High availability and fault tolerance design - Data replication and recovery mechanisms - Backup and disaster recovery strategies |
| Deployment, Provisioning, and Automation | 18% | - Configuration management and orchestration tools - Infrastructure as Code using AWS CloudFormation - Automated deployment pipelines |
| Security and Compliance | 18% | - Security monitoring and auditing - Identity and access management (IAM) - Data protection and encryption |
| Monitoring, Logging, and Remediation | 20% | - Automated remediation and operational workflows - Centralized logging and log analysis with AWS services - Metrics and monitoring using Amazon CloudWatch |
| Cost and Performance Optimization | 28% | - Right-sizing and capacity planning - Resource performance tuning - Cost monitoring and optimization strategies |
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問題 #73
A company has attached the following policy to an IAM user:
{
" Version " : " 2012-10-17 " ,
" Statement " : [
{
" Effect " : " Allow " ,
" Action " : " rds:Describe* " ,
" Resource " : " * "
},
{
" Effect " : " Allow " ,
" Action " : " ec2:* " ,
" Resource " : " * " ,
" Condition " : {
" StringEquals " : {
" ec2:Region " : " us-east-1 "
}
}
},
{
" Effect " : " Deny " ,
" NotAction " : [
" ec2:* " ,
" s3:GetObject "
],
" Resource " : " * "
}
]
}
Which of the following actions are allowed for the IAM user?
答案：B
解題說明：
The explicit Deny statement uses NotAction, which means it denies all actions except ec2:* and s3:GetObject.
Explicit deny overrides any allow. Therefore, even though rds:Describe* is allowed in the first statement, it is denied by the Deny statement because RDS actions are not excluded from the deny. s3:PutObject is also denied because only s3:GetObject is excluded. EC2 actions are excluded from the deny, but they still need an applicable Allow. The second statement allows ec2:* only when the EC2 Region condition equals us-east-1.
Therefore, ec2:DescribeInstances in us-east-1 is allowed, while ec2:AttachNetworkInterface in eu-west-1 is not allowed. Option C is the only permitted action.
問題 #74
A CloudOps engineer has created an AWS Service Catalog portfolio and shared it with a second AWS account in the company, managed by a different CloudOps engineer.
Which action can the CloudOps engineer in the second account perform?
答案：A
解題說明：
Per the AWS Cloud Operations and Service Catalog documentation, when a portfolio is shared across AWS accounts, the recipient account imports the shared portfolio.
The recipient CloudOps engineer cannot modify the original products or their configurations but can:
* Add products from the imported portfolio into their local portfolios for deployment,
* Control end-user access in the recipient account, and
* Manage local constraints or permissions.
However, the recipient cannot edit, delete, or reconfigure the shared products (Options B, C, and D). The source (owner) account retains full administrative control over products, launch roles, and lifecycle policies.
This model aligns with AWS CloudOps principles of centralized governance with distributed self-service deployment across multiple accounts.
Thus, Option A is correct-imported portfolios allow the recipient to add products to a local portfolio but not alter the shared configuration.
Reference: AWS Cloud Operations & Governance Guide - Managing Shared AWS Service Catalog Portfolios Across Multiple Accounts
問題 #75
A company recently purchased Savings Plans. The company wants to receive email notification when the company's utilization drops below 90% for a given day. Which solution will meet this requirement?
答案：B
解題說明：
AWS Budgets supports Savings Plans utilization budgets. The company can configure a daily utilization threshold of 90% and use Amazon SNS to send email notifications when Savings Plans utilization falls below that threshold.
問題 #76
A company's website runs on an Amazon EC2 Linux instance. The website needs to serve PDF files from an Amazon S3 bucket. All public access to the S3 bucket is blocked at the account level. The company needs to allow website users to download the PDF files.
Which solution will meet these requirements with the LEAST administrative effort?
答案：A
解題說明：
Per the AWS Cloud Operations, Networking, and Security documentation, the best practice for serving private S3 content securely to end users is to use Amazon CloudFront with Origin Access Control (OAC).
OAC enables CloudFront to access S3 buckets privately, even when Block Public Access settings are enabled at the account level. This allows content to be delivered globally and securely without making the S3 bucket public. The bucket policy explicitly allows access only from the CloudFront distribution, ensuring that users can retrieve PDF files only via CloudFront URLs.
This configuration offers:
* Automatic scalability through CloudFront caching,
* Improved security via private access control,
* Minimal administration effort with fully managed services.
Other options require manual handling or make the bucket public, violating AWS security best practices.
Therefore, Option B-using CloudFront with Origin Access Control and a restrictive bucket policy- provides the most secure, efficient, and low-maintenance CloudOps solution.
Reference: AWS Cloud Operations and Content Delivery Guide - Section: Serving Private Content Securely from Amazon S3 via CloudFront Using Origin Access Control
問題 #77
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?
答案：A
解題說明：
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.
問題 #78
......
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