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Amazon AWS Certified Machine Learning Engineer - Associate MLA-C01 Practice Test 56
Question 550
During risk sign-off, the team must assess this approved design step: Tune minimum serving capacity and scaling thresholds to observed burst requirements. This relates to a situation where a production predictor reaches its per-instance invocation target during a flash sale, and scale-out is too slow to prevent a transient queue buildup. Which limitation is most important when deciding whether this change is suitable?
- Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases.
- A one-request benchmark is insufficient to prove peak production capacity.
- Reducing minimum capacity too far can increase cold scaling delay even if average cost falls.
- AWS Budgets alerts do not automatically stop resources unless explicit budget actions are configured.
Explanation
Correct Answer
C:This is a real operational limit for the described design: Reducing minimum capacity too far can increase cold scaling delay even if average cost falls. The associated control is: Tune minimum serving capacity and scaling thresholds to observed burst requirements. Its intended result is: The service maintains enough ready model instances for foreseeable traffic. This limitation must still be managed.
Incorrect Answers
A:That concern belongs to a different design: A small internal model is invoked only during two short business windows, while real-time endpoint hosts remain idle overnight. The relevant boundary for this case is: Reducing minimum capacity too far can increase cold scaling delay even if average cost falls. These are different constraints.
B:That concern belongs to a different design: A real-time inference model consumes expensive GPU instances, but GPU metrics show low utilization and CPU benchmarks nearly meet the service objective. The relevant boundary for this case is: Reducing minimum capacity too far can increase cold scaling delay even if average cost falls. These are different constraints.
D:That concern belongs to a different design: A proof-of-concept ML environment unexpectedly runs weekend training jobs and needs an alert before the monthly AWS spend cap is consumed. The relevant boundary for this case is: Reducing minimum capacity too far can increase cold scaling delay even if average cost falls. These are different constraints.
Question 551
A release gate must account for this limitation while using: Use eligible SageMaker serverless inference or an approved scheduled endpoint lifecycle strategy. This relates to a situation where a small internal model is invoked only during two short business windows, while real-time endpoint hosts remain idle overnight. Which limitation is most important when deciding whether this change is suitable?
- Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases.
- Reducing minimum capacity too far can increase cold scaling delay even if average cost falls.
- A one-request benchmark is insufficient to prove peak production capacity.
- Spot capacity and savings vary by region, instance family, and availability.
Explanation
Correct Answer
A:This is a real operational limit for the described design: Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases. The associated control is: Use eligible SageMaker serverless inference or an approved scheduled endpoint lifecycle strategy. Its intended result is: Compute spend better follows actual invocation or active-window demand. This limitation must still be managed.
Incorrect Answers
B:That concern belongs to a different design: A production predictor reaches its per-instance invocation target during a flash sale, and scale-out is too slow to prevent a transient queue buildup. The relevant boundary for this case is: Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases. These are different constraints.
C:That concern belongs to a different design: A real-time inference model consumes expensive GPU instances, but GPU metrics show low utilization and CPU benchmarks nearly meet the service objective. The relevant boundary for this case is: Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases. These are different constraints.
D:That concern belongs to a different design: A weekly experiment can tolerate interruptions and needs lower training spend, but current jobs always use dedicated On-Demand compute. The relevant boundary for this case is: Serverless cold starts or runtime limitations can make it unsuitable for stringent SLA cases. These are different constraints.
Question 552
The technical review is assessing an important boundary of this proposal: Build a focused CloudWatch dashboard linking infrastructure and serving alarms with cost reports. This relates to a situation where a platform team monitors training failures, endpoint errors, p95 latency, and per-project costs in separate consoles and cannot triage the end-to-end ML service quickly. Which limitation is most important when deciding whether this change is suitable?
- Recommendations still depend on realistic model payload sizes and traffic patterns.
- Spot capacity and savings vary by region, instance family, and availability.
- A one-request benchmark is insufficient to prove peak production capacity.
- A dashboard displays existing telemetry and cannot compensate for missing metric collection.
Explanation
Correct Answer
D:This is a real operational limit for the described design: A dashboard displays existing telemetry and cannot compensate for missing metric collection. The associated control is: Build a focused CloudWatch dashboard linking infrastructure and serving alarms with cost reports. Its intended result is: On-call staff can see related service health indicators in one operational view. This limitation must still be managed.
Incorrect Answers
A:That concern belongs to a different design: A model can run on several CPU and accelerator instance families and the team needs a principled capacity recommendation before choosing a production shape. The relevant boundary for this case is: A dashboard displays existing telemetry and cannot compensate for missing metric collection. These are different constraints.
B:That concern belongs to a different design: A weekly experiment can tolerate interruptions and needs lower training spend, but current jobs always use dedicated On-Demand compute. The relevant boundary for this case is: A dashboard displays existing telemetry and cannot compensate for missing metric collection. These are different constraints.
C:That concern belongs to a different design: A real-time inference model consumes expensive GPU instances, but GPU metrics show low utilization and CPU benchmarks nearly meet the service objective. The relevant boundary for this case is: A dashboard displays existing telemetry and cannot compensate for missing metric collection. These are different constraints.
Question 553
A single ML platform team is handling two distinct changes for the same system. Workstream A: A SageMaker training job was given administrator-level permissions, though it only needs one S3 training prefix and a KMS key. Workstream B: An ML deployment pipeline pulls a custom container image containing a known vulnerable package and security wants the image rejected before production. Select exactly TWO measures, one that directly resolves each workstream.
- Replace wildcard permissions with a scoped execution role allowing only required data and key actions.
- Enable supported ECR image scanning and block promotion of artifacts with disallowed findings.
- Restrict CodeBuild's role to build-related resource actions and move deployment privileges to a separate release role.
- Encrypt model artifacts with a suitable KMS key and grant decryption only to approved roles.
- Limit the proxy security group ingress to authorized application security groups or subnet boundaries.
Explanation
Correct Answers
A:This action fits the situation: A SageMaker training job was given administrator-level permissions, though it only needs one S3 training prefix and a KMS key. It implements the needed technical control: Replace wildcard permissions with a scoped execution role allowing only required data and key actions. The intended outcome is that training can access its authorized inputs without broad administrative capability. The important limitation is that least privilege must include legitimate output writes and KMS decrypt/encrypt operations as appropriate.
B:This action fits the situation: An ML deployment pipeline pulls a custom container image containing a known vulnerable package and security wants the image rejected before production. It implements the needed technical control: Enable supported ECR image scanning and block promotion of artifacts with disallowed findings. The intended outcome is that the pipeline can prevent deployment of container images that fail the security baseline. The important limitation is that passing a vulnerability scan does not guarantee the runtime has no exploitable weaknesses.
Incorrect Answers
C:That alternative addresses a different task: A CodeBuild project used in an ML pipeline has permission to update production SageMaker endpoints even though its only job is to run tests and publish a container image. The selected workloads instead require Scoped SageMaker execution permissions, ECR vulnerability findings.
D:That alternative addresses a different task: A regulated organization stores model artifacts in S3 and requires auditable control over which deployment roles can decrypt them. The selected workloads instead require Scoped SageMaker execution permissions, ECR vulnerability findings.
E:That alternative addresses a different task: A private application in an AWS VPC should be the only workload able to reach a prediction proxy, but its current security group allows TCP traffic from every CIDR. The selected workloads instead require Scoped SageMaker execution permissions, ECR vulnerability findings.
Question 554
A single ML platform team is handling two distinct changes for the same system. Workstream A: An ML data bucket must reject client uploads that do not request the approved server-side encryption mode even though S3 default encryption exists. Workstream B: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. Select exactly TWO measures, one that directly resolves each workstream.
- Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
- Apply a tested S3 bucket policy that enforces the required encryption conditions for the defined upload path.
- Enable an appropriate AWS Config rule and notifications for ongoing bucket configuration checks.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
- Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
Explanation
Correct Answers
B:This action fits the situation: An ML data bucket must reject client uploads that do not request the approved server-side encryption mode even though S3 default encryption exists. It implements the needed technical control: Apply a tested S3 bucket policy that enforces the required encryption conditions for the defined upload path. The intended outcome is that noncompliant write requests fail before protected input data is stored. The important limitation is that encryption policy condition handling must account for AWS-managed default encryption and client behavior.
E:This action fits the situation: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. It implements the needed technical control: Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role. The intended outcome is that credentials can be rotated without embedding plaintext into the container image. The important limitation is that secrets retrieval still requires secure logging and prevents no exposure if code prints the value.
Incorrect Answers
A:That alternative addresses a different task: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. The selected workloads instead require Reject unencrypted data uploads, Rotate model API secrets.
C:That alternative addresses a different task: A company needs evidence that S3 buckets holding ML training data remain free of public access and that changes are flagged after initial deployment. The selected workloads instead require Reject unencrypted data uploads, Rotate model API secrets.
D:That alternative addresses a different task: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. The selected workloads instead require Reject unencrypted data uploads, Rotate model API secrets.
Question 555
A single ML platform team is handling two distinct changes for the same system. Workstream A: A regulated organization stores model artifacts in S3 and requires auditable control over which deployment roles can decrypt them. Workstream B: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. Select exactly TWO measures, one that directly resolves each workstream.
- Encrypt model artifacts with a suitable KMS key and grant decryption only to approved roles.
- Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
- Limit the proxy security group ingress to authorized application security groups or subnet boundaries.
- Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
Explanation
Correct Answers
A:This action fits the situation: A regulated organization stores model artifacts in S3 and requires auditable control over which deployment roles can decrypt them. It implements the needed technical control: Encrypt model artifacts with a suitable KMS key and grant decryption only to approved roles. The intended outcome is that authorized deployments can load protected artifacts while other principals lack key access. The important limitation is that granting S3 GetObject without necessary KMS permissions can still cause access denied.
D:This action fits the situation: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. It implements the needed technical control: Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events. The intended outcome is that the team obtains a traceable record of relevant control-plane actions. The important limitation is that cloudTrail does not capture each model input payload by default and logs need tamper-resistant retention.
Incorrect Answers
B:That alternative addresses a different task: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. The selected workloads instead require KMS model artifact protection, Trace unauthorized endpoint calls.
C:That alternative addresses a different task: A private application in an AWS VPC should be the only workload able to reach a prediction proxy, but its current security group allows TCP traffic from every CIDR. The selected workloads instead require KMS model artifact protection, Trace unauthorized endpoint calls.
E:That alternative addresses a different task: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. The selected workloads instead require KMS model artifact protection, Trace unauthorized endpoint calls.
Question 556
A single ML platform team is handling two distinct changes for the same system. Workstream A: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. Workstream B: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. Select exactly TWO measures, one that directly resolves each workstream.
- Restrict CodeBuild's role to build-related resource actions and move deployment privileges to a separate release role.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
- Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
- Encrypt model artifacts with a suitable KMS key and grant decryption only to approved roles.
- Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
Explanation
Correct Answers
B:This action fits the situation: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. It implements the needed technical control: Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths. The intended outcome is that training data processing follows the private network boundary defined by security policy. The important limitation is that private subnets without endpoints can break necessary S3, ECR, or logging access.
C:This action fits the situation: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. It implements the needed technical control: Use a narrowly trusted cross-account IAM role and matching bucket and key permissions. The intended outcome is that the ML workload can read authorized cross-account data without public buckets or static keys. The important limitation is that cross-account access requires compatible identity policies and resource/key policies where applicable.
Incorrect Answers
A:That alternative addresses a different task: A CodeBuild project used in an ML pipeline has permission to update production SageMaker endpoints even though its only job is to run tests and publish a container image. The selected workloads instead require Private network processing jobs, Cross account training dataset access.
D:That alternative addresses a different task: A regulated organization stores model artifacts in S3 and requires auditable control over which deployment roles can decrypt them. The selected workloads instead require Private network processing jobs, Cross account training dataset access.
E:That alternative addresses a different task: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. The selected workloads instead require Private network processing jobs, Cross account training dataset access.
Question 557
A single ML platform team is handling two distinct changes for the same system. Workstream A: An ML deployment pipeline pulls a custom container image containing a known vulnerable package and security wants the image rejected before production. Workstream B: A bank enables data capture for inference troubleshooting but must protect captured request bodies and limit who can read the resulting S3 objects. Select exactly TWO measures, one that directly resolves each workstream.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
- Enable supported ECR image scanning and block promotion of artifacts with disallowed findings.
- Limit the proxy security group ingress to authorized application security groups or subnet boundaries.
- Apply a tested S3 bucket policy that enforces the required encryption conditions for the defined upload path.
- Encrypt captured request and response artifacts in S3 and restrict the designated investigation role.
Explanation
Correct Answers
B:This action fits the situation: An ML deployment pipeline pulls a custom container image containing a known vulnerable package and security wants the image rejected before production. It implements the needed technical control: Enable supported ECR image scanning and block promotion of artifacts with disallowed findings. The intended outcome is that the pipeline can prevent deployment of container images that fail the security baseline. The important limitation is that passing a vulnerability scan does not guarantee the runtime has no exploitable weaknesses.
E:This action fits the situation: A bank enables data capture for inference troubleshooting but must protect captured request bodies and limit who can read the resulting S3 objects. It implements the needed technical control: Encrypt captured request and response artifacts in S3 and restrict the designated investigation role. The intended outcome is that sensitive captured inference records remain accessible only to authorized reviewers. The important limitation is that encryption at rest does not remove personal-data retention or minimization obligations.
Incorrect Answers
A:That alternative addresses a different task: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. The selected workloads instead require ECR vulnerability findings, Encrypted captured inference records.
C:That alternative addresses a different task: A private application in an AWS VPC should be the only workload able to reach a prediction proxy, but its current security group allows TCP traffic from every CIDR. The selected workloads instead require ECR vulnerability findings, Encrypted captured inference records.
D:That alternative addresses a different task: An ML data bucket must reject client uploads that do not request the approved server-side encryption mode even though S3 default encryption exists. The selected workloads instead require ECR vulnerability findings, Encrypted captured inference records.
Question 558
An ML engineering team faces this production constraint: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. Which action best addresses the actual requirement?
- Apply a tested S3 bucket policy that enforces the required encryption conditions for the defined upload path.
- Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
- Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
Explanation
Correct Answer
B:This action fits the situation: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. It implements the needed technical control: Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role. The intended outcome is that credentials can be rotated without embedding plaintext into the container image. The important limitation is that secrets retrieval still requires secure logging and prevents no exposure if code prints the value.
Incorrect Answers
A:This action is appropriate for another requirement: An ML data bucket must reject client uploads that do not request the approved server-side encryption mode even though S3 default encryption exists. It does not solve the presented constraint: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. The matching action for this case is: Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
C:This action is appropriate for another requirement: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. It does not solve the presented constraint: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. The matching action for this case is: Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
D:This action is appropriate for another requirement: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. It does not solve the presented constraint: A preprocessing container needs a database credential and currently keeps a plaintext password in its Dockerfile. The matching action for this case is: Store the credential in AWS Secrets Manager and retrieve it at runtime with a scoped execution role.
Question 559
A cloud ML change request describes the following issue: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. Which action best addresses the actual requirement?
- Encrypt model artifacts with a suitable KMS key and grant decryption only to approved roles.
- Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events.
- Limit the proxy security group ingress to authorized application security groups or subnet boundaries.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
Explanation
Correct Answer
B:This action fits the situation: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. It implements the needed technical control: Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events. The intended outcome is that the team obtains a traceable record of relevant control-plane actions. The important limitation is that cloudTrail does not capture each model input payload by default and logs need tamper-resistant retention.
Incorrect Answers
A:This action is appropriate for another requirement: A regulated organization stores model artifacts in S3 and requires auditable control over which deployment roles can decrypt them. It does not solve the presented constraint: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. The matching action for this case is: Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events.
C:This action is appropriate for another requirement: A private application in an AWS VPC should be the only workload able to reach a prediction proxy, but its current security group allows TCP traffic from every CIDR. It does not solve the presented constraint: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. The matching action for this case is: Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events.
D:This action is appropriate for another requirement: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. It does not solve the presented constraint: Security operations detects unexpected calls to model-management APIs and needs immutable audit evidence identifying the AWS principal and originating source. The matching action for this case is: Enable protected CloudTrail logging with retention and investigate the observed SageMaker API events.
Question 560
A team is choosing a specific control for this workload: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. Which action best addresses the actual requirement?
- Apply a tested S3 bucket policy that enforces the required encryption conditions for the defined upload path.
- Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
- Configure SageMaker jobs for restricted VPC networking with only approved endpoints and outbound paths.
- Limit the proxy security group ingress to authorized application security groups or subnet boundaries.
Explanation
Correct Answer
B:This action fits the situation: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. It implements the needed technical control: Use a narrowly trusted cross-account IAM role and matching bucket and key permissions. The intended outcome is that the ML workload can read authorized cross-account data without public buckets or static keys. The important limitation is that cross-account access requires compatible identity policies and resource/key policies where applicable.
Incorrect Answers
A:This action is appropriate for another requirement: An ML data bucket must reject client uploads that do not request the approved server-side encryption mode even though S3 default encryption exists. It does not solve the presented constraint: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. The matching action for this case is: Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
C:This action is appropriate for another requirement: A hospital's training jobs should not call arbitrary public internet endpoints while reading private patient data. It does not solve the presented constraint: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. The matching action for this case is: Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
D:This action is appropriate for another requirement: A private application in an AWS VPC should be the only workload able to reach a prediction proxy, but its current security group allows TCP traffic from every CIDR. It does not solve the presented constraint: A central data account holds training data, and a separate ML account requires only read access to one approved S3 prefix for scheduled training. The matching action for this case is: Use a narrowly trusted cross-account IAM role and matching bucket and key permissions.
AWS Certified Machine Learning Engineer - Associate MLA-C01 Practice Tests