- A
Use a KMS key for data encryption
Why wrong: KMS encrypts data at rest (storage volumes), not in transit.
- B
Configure the training job in VPC-only mode
Why wrong: VPC-only mode restricts traffic to VPC but does not add encryption.
- C
Enable inter-container traffic encryption
This encrypts data in transit between containers in the same training job.
- D
Enable network isolation mode
Why wrong: Network isolation prevents internet access but does not encrypt inter-container traffic.
MLA-C01 Practice Question: ML Solution Monitoring, Maintenance, and Security
This MLA-C01 practice question tests your understanding of ml solution monitoring, maintenance, and security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization needs to ensure that all data transmitted between containers in a SageMaker training job is encrypted. In the training job configuration, which setting should they enable?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable inter-container traffic encryption
Option C is correct because SageMaker training jobs support inter-container traffic encryption, which ensures that data transmitted between containers (e.g., distributed training workers) is encrypted in transit. This setting uses TLS to protect the communication channel, meeting the organization's requirement for encrypted data transmission between containers.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a KMS key for data encryption
Why it's wrong here
KMS encrypts data at rest (storage volumes), not in transit.
- ✗
Configure the training job in VPC-only mode
Why it's wrong here
VPC-only mode restricts traffic to VPC but does not add encryption.
- ✓
Enable inter-container traffic encryption
Why this is correct
This encrypts data in transit between containers in the same training job.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable network isolation mode
Why it's wrong here
Network isolation prevents internet access but does not encrypt inter-container traffic.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse encryption at rest (KMS keys) with encryption in transit, or assume VPC-only mode or network isolation automatically encrypts inter-container traffic, when in fact they only control network boundaries without enabling TLS encryption between containers.
Detailed technical explanation
How to think about this question
Inter-container traffic encryption in SageMaker leverages TLS 1.2 to encrypt data exchanged between containers within the same training job, such as parameter server and worker nodes in distributed training. This is critical for compliance with standards like PCI DSS or HIPAA, where data in transit must be encrypted even within a private network. Without this setting, containers communicate over plaintext, which could expose sensitive model gradients or training data to interception.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this MLA-C01 question test?
ML Solution Monitoring, Maintenance, and Security — This question tests ML Solution Monitoring, Maintenance, and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable inter-container traffic encryption — Option C is correct because SageMaker training jobs support inter-container traffic encryption, which ensures that data transmitted between containers (e.g., distributed training workers) is encrypted in transit. This setting uses TLS to protect the communication channel, meeting the organization's requirement for encrypted data transmission between containers.
What should I do if I get this MLA-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This MLA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MLA-C01 exam.
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