ANS-C01 Network Management and Operations Practice Question
This ANS-C01 practice question tests your understanding of network management and operations. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A company has a Direct Connect connection with a public VIF to access AWS public services. The on-premises network team reports that they can reach S3 but not DynamoDB. The route table on the customer router shows a default route to the public VIF. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The on-premises firewall is blocking outbound traffic to the DynamoDB IP ranges.
Option C is correct because DynamoDB uses a different set of public IP ranges than S3, and the on-premises firewall might block access to those ranges. Option A is wrong because the VPC does not affect public VIF traffic. Option B is wrong because the public VIF does not involve BGP; it uses public IPs. Option D is wrong because the Direct Connect connection is working for S3.
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.
✗
The Direct Connect connection is degraded and only supports S3 traffic.
Why it's wrong here
Bandwidth is shared; if connection works for S3, it should work for DynamoDB.
✗
The BGP session between the customer router and AWS is down.
Why it's wrong here
Public VIF does not use BGP; it uses static routes.
✓
The on-premises firewall is blocking outbound traffic to the DynamoDB IP ranges.
Why this is correct
Different AWS services have different IP ranges; firewall may block DynamoDB.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The VPC route table does not have a route to the DynamoDB endpoint.
Why it's wrong here
Public VIF traffic does not go through the VPC.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Network Management and Operations — This question tests Network Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The on-premises firewall is blocking outbound traffic to the DynamoDB IP ranges. — Option C is correct because DynamoDB uses a different set of public IP ranges than S3, and the on-premises firewall might block access to those ranges. Option A is wrong because the VPC does not affect public VIF traffic. Option B is wrong because the public VIF does not involve BGP; it uses public IPs. Option D is wrong because the Direct Connect connection is working for S3.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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