The correct first action is to contact the customer to verify the file is intended. This step is critical because a legitimate file flagged as malicious often results from a false positive, where the security scanner misidentifies benign content due to heuristic or signature-based detection errors. By verifying with the sender, the analyst avoids unnecessary escalation or disruption while adhering to the security policy’s requirement to scan all attachments. On the Cisco CyberOps Associate 200-201 exam, this scenario tests your understanding of the incident response process and the principle of validating before acting—a common trap is jumping to quarantine or escalate without confirmation. Remember the memory tip: “Verify before you vilify” to emphasize that confirmation with the source prevents premature actions that could harm business operations or trust.
200-201 Security Policies and Procedures Practice Question
This 200-201 practice question tests your understanding of security policies and procedures. 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 security policy requires that all email attachments be scanned for malware. An employee receives a legitimate PDF from a customer that is flagged as malicious. What should the analyst do first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Contact the customer to verify the file is intended.
Option C is correct because verifying with the sender prevents unnecessary actions. Option A is too aggressive without confirmation. Option B escalates prematurely. Option D might be done later. Option E violates policy.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Allow the email through since it's from a known sender.
Why it's wrong here
Violates security policy.
✓
Contact the customer to verify the file is intended.
Why this is correct
Verification with sender is the appropriate first step.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Quarantine the email and delete the attachment.
Why it's wrong here
Premature without verification.
✗
Escalate to the incident response team.
Why it's wrong here
Premature escalation before verifying.
✗
Update the antivirus signatures and rescan.
Why it's wrong here
This may be done after verification, not first.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-201 NAT questions on configuration and troubleshooting.
Security Policies and Procedures — This question tests Security Policies and Procedures — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Contact the customer to verify the file is intended. — Option C is correct because verifying with the sender prevents unnecessary actions. Option A is too aggressive without confirmation. Option B escalates prematurely. Option D might be done later. Option E violates policy.
What should I do if I get this 200-201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 200-201 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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