Evidence of Approved Firewall Change Before Implementation
This SY0-701 practice question tests your understanding of security program management and oversight. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
Change control evidence:
- CHG-8842: "Allow vendor IP range for maintenance window"
- Requested: 2026-04-18 09:10
- Reviewed by CAB: Approved 2026-04-18 11:40
- Implemented: 2026-04-18 22:05
- Post-change validation: Firewall logs show only the approved destination was opened
- Separate email: "Looks fine to me" from engineer after implementation
Based on the exhibit, which artifact is the strongest evidence that the firewall change was reviewed and approved before implementation?
Exhibit
Change control evidence:
- CHG-8842: "Allow vendor IP range for maintenance window"
- Requested: 2026-04-18 09:10
- Reviewed by CAB: Approved 2026-04-18 11:40
- Implemented: 2026-04-18 22:05
- Post-change validation: Firewall logs show only the approved destination was opened
- Separate email: "Looks fine to me" from engineer after implementation
A
The engineer's post-implementation email, because it confirms someone checked the change.
Why wrong: A post-change email is informal and does not prove formal approval happened before deployment.
B
The firewall logs, because they show the rule was applied successfully on the device.
Why wrong: Logs prove the change took effect, but they do not prove it was reviewed and authorized in advance.
C
The change request record with CAB approval timestamp and implementation time.
This is the best evidence because it shows formal review and approval occurred before the change was implemented. Auditors want controlled, time-stamped proof of authorization, not just technical confirmation that the firewall rule changed or an informal email afterward. The change record directly supports compliance with change management requirements.
D
The vendor's maintenance notice, because it explains why the rule was needed.
Why wrong: The vendor notice may justify the request, but it does not show internal review, approval, or governance.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The change request record with CAB approval timestamp and implementation time.
Option C is correct because the change request record with a CAB approval timestamp and implementation time provides a clear, auditable trail that the firewall change was formally reviewed and authorized by the Change Advisory Board before it was executed. This aligns with the change management process required for security program oversight, ensuring that changes are not implemented without proper governance.
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 engineer's post-implementation email, because it confirms someone checked the change.
Why it's wrong here
A post-change email is informal and does not prove formal approval happened before deployment.
✗
The firewall logs, because they show the rule was applied successfully on the device.
Why it's wrong here
Logs prove the change took effect, but they do not prove it was reviewed and authorized in advance.
✓
The change request record with CAB approval timestamp and implementation time.
Why this is correct
This is the best evidence because it shows formal review and approval occurred before the change was implemented. Auditors want controlled, time-stamped proof of authorization, not just technical confirmation that the firewall rule changed or an informal email afterward. The change record directly supports compliance with change management requirements.
Related concept
Read the scenario before looking for a memorised answer.
✗
The vendor's maintenance notice, because it explains why the rule was needed.
Why it's wrong here
The vendor notice may justify the request, but it does not show internal review, approval, or governance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse post-implementation verification (Option A) or technical success logs (Option B) with the governance requirement for pre-approval, which is the core of change management oversight.
Trap categories for this question
Command / output trap
The vendor notice may justify the request, but it does not show internal review, approval, or governance.
Detailed technical explanation
How to think about this question
In change management, the CAB approval timestamp is a critical control point that must occur before the implementation timestamp to satisfy audit requirements. The change request record typically includes fields for approval date/time, implementation date/time, and rollback procedures, which together form a complete change lifecycle. Real-world scenarios where this matters include compliance audits (e.g., PCI DSS, SOX) that require evidence of separation of duties and pre-approval for all network security changes.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SY0-701 question in full detail.
Security Program Management and Oversight — This question tests Security Program Management and Oversight — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The change request record with CAB approval timestamp and implementation time. — Option C is correct because the change request record with a CAB approval timestamp and implementation time provides a clear, auditable trail that the firewall change was formally reviewed and authorized by the Change Advisory Board before it was executed. This aligns with the change management process required for security program oversight, ensuring that changes are not implemented without proper governance.
What should I do if I get this SY0-701 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.
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An external auditor asks for proof that emergency firewall changes were reviewed and approved before implementation last quarter. Which two artifacts are the best evidence? Select two.
medium
✓ A.An approved change ticket that shows the reviewer, approver, and timestamps.
B.A screenshot of the firewall's current rule base after the change.
✓ C.CAB or workflow approval records documenting the decision.
D.A technician's memory of getting permission over the phone.
E.The organization's general information security policy.
Why A: An approved change ticket with reviewer, approver, and timestamps directly documents the required pre-approval workflow for emergency firewall changes. This artifact provides an auditable trail showing that the change was reviewed and approved before implementation, which is the exact evidence the auditor is requesting.
Variation 2. An external auditor asks for proof that firewall rule changes were reviewed and approved before being implemented during the last quarter. Which evidence is MOST appropriate to provide?
medium
A.A screenshot of the firewall management homepage showing that the system is online.
C.An email from the network team stating they remember reviewing the changes.
D.A list of the firewall vendor's product features from the company website.
Why B: Change tickets provide a formal, auditable record of the entire change management process, including requester identification, reviewer approval, implementation date, and rollback plan. This directly satisfies the auditor's requirement for proof that firewall rule changes were reviewed and approved before implementation, aligning with the principle of separation of duties and change control.
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