The answer is that the schedule object only permits traffic Monday through Friday from 09:00 to 17:00, so Saturday falls entirely outside that window. This is the most direct reason a firewall policy fails outside scheduled hours: even when the policy itself is enabled, the attached schedule object acts as a time-based gatekeeper. If the current time does not fall within the schedule’s defined range, the firewall will not match the traffic to that policy, effectively denying access. On the Fortinet NSE 4 exam, this scenario tests your understanding of how schedule objects interact with firewall policies—a common trap is assuming an enabled policy always applies, when in fact the schedule must also be active. A useful memory tip is to think of the schedule as a “time lock”: the policy is the door, but the schedule is the lock that only opens during business hours.
NSE4 Firewall Policies and NAT Practice Question
This NSE4 practice question tests your understanding of firewall policies and nat. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 administrator configures a firewall policy with a schedule object that is set to 'Available: Mon-Fri 09:00-17:00'. At 10:00 AM on Saturday, users report they cannot access the resource. The administrator checks the policy list and sees the policy is enabled. What is the MOST likely reason?
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 schedule object only allows traffic on weekdays, and Saturday is not included
The schedule object is configured to allow traffic only from Monday to Friday, 09:00-17:00. Since Saturday is outside this range, the firewall policy will deny or not match the traffic, even though the policy is enabled. This is the most direct and likely reason for the access failure.
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 FortiGate's system time is incorrect
Why it's wrong here
While possible, the most direct reason is that the schedule explicitly excludes Saturday.
✗
A deny policy with higher priority is blocking the traffic
Why it's wrong here
Without evidence of another policy, the schedule is the most likely cause.
✗
The schedule object is not correctly applied to the policy
Why it's wrong here
The admin applied the schedule; the issue is that Saturday is outside the defined days.
✓
The schedule object only allows traffic on weekdays, and Saturday is not included
Why this is correct
The schedule 'Mon-Fri 09:00-17:00' does not include Saturday, so the policy is inactive on Saturday. Traffic then hits the implicit deny.
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may overlook the schedule's day-of-week restriction and assume the policy is simply 'enabled' means it should work, failing to recognize that a schedule object can limit traffic to specific days and times, making the policy inactive outside those windows.
Detailed technical explanation
How to think about this question
FortiGate schedule objects are evaluated based on the firewall's system time and the configured time range. When a policy's schedule does not match the current time, the policy is effectively treated as if it were disabled for that period, and traffic is evaluated against the next matching policy (or implicitly denied if no match is found). This behavior is defined in the FortiGate's firewall policy lookup logic, where schedule is one of the mandatory matching criteria before any action is taken.
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 administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Firewall Policies and NAT — This question tests Firewall Policies and NAT — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The schedule object only allows traffic on weekdays, and Saturday is not included — The schedule object is configured to allow traffic only from Monday to Friday, 09:00-17:00. Since Saturday is outside this range, the firewall policy will deny or not match the traffic, even though the policy is enabled. This is the most direct and likely reason for the access failure.
What should I do if I get this NSE4 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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