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GIAC GPEN Exam - Topic 10 Question 85 Discussion

Which of the following nmap switches is used to perform NULL scan?
A) -sN
B) -sO
C) -sU
D) -sP

GIAC GPEN Exam - Topic 10 Question 85 Discussion

Actual exam question for GIAC's GPEN exam
Question #: 85
Topic #: 10
[All GPEN Questions]

Which of the following nmap switches is used to perform NULL scan?

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Suggested Answer: A

by Jolanda at May 06, 2026, 01:30 AM

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Margret
2 days ago
Agreed, -sN is the right one!
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Cathrine
7 days ago
It's definitely -sN for NULL scan.
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Edelmira
12 days ago
I’m pretty sure -sP is for ping scans, so that rules it out. I think it’s definitely -sN for NULL scans.
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Sunny
2 months ago
I’m a bit confused; I thought -sO was related to something else. Wasn’t that for IP protocol scanning?
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Hubert
2 months ago
I remember we did a question about nmap scans, and I feel like -sN was mentioned as the one for NULL scans.
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Azalee
2 months ago
I think the NULL scan switch is -sN, but I’m not entirely sure. It sounds familiar from our practice sessions.
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