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?

A-sN

B-sO

C-sU

D-sP

Show Suggested Answer

Suggested Answer: A

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

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Bobbye

3 days ago

I feel confident about this one. A is the answer!

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Malcolm

8 days ago

I remember learning about this. Definitely A) -sN.

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Gussie

13 days ago

Nah, -sO is for other scans. Stick with A.

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Marlon

19 days ago

I’m not sure. What about B) -sO?

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Janessa

24 days ago

Yeah, I agree. NULL scan is stealthy.

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Felicitas

29 days ago

I think it's A) -sN. Feels right.

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Laila

1 month ago

I didn't know that! NULL scan sounds interesting.

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Claudia

1 month ago

Nope, -sP is for ping scans, not NULL.

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Johanna

1 month ago

Wait, are you sure? I thought it was -sO.

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Margret

2 months ago

Agreed, -sN is the right one!

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Cathrine

2 months ago

It's definitely -sN for NULL scan.

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Edelmira

2 months 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

4 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

4 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

4 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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