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Exin CDCS Exam - Topic 2 Question 27 Discussion

Smoke sensors must be installed in the computer room. What is the minimum density?
C) 1 per 25 m
A) 1 per 5 m
B) 1 per 10 m
D) 1 per 40 m

Exin CDCS Exam - Topic 2 Question 27 Discussion

Actual exam question for Exin's CDCS exam
Question #: 27
Topic #: 2
[All CDCS Questions]

Smoke sensors must be installed in the computer room. What is the minimum density?

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Suggested Answer: C

NFPA 75 (Standard for IT Equipment Protection) and NFPA 72 (Fire Alarm Code) recommend installing at least one smoke detector per 250 ft (25 m) in IT rooms. This ensures early detection in high-value environments.

A and B are far too dense, exceeding NFPA minimums.

D is too sparse and would not meet early detection requirements.

Therefore, the correct standard density is 1 per 25 m.


by Henriette at Apr 06, 2026, 12:55 PM

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Floyd
2 days ago
I thought it was 1 per 5 m.
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Leonora
7 days ago
It's 1 per 10 m for sure!
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Edwin
12 days ago
1 per 25 m seems way too sparse, right?
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Marleen
17 days ago
Definitely B, that's standard practice.
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Dean
22 days ago
Wait, are you guys sure about that?
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Colby
2 months ago
I thought it was 1 per 5 m.
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Leslie
3 months ago
It's 1 per 10 m for sure!
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Carylon
3 months ago
I vaguely recall that the standard is usually stricter for sensitive areas like computer rooms, so it might be 1 per 5 m.
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Ozell
3 months ago
I’m a bit confused about the minimum density. I thought it was 1 per 25 m, but that seems too sparse for a computer room.
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Barbra
3 months ago
I practiced a similar question last week, and I believe the answer was 1 per 10 m, but I could be mixing it up with fire alarms.
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Cory
3 months ago
I think I remember something about smoke sensor density, but I'm not entirely sure if it's 1 per 10 m or 1 per 5 m.
upvoted 0 times
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