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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?

Show Suggested Answer Hide Answer
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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Coral
5 hours ago
D) 1 per 40 m? That's risky! A) is the way to go.
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Tamar
5 days ago
I feel like C) 1 per 25 m is too sparse.
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Lelia
11 days ago
But what if there's a fire? A) is better!
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Mollie
16 days ago
B) 1 per 10 m seems reasonable too. Less clutter.
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Julio
21 days ago
I agree, A) makes sense. More coverage!
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Stevie
26 days ago
I think it's A) 1 per 5 m. Safety first!
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Keneth
1 month ago
Totally agree, 1 per 10 m is the standard!
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Rene
1 month ago
Wait, are we really sure about these numbers?
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Avery
1 month ago
1 per 25 m seems too sparse, right?
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Floyd
2 months ago
I thought it was 1 per 5 m.
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Leonora
2 months ago
It's 1 per 10 m for sure!
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Edwin
2 months ago
1 per 25 m seems way too sparse, right?
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Marleen
2 months ago
Definitely B, that's standard practice.
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Dean
2 months ago
Wait, are you guys sure about that?
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Colby
4 months ago
I thought it was 1 per 5 m.
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Leslie
4 months ago
It's 1 per 10 m for sure!
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Carylon
4 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
5 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
5 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
5 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.
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