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Exin CDCS Exam - Topic 2 Question 26 Discussion

Actual exam question for Exin's CDCS exam
Question #: 26
Topic #: 2
[All CDCS Questions]

A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in telecommunications. What is the overall rating?

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Suggested Answer: A

ANSI/TIA-942 defines that the lowest rating across all four categories determines the overall facility rating. A facility cannot claim a higher overall level unless all subsystems meet or exceed that level.

In this case:

Mechanical = Rated-3

Electrical = Rated-4

Telecommunications = Rated-2

Since telecommunications only meets Rated-2, the overall facility is Rated-2, regardless of higher scores elsewhere.

This ensures that weak areas (like cabling) are not ignored, because they can compromise overall availability.


by Jani at Apr 05, 2026, 12:03 AM

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Fausto
3 days ago
I think it should be Rated-4 since electrical is key!
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Mollie
8 days ago
Overall rating is Rated-2.
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Jina
29 days ago
I wonder if the architectural rating plays a role here? That might make it Rated-4 if it’s prioritized.
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Corinne
1 month ago
I feel like I saw a similar question where the overall rating depended on the weakest link, which could mean Rated-2 again.
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Alishia
1 month ago
I remember something about how electrical ratings can sometimes weigh more heavily, so maybe Rated-4 is correct?
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Junita
1 month ago
I think the overall rating might be the lowest one, so maybe Rated-2? But I'm not completely sure.
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