In the ToR or middle of the rack cabling design, it is important to know (Select two)

Question

Options

• AThe number of fiber strands are pulled to each row
• BThe fire regulations
• CThe airflow direction
• DThe connectors the patch panels use

• A
  90% (53)
• B
  7% (4)
• C
  3% (2)

Explanation

In a Top-of-Rack (ToR) or middle-of-rack cabling design, knowing the number of fiber strands pulled to each row (A) is critical because it determines whether you have sufficient bandwidth and redundancy for all devices in that row - under-provisioning fiber means costly re-pulls later. Knowing the connectors the patch panels use (D) is equally essential because mismatched connector types (LC, SC, MPO, etc.) will prevent proper termination and require adapter solutions that add cost and signal loss.

Fire regulations (B) are a general facility/compliance concern that applies to all data center work, not something specific to choosing a ToR cabling topology. Airflow direction (C) matters for thermal management and rack layout but is independent of how cabling is structured between racks and patch panels.

Memory tip: Think "Count and Connect" - you must count your fiber strands (A) and verify your connector types (D) before finalizing any ToR design. These two factors directly determine whether your physical layer will actually work as planned.

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