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300-320 · Question #610
300-320 Question #610: Real Exam Question with Answer & Explanation
The correct answer is A: easier per rack upgrades. Top-of-rack (ToR) design places a switch inside each rack, which simplifies individual rack upgrades and reduces the length of copper/fiber runs to the aggregation layer.
Question
Management has chosen to implement a top-of-the-rack data center design. Which two benefits of moving to this model are true? (Choose two.)
Options
- Aeasier per rack upgrades
- Bdecreased cabling costs
- Cdirectly connected racks in the row
- Dfewer ports required in the aggregation
- Efewer switches to manage
Explanation
Top-of-rack (ToR) design places a switch inside each rack, which simplifies individual rack upgrades and reduces the length of copper/fiber runs to the aggregation layer.
Common mistakes.
- C. ToR does not directly connect adjacent racks; racks connect upward to aggregation or spine switches, not laterally to each other.
- D. ToR increases port requirements in the aggregation layer because every ToR switch needs uplinks, whereas a centralized model consolidates those connections.
- E. ToR increases the total number of switches to manage because each rack requires its own dedicated switch rather than sharing a fewer number of centralized switches.
Concept tested. Top-of-rack data center access layer design
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