300-320 Question #606: Real Exam Question with Answer & Explanation

The correct answer is A: easier per rack upgrades. In a Top-of-Rack design, a switch is placed at the top of each rack and servers connect to it with short patch cables (typically 1–2 meters). This yields two key benefits: (A) easier per-rack upgrades, since each rack is a self-contained unit with its own switch that can be upgra

Question

Management has chosen to implement a top-of-the-rack data center design. Which two benefits of moving to this mode? (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

In a Top-of-Rack design, a switch is placed at the top of each rack and servers connect to it with short patch cables (typically 1–2 meters). This yields two key benefits: (A) easier per-rack upgrades, since each rack is a self-contained unit with its own switch that can be upgraded or replaced independently; and (B) decreased cabling costs, because short intra-rack cables replace the long structured cabling runs required by End-of-Row (EoR) designs that route all cables to a central row switch. ToR does not reduce the number of ports in the aggregation layer (D) - it actually requires more uplinks. It also does not reduce the number of switches to manage (E); it increases them compared to EoR.

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