300-320 · Question #421
One-to-one ratio mapping for access switches close to servers.
The correct answer is A. ToR. Top of Rack (ToR) switching places one access switch at the top of each individual server rack, creating a one-to-one ratio between switches and racks. This minimizes cable runs between servers and their directly connected switch. End of Row (EoR) places a switch at the end of…
Question
One-to-one ratio mapping for access switches close to servers.
Options
- AToR
- BEoR
How the community answered
(36 responses)- A92% (33)
- B8% (3)
Explanation
Top of Rack (ToR) switching places one access switch at the top of each individual server rack, creating a one-to-one ratio between switches and racks. This minimizes cable runs between servers and their directly connected switch. End of Row (EoR) places a switch at the end of a row of racks, aggregating connectivity for multiple racks with longer cable runs. ToR is preferred in high-density data center environments because it reduces latency, simplifies cabling, and keeps the switching hardware physically close to the servers it serves.
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