Links between distant racks need more reach. What fits?
Why B is the answer
Optical transceivers and fiber
Optical links reach further than DAC.
In detail
- Optical links reach further than DAC.
- Plan optics in the budget.
Use case
An illustrative scenario, not a real incident.
Links between distant racks exceed copper's reach, so they use transceivers and fiber.
See it in different ways
flowchart LR A["Is it connected to the right port?"] --> B["Compare with the cabling map"] C["Is the signal good?"] --> D["Check link errors"]
mindmap
root((Links))
Short
Direct attach copper
Long
Optical transceivers
Layout
Rail-optimized
Proof
Cabling map
Error countersflowchart LR S0["Transceiver"] --> S1["Fiber"] --> S2["Transceiver"]
Key point: Optics reach further.
Why the other options are wrong
- A. A shared power cable
- Power cables carry no data.
- C. Direct attach copper
- DAC is for short runs.
- D. PCIe extension cables
- Those do not run between racks.