In PoE terminology, the full name of PSU is Power Supply Unit, which refers to the power supply unit, such as the Ethernet interface of the PoE switch.

Question

Options

• ATrue
• BFalse

• A
  19% (7)
• B
  81% (29)

Explanation

Option B is correct because in PoE terminology, the device that delivers power through an Ethernet interface -- such as a PoE switch port -- is called a PSE, which stands for Power Sourcing Equipment, not a PSU. While PSU does stand for Power Supply Unit, this is a general computing term referring to the internal component that converts AC mains power into DC voltage for a computer or device, and it is not a PoE-specific term. The statement incorrectly applies the PSU label to the PoE power-providing role, conflating two separate concepts. Option A is wrong because it accepts a false equivalence between a general hardware term and a protocol-specific one.

Memory tip: In PoE, think "PSE sources power, PD receives power" -- Power Sourcing Equipment (the switch) feeds the Powered Device (the IP camera, phone, etc.). PSU belongs to general computing, not PoE vocabulary.

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