Which of the following describes the function of an injector?
Correct Answer: B
A PoE injector is used to add power to an Ethernet cable, enabling the cable to deliver both power and data. This is crucial when connecting to PoE-enabled devices like IP cameras or wireless access points that are far from power outlets. Reference: "CompTIA A+ Complete Practice Tests" by Jeff T. Parker - Chapter 10, Question 77, page 585.
