Which of the following best describes a repeater?

Which of the following best describes a repeater?
A . A passive device simply used to connect two or more cables. Does not generate or amplify any signals.
B . A device that receives and retransmits a signal out its ports, but does not do any Layer 2 analysis of the data.
C . A device that receives a signal and based on the Layer 2 destination address, makes a decision on which ports the signal should be retransmitted.
D . A device that receives a signal and based on the Layer 3 destination address, makes a decision on which ports the signal should be retransmitted.

Answer: B