Which statements are true about active and passive cooling systems? (Select two)

A.
A passive cooling system uses only heat sinks.

B.
An active cooling system uses only heat sinks.

C.
An active cooling system adds devices such as fans.

D.
A passive cooling system adds devices such as fans.

Explanation:
Industry Standard Architecture – Student Guide 1 – Page 26
A passive cooling system utilizes heat sinks and natural convection. Heat sinks are blocks of metal
that absorb heat and have fins or ridges to dissipate the heat.
An active cooling system adds mechanical means. Fans are added to blow cooling air across or
through the heat sink and other interior parts.