Which of the following copper cable types should be chosen to run gigabit speeds through a
dropped ceiling that returns airflow?

A.
Non-Plenum CAT5

B.
Non-Plenum CAT5e

C.
Plenum CAT5

D.
Plenum CAT5e

Explanation:
Cat 5e is a twisted pair cable for carrying signals. This type of cable is used
in structured cabling for computer networks such as Ethernet. The cable standard provides
performance of up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet),
and 1000BASE-T (Gigabit Ethernet).