Question

you are installing network cabling in the air - space between the ceiling and the roof of a building. the cabling needs to be fire - resistant. which type of cabling should you use?
stp
multi - mode fiber
plenum
pvc

Explanation:

Plenum - rated cables are used in air - handling spaces like the area between the ceiling and the roof as they are fire - resistant and emit less toxic smoke when burned. STP (Shielded Twisted - Pair) is a type of copper cable mainly for reducing electromagnetic interference. Multi - mode fiber is for high - speed data over short distances and not specifically for fire - resistance in air spaces. PVC (Polyvinyl Chloride) is a common cable jacket material but non - plenum PVC can release toxic fumes in case of fire in air spaces.

Answer:

Plenum