Question: Which type of cable might be required for installation in a drop ceiling?
Disambiguated questions and answers: question: What general type of cable might be required for installation in a drop ceiling?
What type of cable might be required for networking or telephone installation in a drop ceiling?
answer: LSZH
special low-smoke and low-toxicity wire insulation
plenum
plenum cable
LS0H
Low Smoke Zero Halogen
twisted pair
twisted pair cable
Natural Questions answer: plenum (from the Wikipedia article "Dropped ceiling")