A technician has been given a list of requirements for a LAN in an older building using CAT6 cabling. Which of
the following environmental conditions should be considered when deciding whether or not to use plenum-rated
cables?

A.
Workstation models

B.
Window placement

C.
Floor composition

D.
Ceiling airflow condition

Explanation:
In a large building, the ‘plenum’ is the space between floors used to circulate air through the building. This
space is also an ideal place to run computer network cabling. However, in the event of fire in the building, the
network cables can be very hazardous because when they burn, the cable insulation gives off a poisonous
smoke that gets circulated around the building. Furthermore, the burning cables help to spread the fire.
Plenum-rated cables are designed to be cabled through the plenum in a building. Plenum-rated cables are
covered in fire-retardant plastic jacket to avoid the risk of toxic smoke being circulated around the building.