TestOut LabSim A+ Certification Practice Exam

When installing networking cable in the air space between the ceiling and the roof, which type should you use?

1. Indoor cable

2. Shielded cable

3. Plenum cable

4. Outdoor cable

The correct answer is: Plenum cable

When installing networking cable in the air space between the ceiling and the roof, plenum cable is the correct choice due to its specific construction and safety features. Plenum-rated cables are designed to meet strict fire safety standards because they are installed in spaces that can facilitate airflow for heating, ventilation, and air conditioning (HVAC) systems. This type of cable is made with materials that have a lower flame spread and produce less smoke when exposed to fire, which is essential in enclosed spaces that are used for air circulation throughout a building. Using plenum cable helps to ensure that in the event of a fire, the risks of smoke inhalation and fire spread are minimized, making it crucial for compliance with building codes and safety regulations. Other types of cables, such as indoor cables, do not offer the same level of fire resistance and are not appropriate for these air spaces. Shielded and outdoor cables serve different specific purposes; for instance, shielded cables are intended to reduce electromagnetic interference, while outdoor cables are designed for environmental durability but may not meet the fire safety requirements needed for plenum spaces. Thus, plenum cable is the only suitable option for this installation scenario.