TestOut LabSim A+ Certification Practice Exam

What is the significance of the term "plenum rated" in networking cables?

1. It indicates that the cable is thicker and more durable

2. It means the cable can be run in air ducts and spaces

3. It signifies that the cable supports higher bandwidths

4. It denotes the color of the cable insulation

The correct answer is: It means the cable can be run in air ducts and spaces

The term "plenum rated" refers specifically to cables that are designed to be installed in plenum spaces, which are areas in buildings that facilitate airflow for heating, ventilation, and air conditioning (HVAC) systems. These areas often include the spaces above ceilings or below floors, where air circulates to maintain temperature and ventilation. Plenum rated cables have a special type of insulation that is resistant to flames and generates low levels of smoke when exposed to fire. This designation is crucial for building safety codes and standards, as it minimizes the risk of fire spreading through the HVAC systems. Using non-plenum rated cables in these spaces could lead to hazardous situations if a fire were to occur, as the materials could burn rapidly and release toxic smoke. The other options do not accurately represent the significance of "plenum rated": thicker cables do not necessarily imply plenum rating, bandwidth support is related to the technology of the cable itself rather than the insulation, and color of cable insulation is unrelated to its plenum rating.