CompTIA Network+ (N10-008) — Question 746

A network administrator will be running Ethernet cables through raised ceilings. Which of the following types of Ethernet cables is the safest solution?

Answer options

• A. Shielded
• B. Plenum
• C. Unshielded
• D. Riser

Correct answer: B

Explanation

Plenum-rated cables are designed to be used in spaces with airflow for heating and air conditioning, reducing fire hazards by using materials that emit less smoke and are less flammable. Shielded and unshielded cables do not meet the same safety standards for these environments, while riser cables are intended for vertical spaces between floors, not horizontal installations in ceilings.