The advantage of using plenum cable for twisted- pair cable is it is "Fire resistant"
<u>Explanation:</u>
Plenum cable is a cable that is used in plenum spaces of buildings. These cables have fire resistance characteristic with low smoke. These cables are self extinguishing, and never re-ignite. They require less space for installation and allows space for air circulation to be used by the HVAC system. Twisted-pair, coaxial, HDMI and DVI variants of cable are manufactured in the plenum version. Plenum cable is mandatory to be fixed in any "air handling" area.
Answer:
B:2 should be the first answer
C: 14 the second
I am not sure what the 'following's are
but it should result the sum of all cells between and including C5 and C18.
