Which of the following UTP cables uses four pairs of twisted cable and provides transmission
speeds of up to 16 Mbps?

A.
Category 5e

B.
Category 3

C.
Category 5

D.
Category 6

Explanation:

Category 3 type of UTP cable uses four pairs of twisted cable and provides transmission speeds
of up to 16 Mbps. They are commonly used in Ethernet networks that operate at the speed of 10
Mbps. A higher speed is also possible by these cables implementing the Fast Ethernet (100BaseT4) specifications. This cable is used mainly for telephone systems.
Answer option C is incorrect. This category of UTP cable is the most commonly used cable in
present day networks. It consists of four twisted pairs and is used in those Ethernet networks that
run at the speed of 100 Mbps. Category 5 cable can also provide a higher speed of up to 1000
Mbps.

Answer option A is incorrect. It is also known as Category 5 Enhanced cable. Its specification is
the same as category 5, but it has some enhanced features and is used in Ethernets that run at
the speed of 1000 Mbps.
Answer option D is incorrect. This category of UTP cable is designed to support high-speed
networks that run at the speed of 1000 Mbps. It consists of four pairs of wire and uses all of them
for data transmission. Category 6 provides more than twice the speed of Category 5e, but is also
more expensive.