Ring color for first pair in four-pair UTP cable?

Ring color for first pair in four-pair UTP cable?

• A. Blue and White
• B. Green and White
• C. Orange and White
• D. Brown and White

Answer: (A)

In a four-pair UTP cable, each pair uses a solid color and its matching white-striped wire. The first pair is the blue pair, so its two conductors are blue and white (the white wire has a blue stripe). That’s why the ring color for the first pair is described as blue and white. The other pairs follow the same pattern with orange/white-orange, green/white-green, and brown/white-brown.

In a four-pair UTP cable, each pair uses a solid color and its matching white-striped wire. The first pair is the blue pair, so its two conductors are blue and white (the white wire has a blue stripe). That’s why the ring color for the first pair is described as blue and white. The other pairs follow the same pattern with orange/white-orange, green/white-green, and brown/white-brown.