CompTIA Network+ (N10-007) — Question 5

A technician is setting up a direct connection between two older PCs so they can communicate but not be on the corporate network. The technician does not have access to a spare switch but does have spare Cat 6 cables, RJ-45 plugs, and a crimping tool. The technician cuts off one end of the cable. Which of the following should the technician do to make a crossover cable before crimping the new plug?

Answer options

• A. Reverse the wires leading to pins 1 and 2
• B. Reverse the wires leading to pins 1 and 3
• C. Reverse the wires leading to pins 2 and 3
• D. Reverse the wires leading to pins 2 and 4

Correct answer: B

Explanation

The correct answer is B because, to create a crossover cable, you need to reverse the transmission and receive pairs. Pins 1 and 3 correspond to the transmit and receive functions, respectively, on a standard Ethernet connection, allowing the two PCs to communicate directly. The other options do not correctly configure the necessary pairs for crossover connections.