The diagram below shows a campus LAN in a single building. Which of the following connections uses crossover Ethernet cables?
(Choose all that apply)

(A) A
(B) C
(C) D
(D) E
(E) F
(F) G

Answer:

B, C, E are the correct answers. Connections (C, D, F, H) use Crossover Ethernet Cables. A crossover cable is a type of twisted-pair copper wire cable for LANs (local area network) in which the wires on the cable are crossed over so that the receive signal pins on the RJ-45 connector on one end are connected to the transmit signal pins on the RJ-45 connector on the other end. Wires 1 and 3 and wires 2 and 6 are crossed. Crossover cables are used to connect two devices of the same type, e.g. two computers or two switches to each other.