To connect a switch or hub to a router or PC, which cable should be used?

To connect a switch or hub to a router or PC, which cable should be used?

• A. Crossover cable
• B. Straight-through cable
• C. Fiber optic
• D. Coaxial

Answer: (B)

The main idea here is how Ethernet cables wire the pins and what each device expects when they connect. A straight-through cable keeps the same pinout on both ends, so the transmit pins of one device line up with the receive pins of the other. That alignment is exactly what you want when connecting a switch or hub to a router or a PC, because you’re joining different types of devices and need their communication paths to match correctly. Cross-over cables swap those pairs, which used to be needed when connecting similar devices directly (like PC to PC or switch to switch) so their TX and RX lines line up. Fiber optic and coaxial cables aren’t the standard copper Ethernet option for this kind of connection in typical setups; they’re used in different contexts and require different transceivers and equipment. So, a straight-through cable is the best choice for connecting a switch or hub to a router or PC.

The main idea here is how Ethernet cables wire the pins and what each device expects when they connect. A straight-through cable keeps the same pinout on both ends, so the transmit pins of one device line up with the receive pins of the other. That alignment is exactly what you want when connecting a switch or hub to a router or a PC, because you’re joining different types of devices and need their communication paths to match correctly.

Cross-over cables swap those pairs, which used to be needed when connecting similar devices directly (like PC to PC or switch to switch) so their TX and RX lines line up. Fiber optic and coaxial cables aren’t the standard copper Ethernet option for this kind of connection in typical setups; they’re used in different contexts and require different transceivers and equipment.

So, a straight-through cable is the best choice for connecting a switch or hub to a router or PC.