You are the network administrator for your company. You wanted to connect the host computers to the
switches.
Which cable should you use to ensure the connectivity?

A.
Straight-through cable

B.
Rollover cable

C.
Crossover cable

D.
Serial cable

Explanation:
A straight-through cable is a normal four-pair cable with the same order of pin configuration on both ends.
These are usually used to connect a computer to the switch or hub’s Ethernet ports. The following table shows
the pin layout of a straight-through cable:

A rollover cable, also known as rolled cable or Cisco console cable, is used to connect a computer terminal to
the console port of a router. The cable pin order at one end of the cable is the reverse of the order at another
end. Pin 1 is connected to pin 8, pin 2 to pin 7, and so on.
A crossover cable is used to connect two similar devices such as a computer to computer or a switch to a
switch, and a computer to a router’s Ethernet port.
A serial cable is used on a router’s wide area network (WAN) interface to connect to the serial ports. Cisco
serial cables generally have a male DB-25 connector on one end and a female DB-25 connector on the other.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Troubleshoot interface and cable issues (collisions, errors, duplex, speed)

Cisco > Product Support > End-of-Sale and End-of-Life Products > Cisco 7000 Series Routers >
Troubleshooting TechNotes > Cabling Guide for Console and AUX Ports > Document ID: 12223