straight-through and cross-over-cable.

Straight-through and Cross-over-cable

Introduction of Ethernet:

Definition: – Ethernet is the communication standard that is widely used in wired technology, ex – LAN. Where it helps to connect multiple devices are share their information etc.

Characteristics: –
• It is mostly used in LAN.
• It supports the data bandwidth 10 to 100 Gbps.
• In OSI model, the Physical layer is it called as Ethernet Technology but in Data Link layer is it called as Ethernet Protocol.

Evolution of Ethernet:

• Standard Ethernet: – Speed up to 10 Mbps.
• Fast Ethernet: – Speed up to 100 Mbps.
• Gigabit Ethernet: – Speed up to 1 Gbps.
• 10 Gigabit Ethernet: – 10 Gbps.

Types of Ethernet Cable: –

Basically, there are 3 types of Ethernet cable –

1) Straight Through Cable: –

A Straight-Through cable is used to connect different types of devices.
Example –
• Switch to Switch
• Switch to Router
• PC to IO Box
• IO Box to Patch Panel

2) Cross Over Cable: –

Cross Over cable is used to connect same types of devices.
Example –
• PC to PC
• Switch to Switch
• Hub to Hub
• Router to Router
• PC to Router

3) Roll Over Cable: –

The Roll Over cable is used to connect a Router or a Switch console port to the computer communication port (COM port).
It is used for Administrative purposes –
• Configuring the devices (Router, Switch).
• Password Breaking.


Q. What is the color code of TIE 568 A?
Ans: –

White / Green
White / Orange
White / Blue
White / Brown

Q. What is the color code of TIE 568 B?
Ans: –

White / Orange
White / Green
White / Blue
White / Brown

Q. What is the difference between Straight Through Cable & Cross Over Cable?
Ans: –

Straight Through CableCross Over Cable
Straight Through Cable is a type of CAT – 5 UTP cable with RJ-45 connectors used at each end.Cross Over Cable is a type of UTP & STP cable with one end used is 568 A and another end used is 568 B configuration.
It is used to connect different types of devices.It is used to connect same type devices.
It is used to connect Switch to PC, Switch to Router etc.It is used to connect PC to PC, Switch to Switch etc.

Q. What is full from TIA/ EIA?
Ans: –

Telecommunications Industry Association (TIA) & Electronic Industries Alliance (EIA).

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