What is Ethernet?
What is Ethernet?
Ethernet is a
type of cabling that connects multiple computers together. It is a type
of standard used in local networks that defines how signals enable the
communication between computers, routers and hubs.
Ethernet cables connect network devices such as modems,
routers, and adapters. They transmit data using the Ethernet protocol. It is
one of the most popular forms of network cable used on wired networks.
Ethernet cables are also known as RJ-45 cables and are used
in computer networking and deliver data between computers on the internet. The
cable’s port resembles a standard phone cable, although it is roughly twice as
big. Any internet connection in your home or office, other than dial up, use
Ethernet cables to connect to the Internet.
While Internet is a global network, Ethernet is a local area
network (LAN). No computer should be an island. With Ethernet, file sharing and
printer sharing among machines became possible.
Advantages
- Upgradability
- Simplicity of installation
- Connectivity to backbone
- Low cost
- Provides multiple layout (topology) options
- Suits a variety of basic communication and networking needs
Disadvantages
- A single Ethernet cable, like an electric power cord, can extend only limited distances due to their electrical transmission characteristics.
- Difficult to maintain through time.
- Durability limitations.
- Length limitations.
Types of Ethernet Cables
Crossover, Straight Through and Rollover Ethernet Cables.
A crossover cable
is a special type of Ethernet cable specially designed for connecting two
computers to each other. By contrast, most Ethernet cables are designed to
connect one computer to a router or switch.
Rollover Ethernet
cable is used by network technicians to program networking devices like
routers.
Straight Through
Ethernet cable is used to connect “unlike” devices such as hub and a router
(two types of networking devices with very different functions.)
Ethernet cables are physically manufactured in two basic
forms called solid and stranded. Solid Ethernet cables tend to offer better performance and
protection against electrical interference, while stranded cables are less prone to physical cracks and breaks making
them more suitable for travelers and portable devices.
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