Network Types and their Advantages n Disadvantages

While there are several different network types, this article explains the three most popular types for home networks:

Ethernet: the current standard technology and the one used by most businesses; links computers via special cable and a device called a hub. HPNA (home phoneline network adapter): links computers via existing household telephone wiring. Wireless: links computers without wiring, by using radio signals.

The following table lists other properties, advantages and disadvantages of each network type:

	Ethernet	HPNA	Wireless
Hardware needed in addition to network adapter	Ethernet RJ-45 cables and a network hub.	Telephone cables and phone jacks	May need an access point, a piece of hardware that acts as a central transmitter of radio signals between computers. Using an access point allows networking between any two computers on the system and expands the area radio signals are sent.
Advantages	Currently the fastest, most reliable, least costly network technology. Most DSL and cable modems use Ethernet connections.	Easy installation; computers simply plug into ordinary phone jacks.	Mobile; you can move your laptop or desktop computer from room to room while remaining connected to the network.
Disadvantages	Requires cables linking computers or Ethernet wiring (similar to phone wiring) installed in walls.	Requires a phone jack near each computer.	All networked computers must be within a specified distance to communicate with each other. Currently, wireless networks lack some of the capability of networks using physical connections. The cost of an access point is an additional expense to setting up the system.