3.1.1+Different+Types+of+Network

**LAN - Local Area Network**
- Client computers, or workstations are regular computers that are operated by the users. - Servers are extremely powerful computers that provide services for the client computers on the network like providing file storage, sharing hardware, controlling who can access the network and sharing internet connections. - A network hub is quite a simple broadcasting device that does - A switch is much more intelligent than a hub as when it receives messages, it checks who it is addressed to and only sends it to that specific computer.not manage the traffic coming through it. - A router is a device that forwards data packets between computer networks.



**WLAN - Wireless Local Area Network**
A local area network where the devices are connected wirelessly. - A storage area network is a type of local area network that is designed to handle large data transfers. A SAN typically supports data storage, retrieval and replication on business networks using high-end servers, multiple disk arrays and Fibre Channel interconnection technology.
 * SAN - Storage Area Network**

**VLAN - Virtual Local Area Network**
- A VLAN is a logical opposed to a physical group of computers that is defined by software. A VLAN allows groups of computers to be on the same LAN even if they are in different physical locations.

**Intranet**
- An intranet is a local or restricted communications network. It is a private network that is created using World Wide Web software.

**Extranet/VPN**
- An extranet is essentially an intranet that is mapped onto the public Internet or some other transmission system that is not accessible by the general public, but is managed by more than one company´s administrators.



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