1.4 Wired and Wireless Networks

Small geographic area. All the hardware for the LAN is owned by the organisation using it. Wired with UTP cable, fibre optic cable or wireless using routers and Wi-Fi access points.

• WAN

• WiFi

• LAN

• DNS

Large geographic area. Infrastructure is hired from telecommunication companies who own and manage it. Connected with telephone lines, fibre optic cables or satellite links.

• WAN

• WiFi

• LAN

• DNS

A client makes requests to the server for data and connections. A server controls access and security to one shared file store. A server manages access to the internet, shared printers and email services. A server runs a backup of data.

• Stand alone

• Peer-to-Peer Network

• LAN

• Client-Server Network

All computers are equal. Computers

serve their own files to each other. Each computer is responsible for its own

security and backup. Computers usually have their own printer.

• Stand Alone

• Peer-to-Peer Network

• LAN

• Client-Server Network

A single computing device not

connected to any other on a network, either wired or wireless.

• Stand Alone

• Peer-to-Peer Network

• LAN

• Client-Server Network

A networking hardware device that allows a Wi-Fi device to connect to a wired network.

• Router / Switch

• WAP (Wireless Access Point)

• NIC (Network Interface Controller)

• Transmission Media

In packet-switched networks such as

the internet, this is a device or, in some cases, software on a computer,

that determines the best way for a packet to be forwarded to its destination.

• Router / Switch

• WAP (Wireless Access Point)

• NIC (Network Interface Controller)

• Transmission Media

A computer hardware component that connects a computer to a computer network.

• Router / Switch

• WAP (Wireless Access Point)

• NIC (Network Interface Controller)

• Transmission Media

The physical media over which data

is transmitted, e.g. twisted copper cable, fibre optic etc.

• Router / Switch

• WAP (Wireless Access Point)

• NIC (Network Interface Controller)

• Transmission Media

DNS

• Domain Network System

• Domain Network Setup

• Domain Name System

• Detailed Name Server