What is a network?

A computer network or network is when two or more devices (one of which must be a server and one of which must be a computer) are connected together, and are able to execute actions initiated at the computer, completed by the server and displayed back on the computer. There are a variety of network options which can be identified by the equipment, location, function or scale.

What is a "local area network"?

A local area network or a LAN is a type of network defined by it’s physical locations. This is only for the limited geographical area so it is “local” devices only. The benefits are higher data transfer rates and the reduced/eliminated need for outside telecommunication lines.

What is a wide area network?

A wide area network or WAS is a type of network defined by it’s physical locations. This is for a greater geographical areas so it is a “wide” range of devices and locations. The benefits are a channel that combines many types of media and the power of existing carrier technologies.

What is a backbone network?

A backbone network connects separate LANs or other subnetworks. This is to connect WANs also, and can commonly be seen connecting core routers to WAN to the internet. The backbone can usually handle more than the networks connected to it. The benefits are that you can connect networks in the same building, different building, or another WAN further away.

What is a virtual private network?

A virtual private network or VPN is a subset of a larger that exists between nodes in open connections instead of physical wires. This can be used to add a layer of security and also separate different user communities, creating virtually private networks. The benefits are the security options, and no need for expensive wiring or new hardware.

What is an intranet?

An intranet is a part of a computer network, which is usually seen in a LAN. This part of the network is usually controlled by a single admin, who closes access to the intranet except to certain approved entities. There can be a server associated with the intranet. The benefits are the privacy and the speed for all internal communications.

What is a router?

A router is a device used to internetwork by forwarding packages of information, called “packets”, by processing information provided on the packet. Routers use a system of organization to determine where the information goes called routing tables. The routers can also send along packets to a black hole, or null space, where no further processing is done.

What is a firewall?

A firewall is an element of security. It acts as a barrier between the network and the outside internet. The firewall will allow in recognized devices and users, and reject or challenge those which are not. A firewall protects it’s devices from malware, and other cyber attacks.

What is an IP address?

A unique numerical code assigned to each and all devices on a network which are accessing the internet. The IP address acts both as an identifying value for the device and a location value for the address of the device. The name indicates what you are seeking, the address tells you where it is, and a route or router tells you how to get there.

Whats the difference between a public and private ip address?

A public address is a global location and name based off the standard. A private IP address isn’t included in this classification because it is a local location and name based off the private standard and so packets addressed to them from the internet cannot be transmitted without a proxy server or gateway.

How does a network help you do what you do?

A network helps me do what I do by moving my requests from my computer/device to the internet and back. When I create a webpage, my network helps me get to where I want to upload it, then moves that webpage from my computer to the server, then allows me to view that webpage. It helps me visit the validations services where I can input my code and then tell me if my webpage will work correctly. It helps my client see the webpage I’ve been working on, either during development via an extranet or after release on a browser. A network makes web development possible by moving information from device to device.