A data network, is a digital telecommunications network which allows a redistribution point to share resources. In computer networks, computing devices exchange data with each other using connections (data links) between distribution points. These data links are established with a cable media which could be copper wires or fibre cable optics, or wireless media such as WIFI.
A network switch is a small hardware device that centralizes communications among multiple connected devices in a single local area network (LAN). Ethernet switches are the most common form of a switch.
Wireless fibre refers to the combined use of both optical and wireless communication to provide tlecommunication to geographically distant end points. The fibre spans long distances whereas wireless carrries a signal for a short distance
Network redundancy is a communications pathway protocol that has additional links in order to connect all distribution points in case a certain link drops. This is to minimise the downtime a website may get from failure.
A firewall is a necessary function for any network as it is the security to all network traffic. Firewalls are categorised as either network firewalls or host-based firewalls, and filter traffic with a set of security rules and by-rules.
Wireless networks refer to a wireless data connection between network nodes and is a cheaper option as it reduces the costs in sourcing copper or fibre optic cables and connections to the home or the office. It requires a hardware router.
A server is a hardware that requests and responds to requests made by any device that runs a server software. The differnce between servers are typically the size and power outputs. Any device that runs server software has this capaility.