Factors that affect network performance
Bandwidth Bandwidth refers to the maximum data transfer rate of a network connection. Bandwidth is measured in bits per second (bps, Mbps, Gbps). Insufficient bandwidth […]
Networks and communications
WiFi versions
WiFi, otherwise known at the 802.11 protocol, has had 18 versions. This page covers just four and compares the frequencies, theoretical bitrate, and security aspects. […]
DHCP and DNS
Dynamic Host Configuration Protocol (DHCP) Every device on a network needs a unique IP address. While these addresses can be manually assigned that is not […]
IPv4 and IPv6
IP stands for Internet Protocol. The v in IPv4 and IPv6 is Version. We use IPv4 and IPv6 for identifying nodes on a network, each […]
Error detection and correction
When sending data over a network there is a possibility of interference and therefore errors occurring in the data. Here are two methods of detecting […]
TCP/IP Model
Transmission Control Protocol / Internet Protocol (TCP/IP) is a set of communication protocols which specify how data is transferred across networks (and therefore the internet). […]
Encryption
Transferring data over networks is inherently insecure. The traffic passes through multiple routers and if any of those routers are compromised by a hacker or […]
Communication Protocols
Protocols are agreed forms of communication. Computer networks require protocols to transfer different types of data reliably and efficiently – and sometimes securely – most protocols […]
Transmission media
Transmission media (or medium) refers to any method of network connection, whether it is wired or wireless. They all transfer packets of data using different […]
Networking components
These pieces of equipment are just some of the network components required to create computer communication networks. You need to know what they are […]