Factors that affect network performance
Bandwidth Bandwidth is the maximum data transfer rate of a network connection over a period of time. Bandwidth is measured in bits per second (bps, […]
Networks and communications
Methods to ensure the security of networks
Firewalls See firewall Anti-virus software Anti-virus software is utility software that protects computer systems from many different types of malware listed here. Password and Network […]
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 […]
Network security
Network security can be compromised by the following: Denial of service An attacker will flood a network resource with network traffic with the aim to […]
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 […]