IT Explained
Clear, comprehensive explanations of IT terms, cybersecurity concepts and technologies for professionals — written by experts, for experts.
What is IPv8? Definition, How It Works & Use Cases
IPv8 is a proposed IETF draft that aims to extend IPv4's lifespan through advanced address management. Learn how IPv8 works and its potential impact on networking.
What is QoS? Definition, How It Works & Use Cases
QoS (Quality of Service) prioritizes network traffic to ensure critical applications get the bandwidth they need. Learn how QoS works and best practices.
What is MPLS? Definition, How It Works & Use Cases
MPLS (Multiprotocol Label Switching) is a network routing protocol that uses labels to forward packets efficiently. Learn how MPLS works, its benefits, and enterprise use cases.
What is OSPF? Definition, How It Works & Use Cases
OSPF (Open Shortest Path First) is a link-state routing protocol that finds the best paths in networks. Learn how OSPF works, its areas, and implementation.
What is BGP? Definition, How It Works & Use Cases
BGP (Border Gateway Protocol) is the routing protocol that powers the internet. Learn how BGP works, autonomous systems, and best practices for network engineers.
What is IPv6? Definition, How It Works & Use Cases
IPv6 is the latest Internet Protocol version using 128-bit addresses to solve IPv4 exhaustion. Learn how IPv6 works, transition strategies, and implementation best practices.
What is iSCSI? Definition, How It Works & Use Cases
iSCSI (Internet Small Computer System Interface) enables block-level storage access over IP networks. Learn how iSCSI works, its benefits, and implementation best practices.
What is NAS? Definition, How It Works & Use Cases
NAS (Network Attached Storage) provides centralized file storage accessible over a network. Learn how NAS works, its benefits, and best practices for businesses.
What is a Network Switch? Definition, How It Works & Use Cases
A network switch is a Layer 2 device that connects devices within a LAN using MAC addresses. Learn how switches work, VLAN configuration, and best practices.
What is a Router? Definition, How It Works & Use Cases
A router is a network device that forwards data packets between networks. Learn how routers work, routing protocols like BGP and OSPF, and best practices.
What is Fiber Optics? Definition, How It Works & Use Cases
Fiber optics uses light pulses through glass cables for ultra-fast data transmission. Learn how fiber optic technology works, types, and applications.
What is a Proxy Server? Definition, Types & Use Cases
A proxy server acts as an intermediary between clients and servers, providing security, caching, and access control. Learn how proxy servers work and their key benefits.
What is DHCP? Definition, How It Works & Use Cases
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and network settings to devices. Learn how DHCP works, its benefits, and best practices.
What is DNS? Definition, How It Works & Use Cases
DNS (Domain Name System) translates domain names into IP addresses, enabling internet navigation. Learn how DNS works, its components, and best practices.
What is VPN? Definition, How It Works & Use Cases
VPN (Virtual Private Network) creates secure, encrypted connections over the internet. Learn how VPNs work, protocols like WireGuard and IPSec, and best practices.
What is a Server? Definition, Types & Use Cases
A server is a computer system that provides services to other devices over a network. Learn about server types, how they work, and best practices for 2026.
What is SD-WAN? Definition, How It Works & Use Cases
SD-WAN (Software-Defined Wide Area Network) simplifies branch connectivity and optimizes network performance. Learn how SD-WAN works and its benefits.
What is an IP Address? Definition, Types & How It Works
An IP address is a unique identifier for devices on a network. Learn about IPv4, IPv6, types of IP addresses, and how network addressing works.
What is HTTP? Definition, How It Works & Use Cases
HTTP (HyperText Transfer Protocol) is the foundation of web communication. Learn how HTTP works, its evolution to HTTPS, and best practices for developers.
What is Bandwidth? Definition, How It Works & Use Cases
Bandwidth measures the maximum data transfer capacity of a network connection. Learn how bandwidth works, measurement units, and optimization strategies.