What is the OSI model? How to explain and remember its 7 layers
The layers, and what they represent, are as follows: Layer 7: Application. The Application Layer in the OSI model is the layer that is the “closest to the end user”.
What is a network switch and how does it work?
Apr 11, 2024 · A network switch is a physical device that operates at the Data Link layer of the Open Systems Interconnection (OSI) model — Layer 2. It takes in packets sent by devices that are connected to ...
What is IPv6, and why is adoption taking so long? - Network World
Apr 1, 2024 · As of March 2022, according to Google, the IPv6 adoption rate globally is around 34%, but in the U.S. it’s at about 46%. Carrier networks and ISPs have been the first group to start deploying ...
802.11x: Wi-Fi standards and speeds explained | Network World
The big news in wireless is the expected ratification of Wi-Fi 7 (802.11be) by the IEEE standards body early this year. Some vendors are already shipping pre-standard Wi-Fi 7 gear, and the Wi-Fi ...
What is Ethernet? History, evolution and roadmap - Network World
Apr 18, 2022 · The Ethernet protocol connects LANs, WANs, Internet, cloud, IoT devices, Wi-Fi systems into one seamless global communications network. Ethernet is one of the original networking technologies ...
What is a virtual machine, and why are they so useful?
May 3, 2024 · A virtual machine (VM) is software that runs programs or applications without being tied to a physical machine. In a VM instance, one or more guest machines can run on a host computer. Each VM has ...
What is IoT? The internet of things explained | Network World
Feb 27, 2024 · Credit: Thinkstock. The internet of things (IoT) is a catch-all term for the growing number of electronics that aren’t traditional computing devices, but are connected to the internet to send ...
DNS explained: How the Domain Name System works
The Domain Name System (DNS) is one of the foundations of the internet, working in the background to match the names of web sites that people type into a search box with the corresponding IP ...
What is WPA3? And some gotchas to watch out for in this Wi-Fi …
Nov 2, 2018 · The Wi-Fi Alliance has introduced the first major security improvement to Wi-Fi in about 14 years: WPA3. The most significant additions to the new security protocol are greater protection for ...
What is a WAN? Wide-area network definition and examples
Aug 1, 2022 · At its core, a WAN is a network of networks. The Internet itself is a giant WAN, and how you connect to it can be as diverse as through an Ethernet cable, coaxial cable, or a cellular radio signal ...