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”.
Network World | From the data center to the edge
Oct 7, 2024 · Network World provides news and analysis of enterprise data center technologies, including networking, storage, servers and virtualization.
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 ...
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 Wi-Fi and why is it so important? | Network World
Jan 3, 2023 · Wi-Fi is a blanket term for multiple technologies that use the IEEE 802.11 communications standards to create local area networks or LANs. Wi-Fi-enabled products use radio waves to transmit data ...
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 MU-MIMO, and why is it essential for Wi-Fi 6 and 6E?
Mar 3, 2022 · Summing up, the addition of OFDMA and uplink MU-MIMO means that Wi-Fi 6 and 6E are a whole lot faster than Wi-Fi 5 systems, which is particularly helpful for very dense environments, such as ...
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 ...
DHCP defined and how it works - Network World
Mar 14, 2022 · DHCP is an under-the-covers mechanism that automates the assignment of IP addresses to fixed and mobile hosts that are connected wired or wirelessly. When a device wants access to a network that ...