How Do Fiber Optic Couplers Work and How are They Made?
Fiber optic couplers are needed for tapping (monitoring the signal quality) or more complex telecommunication systems which require more than simple point-to-point connections, such as ring architectures, bus architectures and star architectures. More ...
Overview of IEEE 802.11 Wireless Lan Technology
Wireless LAN (WLAN) is a wireless broadband technology that utilizes radio frequency (RF) to transmit and receive data through the air There are two competing RF technologies in the use of Wireless LAN, the IEEE 802.11 standard and proprietary technologies. Both fall under wireless broadband technology. More ...
VPN (Virtual Private Network) headend or Concentrator
A VPN (Virtual Private Network) uses 'tunneling', a process by which secure, encrypted packets are sent over a publicly shared network. More ...
Data Center Networking
In recent years, companies such as Amazon, Google, and Microsoft have built massive data centers, each housing tens to hundreds of thousands of hosts, and concurrently supporting many distinct cloud applications. Each data center has its own data center network that interconnects its hosts and interconnects the data center with the Internet. More ...
Wireless Networks
A wireless LAN (WLAN or WiFi) provides network connectivity by using radio waves rather than cable. Wireless devices can communicate with each other or they can communicate through a wireless access point (WAP) to a wired network. More ...
Routers
Routers are sometimes confused with network hubs, modems, or network switches. However, routers can also provide additional features such as embedded firewall and content filtering software that provides an additional protection from unwanted content and malicious websites. More ...
Trunking, Bonding, Aggregation; What Does it Mean?
Each port on a network switch would be connected to one network device, such as a computer. But to connect a server you need higher bandwidth. For this purpose you could combine multiple Ethernet channels into one. More ...
ISP Multihoming Explained
Multihoming is essentially a method whereby a company can connect to more than one ISP at the same time. The concept was born out of the need to protect Internet access in the event of either an ISP link failure or an ISP internal failure. More ...
The Secret of Maintaining Your Fiber Optic Network
During fiber optic network installation, maintenance, or restoration, it is also often necessary to identify a specific fiber without disrupting live service. This battery powered instrument looks like a long handheld bar and is called fiber identifier or live fiber identifier. More ...
Bluetooth Basics
Bluetooth wireless technology is a specification for a wireless connection that provides links between mobile computers, mobile phones, other portable handheld devices, and connectivity to the Internet. More ...
Multilayer Switch
A network switch operates at layer 2 the OSI model. A multilayer switch also works at layer 3 or higher, all the way up to layer 6 of the OSI model. More ...
The Difference Between a Broadcast Domain and a Collision Domain
One of the most confusing things to understand in computer networking is the difference between a broadcast domain and a collision domain. Much of the confusion results because of the operation of a network switch. More ...
Proxy Servers
With a proxy server, instead of connecting directly to a server that can fulfill a requested resource, such as a file or web page, the client directs the request to the proxy server, which evaluates the request and performs the required network transactions. More ...
