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What is a Hub?

There are two primary types of hubs in the computing world: 1) network hubs and 2) USB hubs. 1. Network hub A network hub is a device that allows multiple computers to communicate with each other over a network. It has several Ethernet ports that are used to connect two or more network devices together. Each computer or device connected to the hub can communicate with any other device connected to one of the hub's Ethernet ports. Hubs are similar to switches, but are not as "smart." While switches ... Read more

What is 802.11ac?

802.11ac (also called 5G Wi-Fi) is the fifth generation of Wi-Fi technology, standardized by the IEEE. It is an evolution of the previous standard, 802.11n, that provides greater bandwidth and more simultaneous spatial streams. This allows 802.11ac devices to support data transfer rates that are several times faster than those of 802.11n devices. Unlike previous Wi-Fi standards, which operated at a 2.4 GHz frequency, 802.11ac operates exclusively on a 5 GHz frequency band. This prevents interference with common 2.4 GHz devices, such as cordless phones, baby monitors, and older wireless routers. Computers and ... Read more

What is a Backbone?

Just like the human backbone carries signals to many smaller nerves in the body, a network backbone carries data to smaller lines of transmission. A local backbone refers to the main network lines that connect several local area networks (LANs) together. The result is a wide area network (WAN) linked by a backbone connection. The Internet, which is the ultimate wide area network, relies on a backbone to carry data over long distances. The Internet backbone consists of several ultra-high bandwidth connections that link ... Read more

What is CDMA?

Stands for "Code Division Multiple Access." CDMA is a wireless transmission technology that was developed during World War II by the English allies to avoid having their transmissions jammed. After the war ended, Qualcomm patented the technology and made it commercially available as a digital cellular technology. Now CDMA is a popular communications method used by many cell phone companies. Unlike the GSM and TDMA technologies, CDMA transmits over the entire frequency range available. It does not assign a specific frequency to ... Read more
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