Computer Definition Technically, a computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions that it is given. Today, however, the term is most often used to refer to the desktop and laptop computers that most people use. When referring to a desktop model, the ..
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VLAN Definition Stands for “Virtual Local Area Network,” or “Virtual LAN.” A VLAN is a custom network created from one or more existing LANs. It enables groups of devices from multiple networks (both wired and wireless) to be combined into a single logical network. The result is a virtual LAN that can be administered like a physical local area network. In ..
DSL Definition Stands for “Digital Subscriber Line.” DSL is a communications medium used to transfer digital signals over standard telephone lines. Along with cable Internet, DSL is one of the most popular ways ISPs provide broadband Internet access. When you make a telephone call using a landline, the voice signal is transmitted using low frequencies from 0 Hz to 4 kHz. This range, called ..
Bluetooth Definition This wireless technology enables communication between Bluetooth-compatible devices. It is used for short-range connections between desktop and laptop computers, PDAs (like the Palm Pilot or Handspring Visor), digital cameras, scanners, cellular phones, and printers. Infrared once served the same purpose as Bluetooth, but it had a number of drawbacks. For example, if there ..
Access Point Definition An access point is a device, such as a wireless router, that allows wireless devices to connect to a network. Most access points have built-in routers, while others must be connected to a router in order to provide network access. In either case, access points are typically hardwired to other devices, such as network switches or ..
IEEE Definition Stands for the “Institute of Electrical and Electronics Engineers” and is produced “I triple E.” The IEEE is a professional association that develops, defines, and reviews electronics and computer science standards. Its mission is “to foster technological innovation and excellence for the benefit of humanity.” The history of the IEEE dates back to the 1800s, ..
Wi-Fi Definition Wi-Fi is a wireless networking technology that allows computers and other devices to communicate over a wireless signal. It describes network components that are based on one of the 802.11 standards developed by the IEEE and adopted by the Wi-Fi Alliance. Examples of Wi-Fi standards, in chronological order, include: 802.11a 802.11b 802.11g 802.11n 802.11ac Wi-Fi is the standard way ..
LAN Definition Stands for “Local Area Network” and is pronounced “lan.” A LAN is a network of connected devices that exist within a specific location. LANs may be found in homes, offices, educational institution, or other areas. A LAN may be wired, wireless, or a combination of the two. A standard wired LAN uses Ethernet to connect devices together. Wireless LANs ..
WAN Definition Stands for “Wide Area Network.” It is similar to a Local Area Network (LAN), but it’s a lot bigger. Unlike LANs, WANs are not limited to a single location. Many wide area networks span long distances via telephone lines, fiber optic cables, or satellite links. They can also be composed of smaller LANs ..
DNS Definition Stands for “Domain Name System.” Domain names serve as memorizable names for websites and other services on the Internet. However, computers access Internet devices by their IP addresses. DNS translates domain names into IP addresses, allowing you to access an Internet location by its domain name. Thanks to DNS, you can visit a website by typing in the domain name ..
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