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Beans
Module 7 Flash Cards
| Term | Definition |
|---|---|
| PAN (personal area network) | A small network consisting of personal devices at close range: the devices can include smartphones, PDAs, and notebook computers. |
| LAN (local area network) | A network bound by routers or other gateway devices that usually covers only a small area, such as one building. |
| WMN (wireless mesh network) | Many wireless devices communicating directly rather than through a single central device. This technology is commonly used in IoT wireless networks. |
| MAN (metropolitan area network) | A type of network that covers a large city or campus |
| WAN (wide area network) | A network or group of networks that span a large geographical area. |
| Internet service provider (ISP) | An organization, such as Charter, that provides individuals and organizations access to the Internet via a technology such as cable Internet, DSL, or cellular |
| Bandwidth | In relation to analog communication, the range of frequencies that a communications channel or cable can carry. In general use, the term refers to the volume of data that can be transmitted on a bus or over a cable; bandwidth is stated in bits per second |
| data throughput | See bandwidth |
| latency | Delays in network transmissions that result in slower network performance. Latency is measured by the round trip time it takes for a data packet to travel from source to destination and back to the source |
| 3G | A third generation cellular wireless Internet connection standard used with CDMA or GSM mobile phone services that allows for transmitting data and video. |
| 4G | A fourth generation cellular wireless Internet connection standard typically used with the LTE (Long Term Evolution) technology; 4G transmits data and video up to 1 Gbps |
| 5G | A fifth generation cellular wireless Internet connection standard expected to transmit 10-50 Gbps. 5G is not yet released |
| ISDN (Integrated Services Digital Network) | A broadband telephone line that can carry data at about five times the speed of regular telephone lines. Two channels (telephone number) share a single pair of wires ISDN has been replaced DSL |
| Broadband | A transmission technique that carries more than one type of transmission on the same medium, such as voice and DSL on a regular telephone line |
| 802.11a | An outdated Wi-Fi standard that transmitted up to 54 Mbps. |
| 802.11b | An outdated Wi-Fi standard that transmitted up to 11 Mbps and experienced interference with cordless phones and microwaves |
| 802.11g | An outdated Wi-Fi standard that was compatible with and replaced 802.11b |
| 802.11n | See IEEE 802.11n |
| multiple input/multiple output (MIMO) | A feature of the IEEE 802.11n/ac standards for wireless networking whereby two or more antennas are used at both ends of transmissions to improve performance |
| 802.11ac | see IEEE 802.11ac |
| beamforming | A technique supported by the IEEE 802.11ac Wi-Fi standard that can detect the location of connected devices and increase signal strength in that direction |
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