254.0.1 THROUGH 254.255.254.AUTONOMOUS ACCESS POINT A SELF-CON...

169.254.0.1 through 169.254.255.254.autonomous access point A self-contained intelligent access point that can function as an independent wireless network device.azimuth In RF terminology, the angle of measurement for the horizontal radiation pattern of an antenna element.

B

basic service area (BSA) The area of radio frequency coverage surrounding an access point or other wireless infrastructure device and the associated wireless LAN client devices.basic service set One access point connected to a distribution system (DS).Basic Service Set Identifier (BSSID) The MAC address or physical address of an access point radio card. Should not to be confused with Service Set Identifier (SSID).beamwidth The angle of measurement in degrees of the horizontal and vertical radiation patterns of an antenna element.business requirements Expectations within a certain type of business model such as manufacturing, enterprise, retail, or education.

C

captive portal Authentication web page for a wireless hotspot or other type of wireless LAN application. The web page is a redirection and might ask users to enter authentication information and to agree to terms and conditions of use of the wireless network.Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) An access method used in wireless networking that attempts to avoid collisions on a network.Carrier Sense Multiple Access/Collision Detection (CSMA/CD) An access method used in Ethernet designed to detect collisions on a network.cell Area of RF coverage extending from an antenna in wireless infrastructure and client devices.centralized administration Configuration of many devices such as access points from one central device, software application, or location.430 Glossarychannel Radio frequency range assignment varying in frequency based on the use of the device.channel planning A method used in the design of wireless networks so that overlapping cells are on different or non-overlapping channels and minimize interference.clear channel assessment (CCA) The Physical carrier sensing performed constantly by all stations which are not currently transmitting or receiving data and used to determine if the medium is available for transmission.co-location In wireless networking, multiple devices or access points in the same RF space and usually on different channels.CompactFlash (CF) Originally designed as a mass storage device format used in portable electronic devices. Now used for a variety of devices and technologies, including Ethernet networks, Bluetooth, digital cameras, RFID, and Wi-Fi networks.contention In wireless networking, multiple devices competing for a chance to send data on the network using an access method.Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP) A security protocol that is a mandatory part of the IEEE 801.11i amendment to the standard and part of Wi-Fi Protected Access 2.0 (WPA2) certification from the Wi-Fi Alliance, providing strong security.

D

data bus Carries data between components such as the CPU, memory, and expansion boards or slots within a computer.Data Link layer Layer 2 of the Open Systems Interconnection (OSI) model. Consists of two sublayers: Media Access Control (MAC) and Logical Link Control (LLC).data rate The theoretical rate at which data can be transferred based on design of the sys-tem. Actual throughput is less than the data rate because of overhead and access method used.data security Measures taken to ensure that information transmitted from one device to another is not seen or tampered with in transit and that the same information that is sent is what is received.dead spot Area that lacks RF coverage.deauthentication The process of no longer being authenticated to a system. In IEEE