CIT228 Chapter 2 Wireless Local Area Networks
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| access point (AP) | A device that connects wireless devices to each other and to a wired network.
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| access point mode | A mode of a wireless bridge that causes the bridge to function as a standard AP only. In access point mode, a wireless bridge and does not communicate with other remote wireless bridges but only with wireless client devices.
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| ad hoc wireless mesh network | A network in which wireless client devices act as the relay station for signals to and from the AP.
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| autonomous access point | A device that is separate from other network devices including other autonomous access points and that contains all the intelligence required for wireless authentication, encryption, and management.
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| backhaul wireless mesh network | A wireless mesh network (WMN)
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| bridge | A device that is used to connect two network segments together, even if those segments use different types of physical media.
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| bus | On a computer, the subsystem for transferring data between the system’s components.
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| bus mastering | A technology that allows a controller on the bus to talk to other devices or memory without going through the CPU.
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| CardBus | A 32-bit bus in the PC Card form factor.
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| client network adapter | A device that connects a computer to a wired network.
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| CompactFlash (CF) | A small form factor that is generally used as a mass storage device format for portable electronic devices.
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| consortia | Industry-sponsored organizations that want to promote a specific technology. Consortia often take on the task of creating standards for specific technologies.
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| data rate | The theoretical maximum rated speed of a network.
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| de facto standards | Standards that are common practices that the industry follows for various reasons such as ease of use or tradition.
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| de jure standards | Standards that are official standards controlled by an organization or body that has been entrusted with that task.
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| detector | A device that receives a signal.
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| diffused transmission | An infrared wireless transmission that relies on reflected light.
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| directed transmission | An infrared wireless transmission that requires that the emitter and detector be directly aimed at one another.
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| emitter | A device that transmits a signal and is used in an IEEE 802.11 infrared network.
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| endspand device | A Power over Ethernet (PoE)
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| Enterprise Encryption Gateway (EEG) | A device that provides encryption and authentication services for a wireless network.
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| ExpressCard | A type of expansion card designed to deliver higher-performance modular expansion in a small size.
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| fat access points | Devices that are separate from other network devices and even other (autonomous) access points that have all of the “intelligence” for wireless authentication, encryption, and management contained within the AP itself.
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| form factor | A term used to refer to the size and shape of a device.
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| gateway | A network device that acts as an entrance to another network.
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| Half Mini PCIe card | A PCI-e card that is half the length of a Mini-PCI-e card.
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| IEEE 802.11 | The first wireless LAN standard with a speed of 1 and 2 Mbps.
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| IEEE 802.11-2007 | The official document of all of the IEEE 802.11 standards and amendments.
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| IEEE 802.11a | A wireless LAN standard that specifies a speed of 54 Mbps and uses a different set of radio wave frequencies than 802.11b.
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| IEEE 802.11b | A wireless LAN standard with a maximum speed of 11 Mbps.
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| IEEE 802.11g | A wireless LAN standard that supports a speed of 54 Mbps and uses the same set of radio wave frequencies as 802.11b.
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| IEEE 802.11n-2009 | A wireless LAN standard that supports a speed of up to 600 Mbps while also increasing the area of coverage.
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| infrared light | An invisible light that can be used for wireless transmissions.
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| light spectrum | All visible and invisible light.
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| lightweight access points | An access point that does not contain the management and configuration functions that are found in autonomous access points.
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| Line of sight (LoS) | Term used to refer to a setting in which an emitter is aimed directly at a transmitter with no intervening obstacles.
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| mesh access point | An access point that communicates wirelessly with the next closest mesh access point.
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| midspan device | A Power over Ethernet (PoE)
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| Mini-PCI | A connector in a laptop computer used to expand the laptop’s capabilities.
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| Mini-PCI-e | A smaller version of a Mini-PCI connector.
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| multiport PoE injectors | A PoE injector that can provide power to multiple cables simultaneously.
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| network interface card (NIC) | A device used to connect a computer to a network.
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| nonroot mode | A mode of a wireless bridge in which the bridge can transmit only to a wireless bridge that is in root mode.
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| PC Card | A type of expansion card used in a laptop computer, also known as a PCMCIA card.
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| PCI Express (PCI-e) | An expansion slot that contains a high-speed point-to-point serial bus. This technology has replaced the older shared parallel PCI bus architecture.
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| PCMCIA (Personal Computer Memory Card International Association) | cards A type of expansion card used in a laptop computer.
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| Peripheral Component Interconnect (PCI) | Expansion slots inside the computer that allow devices to be added to the system.
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| PoE injector | A small and inexpensive device that can inject power into an Ethernet cable.
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| PoE-enabled Ethernet switch | A device that can contain embedded PoE technology that provides both electrical power and data.
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| point-to-multipoint (PtMP) | A remote wireless bridge configuration in which multiple buildings are connected.
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| point-to-point (PtP) | A remote wireless bridge configuration in which two buildings are connected.
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| Power over Ethernet (PoE) | A technology that sends direct current (DC)
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| power sourcing equipment (PSE) | A PoE device that provides data and electrical power via embedded PoE technology.
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| remote office WLAN controller | A device used to remotely manage multiple enterprise WLAN controllers from a central location.
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| remote wireless bridge | A device that connects two or more networks that are separated by a longer distance.
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| repeater mode | A mode of a wireless bridge that allows the bridge to extend the distance between buildings.
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| residential WLAN gateway | A single wireless hardware network device for SOHO or home use that typically combines multiple features into a single hardware device.
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| RJ-45 connection | A connector on a network interface card used to connect the card to a wired network using a cable.
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| root bridge | Term used to refer to a wireless bridge operating in root mode. A root bridge can communicate only with other wireless bridges that are not in root mode.
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| root mode | A mode of a remote wireless bridge in which the bridge can communicate only with other bridges that are not in root mode.
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| Secure Digital (SD) | A small form factor that was originally used as a format for portable storage devices for digital cameras and PDAs.
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| Secure Digital Input Output (SDIO) | A combination of an SD card and an input/output (I/O)
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| single port PoE injectors | A PoE injector that can provide power to a single cable.
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| SoftAP | A software-based wireless access point that uses a designated virtual wireless NIC.
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| standard | A model that is used for comparison.
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| station (STA) | A wireless device.
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| thin access points | An access point that does not contain the management and configuration functions that are found in autonomous access points.
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| throughput | The measure of how much actual data can be sent per unit of time across a network.
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| Virtual Wi-Fi | Term used to refer to the virtualization of the physical wireless NIC into multiple virtual wireless NICs.
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| Windows Connect Now (WCN) | A feature of Microsoft Windows 7 for connecting wireless devices for home networking and SOHOs.
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| wireless client network interface card adapter | A device that connects a wireless device to a wireless network.
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| Wireless LAN controller (WLC) | A device that can be configured with a wireless network’s settings, after which the settings are automatically distributed to all lightweight access points on the network.
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| wireless mesh network (WMN) | A network of wireless mesh access points that communicate between themselves.
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| wireless mesh routers | A mesh access point that functions similar to routers in directing traffic along the best traffic path.
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| wireless switch | A device that contains the management and configuration functions for a lightweight access point.
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| wireless workgroup bridge | A device used to connect a wired network segment to a wireless network segment.
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| Wireless Zero Configuration (WZC) | A wireless connection management utility that operates as a Windows service and interacts with the client hardware NIC drivers.
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| WLAN Autoconfig | A Microsoft Windows 7 and Vista wireless connection management utility that operates as a Windows service and interacts with the client hardware NIC drivers default settings.
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