EXAM RETAKE: Glossary "W-X-Y-Z"

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walled garden

A closed software system in which the user's access to content and services is controlled by the user's mobile carrier or by a service provider.

WEP (Wired Equivalent Privacy)

A mechanism for encrypting data sent over a wireless connection. WEP is considered flawed (that is, a determined and well-resourced attack could probably break the encryption). See WPA and WPA2

Wi-Fi analyzer

A Wi-Fi spectrum analyzer used to detect devices and points of interference, as well as analyze and troubleshoot network issues on a WLAN or other wireless networks.

WIA (Windows Image Acquisition)

Driver model and API (Application Programming Interface) for interfacing scanner hardware with applications software on Windows PCs.

WISP (Wireless Internet Service Provider)

An ISP offering Internet access over ground-based Line of Sight (LoS) microwave transmitters.

WMN (Wireless Mesh Network)

Wireless network topology where all nodes—including client stations—are capable of providing forwarding and path discovery. This improves coverage and throughput compared to using just fixed access points and extenders.

WoL (Wake on LAN)

Where a host has a compatible network card, a network server can be configured to transmit a "magic packet" that causes the host to power up

WPA (Wi-Fi Protected Access)

An improved encryption scheme for protecting Wi-Fi communications, designed to replace WEP.
The original version of WPA was subsequently updated (to WPA2) following the completion of the 802.11i security standard. WPA features an improved method of key distribution and authentication for enterprise networks, though the pre-shared key method is still available for home and small office networks. WPA2 uses the improved AES cipher, replacing TKIP and RC4


Low-power wireless communications protocol used primarily for home automation. Z-Wave uses radio frequencies in the high 800 to low 900 MHz range and a mesh topology. See Also Zigbee

ZIF socket (Zero Insertion Force socket)

A processor socket type allowing the chip to be placed in the socket with as little risk of damaging the pins on the processor chip as possible.
Has the little "locking Bar"


Low-power wireless communications open source protocol used primarily for home automation. Zigbee uses radio frequencies in the 2.4 GHz band and a mesh topology.