Flashcards in Chapter 4 Deck (20):
Wireless Personal-Area Networks (WPAN) - Operates in the range of a few feet. Bluetooth or Wi-Fi Direct-enabled devices are used in WPANs.
Wireless LANs (WLANs) - Operates in the range of a few hundred feet such as in a room, home, office, and even campus environment.
Wireless Wide-Area Networks (WWANs) - Operates in the range of miles such as a metropolitan area, cellular hierarchy, or even on intercity links through microwave relays.
Worldwide Interoperability for Microwave Access) - An IEEE 802.16 WWAN standard that provides wireless broadband access of up to 30 miles (50 km). WiMAX is an alternative to cable and DSL broadband connections
frequency bands are allocated to 802.11 wireless LANs?
2.4 GHz (UHF) - 802.11b/g/n/ad
5 GHz (SHF) - 802.11a/n/ac/ad
60 GHz (EHF) - 802.11ad
the three organizations influencing WLAN standards are:?
*ITU-R - Regulates the allocation of the RF spectrum and satellite orbits.
*IEEE - Specifies how RF is modulated to carry information. It maintains the standards for local and metropolitan area networks (MAN
*Wi-Fi Alliance -The Wi-Fi Alliance® (http://www.wi-fi.org) is a global, non-profit, industry trade association devoted to promoting the growth and acceptance of WLAN
Wi-Fi Protected Setup (WPS) to simplify device connection
WPA2™ and Extensible Authentication Protocol (EAP)
802.16 is what?
802.15 is what?
300 meters of transmission?
30 miles of transmission and up to 1GB/s?
shared service set identifier (wireless device info)
what is a controller based access point?
a wireless access point that is configured automatically by a server (wlan controller) once connected to the network.
what is an Autonomous Access point?
each wireless access point has to be configured manually. often used in small networks. each AP operated separate/ independent from the others.
what is clustering of access points?
The cluster provides a single point of administration and enables the administrator to view the deployment of APs as a single wireless network, rather than a series of separate wireless devices
Single Point Setup (SPS). used when clustering wireless access points together.
what conditions must be met between wireless access points for a cluster to form?
clustering enabled on both devices, same cluster name, connected on same network segment and same radio mode is used on each device. (like 802.11n)