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Wireless LAN With Complete Solutions
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Wireless LAN With Complete SolutionsWPANs - Wireless Personal-Area Networks. Operates within a few feet. Devices used in
WPANs: Bluetooth or Wi-Fi Direct-enabled devices
WLANs - Wireless LANs. Operates within a range of a few hundred feet such as within a
room, home, office, and even campus environment.
Wireless Wide-Area Networks (WWANs) - ANSWER Operate over miles such as a
metropolitan area, cellular hierarchy, or even on intercity links through microwave
relays.
Bluetooth - ANSWER Originally an IEEE 802.15 WPAN standard that uses a
device-pairing process to communicate over distances up to .05 mile (100m).
Wi-Fi (wireless fidelity) - ANSWER An IEEE 802.11 WLAN standard commonly deployed
to provide network access to home and corporate users, to include data, voice and
video traffic, to distances up to 300m (0.18 mile)
WiMAX (Worldwide Interoperability for Microwave Access) - ANSWER An IEEE 802.16
WWAN standard that provides wireless broadband access of up to 30 miles (50 km).
Cellular broadband: cellular broadband consists of various corporate, national, and
international organizations operating through service provider cellular access to offer
mobile broadband network connectivity. Satellite broadband: satellite broadband
delivers network access to remote sites using a directional satellite dish aligned with
the geostationary Earth orbit GEO satellite.
802.11 - ANSWER Released in 1997 and now obsolete, this is the original WLAN
specification that operated in the 2.4 GHz band and offered speeds of up to 2 Mb/s
, IEEE 802.11a - ANSWER Released in 1999, it operates in the less crowded 5 GHz
frequency band and offers speeds of up to 54 Mb/s.
IEEE 802.11g - ANSWER Released in 2003, it operates in the 2.4 GHz frequency band
and offers speeds of as much as 54 Mb/s.
IEEE 802.11n - ANSWER Released in 2009, it operates in the 2.4 GHz and 5 GHz
frequency bands and is referred to as a dual-band device. Typical data rates range from
150 Mb/s to 600 Mb/s with a distance range of up to 70 m (.5 mile).
IEEE 802.11ac - ANSWER Released in 2013, the 5 GHz frequency band supports a data
rate of 450 Mb/s to 1.3 Gb/s (1300 Mb/s).
IEEE 802.11ad - ANSWER Scheduled for release in 2014, also called "WiGig" uses a
tri-band Wi-Fi solution using 2.4 GHz, 5 GHz, and 60 GHz, offering up to 7 Gb/s
theoretical speeds.
ITU-R - ANSWER Regulates the allocation of the RF spectrum and satellite orbits.
IEEE - ANSWER Specifies how RF is modulated to carry information.
Wi-Fi Alliance - ANSWER a global, non-profit, industry trade association devoted to
promoting the growth and acceptance of WLANs.
Autonomous APs - ANSWER standalone devices configured using the Cisco CLI or a
GUI.
Controller-Based APs - ANSWER server-dependent devices that require no initial
configuration.
Omnidirectional Wi-Fi Antennas - ANSWER this antenna provide 360-degree coverage
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