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Diversity antenna. A type of antenna system that uses two antennas to
maximize reception and transmission quality and reduce interference.
DNS (Domain Name System, or Service, or Server). A program that
translates URLs to IP addresses by accessing a database maintained on a
collection of Internet servers. The program works behind the scenes to
facilitate surfing the Web with alpha versus numeric addresses. A DNS
server converts a name like mywebsite.com to a series of numbers like
107.22.55.26. Every website has its own specific IP address on the Internet.
DSL (Digital Subscriber Lines). Various technology protocols for high-
speed data, voice and video transmission over ordinary twisted-pair copper
POTS (Plain Old Telephone Service) telephone wires.
Encryption key. An alphanumeric (letters and/or numbers) series that
enables data to be encrypted and then decrypted so it can be safely shared
among members of a network. WEP uses an encryption key that
automatically encrypts outgoing wireless data. On the receiving side, the
same encryption key enables the computer to automatically decrypt the
information so it can be read.
ESSID (Extended Service Set ID). The identifying name of an 802.11
wireless network. When you specify your correct ESSID in your client setup
you ensure that you connect to your wireless network rather than another
network in range. (See SSID.) The ESSID can be called by different terms,
such as Network Name, Preferred Network, SSID or Wireless LAN Service
Area.
Ethernet.
International
standard
networking
technology
for
wired
implementations. Basic 10BaseT networks offer a bandwidth of about 10
Mbps. Fast Ethernet (100 Mbps) and Gigabit Ethernet (1000 Mbps) are
becoming popular.
Firewall. A system that secures a network and prevents access by
unauthorized users. Firewalls can be software, hardware or a combination
of both. Firewalls can prevent unrestricted access into a network, as well as
restrict data from flowing out of a network.
Gateway. In the wireless world, a gateway is an access point with additional
software capabilities such as providing NAT and DHCP. Gateways may also
provide VPN support, roaming, firewalls, various levels of security, etc.
Hotspot. A place where you can access Wi-Fi service. This can be for free
or for a fee. HotSpots can be inside a coffee shop, airport lounge, train
station, convention center, hotel or any other public meeting area.
3-in-1 Access Point
ViewSonic
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