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Server
A computer that provides its resources to other computers and
devices on a network. These include print servers, Internet servers
and data servers. A server can also be combined with a hub or
router.
Site survey
The process whereby a wireless network installer inspects a location
prior to putting in a wireless network. Site surveys are used to
identify the radio- and client-use properties of a facility so that access
points can be optimally placed.
SSL
Commonly used encryption scheme used by many online retail and
banking sites to protect the financial integrity of transactions. When
an SSL session begins, the server sends its public key to the browser.
The browser then sends a randomly generated secret key back to
the server in order to have a secret key exchange for that session
Subnetwork or
Subnet
Found in larger networks, these smaller networks are used to
simplify addressing between numerous computers. Subnets connect
to the central network through a router, hub or gateway. Each
individual wireless LAN will probably use the same subnet for all the
local computers it talks to.
Switch
A type of hub that efficiently controls the way multiple devices use
the same network so that each can operate at optimal performance.
A switch acts as a networks traffic cop: rather than transmitting all
the packets it receives to all ports as a hub does, a switch transmits
packets to only the receiving port.
TCP
A protocol used along with the Internet Protocol (IP) to send data in
the form of individual units (called packets) between computers over
the Internet. While IP takes care of handling the actual delivery of the
data, TCP takes care of keeping track of the packets that a message
is divided into for efficient routing through the Internet. For example,
when a web page is downloaded from a web server, the TCP
program layer in that server divides the file into packets, numbers
the packets, and then forwards them individually to the IP program
layer. Although each packet has the same destination IP address, it
may get routed differently through the network. At the other end,
TCP reassembles the individual packets and waits until they have all
arrived to forward them as a single file.
