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Terms you should know
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DTIM (Delivery Traffic Indication Message) - A message sent by the router
to a wireless network device to indicate when the next broadcast or multicast
message will be sent. This parameter is necessary to accommodate devices using
power save mode.
dynamic IP address - An IP address that is temporarily assigned by a DHCP
server. Many ISPs use dynamic IP addresses. When a computer connects the
Internet, an ISP provides an IP address. When the computer disconnects from
the Internet, the ISP reassigns the dynamic IP address to another computer
requesting Internet access.
dynamic routing - In dynamic routing, a router is configured to automatically
generate routing information and share the information with neighboring
routers.
encryption - The translation of data into a secret code. Encryption is the most
effective way to achieve data security. To read an encrypted file, you must have
the encryption key (code) associated with the encrypted data. Encryption is
especially useful when you are using a wireless network because it prevents
outsiders from accessing data. Each computer on a wireless network must use
the same encryption code.
Ethernet - Ethernet is a common technology used to create computer networks.
Wired Ethernet uses cables to link computers, hubs, switches, routers. Wireless
Ethernet uses radio waves to create links.
firmware - Firmware is programming that is inserted into programmable
read-only memory (programmable ROM), thus becoming a permanent part of
a computing device. Firmware cannot be modified by a user. Updating firmware
requires a special program usually provided by the hardware manufacturer.
fragmentation - The process of breaking data into small segments for
transmitting. When the segments are received, the data is defragmented and
returned to its original format.
FTP (File Transfer Protocol) - A simple method of transferring files from one
computer to another.
Gateway - A system that joins two networks together.
hardware - Physical equipment as opposed to software. A router is a hardware
device.
HTTP (HyperText Transport Protocol) - A system that lets Web browsers and
Web servers communicate.
hub - A hardware device that joins multiple computers to create a network.