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Appendix B. Technical Terms 44
Appendix B. Technical Terms
Table 4 Technical Terms
Terms Description
IEEE 802.11n An extension to 802.11 specification developed by the IEEE for wireless LAN
(WLAN) technology. 802.11n builds upon previous 802.11 standards by adding
multiple-input multiple-output (MIMO). The additional transmitter and receiver
antennas allow for increased data throughput through spatial multiplexing and
increased range by exploiting the spatial diversity through coding schemes. The
speed is 100 Mbit/s, and so up to 4-5 times faster than 802.11g. 802.11n also
offers a better operating distance than current networks.
Access Point A base station in a wireless LAN, which is typically a wireless Ethernet (Wi-Fi)
LAN. It is typically a stand-alone device that plugs into an Ethernet switch or
hub. If more than one access point is used, like a cellular phone system, users
can roam with their mobile devices and be handed off from one cell to another.
WEP Wired Equivalent Protection, is a kind of data encryption. WEP 40bits/128bits is
the standard of IEEE 802.11. this encryption method enhances the security of
wireless network.
DHCP, DHCP
Client, DHCP
Server DHCP, Dynamic Host Configuration Protocol. An Ethernet protocol specifying
how a centralized DHCP server can assign network configuration information to
multiple DHCP clients. The assigned information includes IP addresses, DNS
addresses, and gateway (router) addresses.
Encryption To secure the communication between the wireless device and other devices,
encryption is implemented to protect secret against attack.
IP Address and
Network Mask IP Address is a four-byte number uniquely defining each host on the Internet,
usually written in dotted-decimal notation with periods separating the bytes (for
example, 134.177.244.57). Ranges of addresses are assigned by Internet, an
organization formed for this purpose. Combined with the IP address, the IP
Subnet Mask allows a device to know which other addresses are local to it, and
which must be reached through a gateway or router.
MAC The Media Access Control address is a unique 48-bit hardware address
assigned to every network interface card.
Router A device that forwards data between networks. An IP router forwards data
based on IP source and destination addresses.