Funkwerk artem ComPoint Butterfly Manual page 107

Appendix A
• Subnet mask
A method to divide several IP networks into a number of subgroups
or subnetworks. The mask is a binary pattern which has to corre-
spond to the IP addresses in the network. By default, the subnet mask
is 255.255.255.0. In this case, 254 different IP addresses could occur in
a subnetwork, from x.x.x.1 to x.x.x.254.
• TCP, Transmission Control Protocol
A method used in the IP protocol to transfer messages as units (data-
grams) between the network subscribers within a LAN or WLAN.
While IP is concerned with the packet transfer via IP addresses, TCP
controls which packets belong together. TCP is a connection-oriented
protocol which transfers acknowledgments on the receipt of the
packets to the sender.
• TCP/IP, Transmission Control Protocol / Internet Protocol
TCP/IP is the basic protocol in the Internet. It does not consist of TCP
and IP only, but also contains a number of further protocols.
• UDP, User Datagram Protocol
In contrast to TCP, UDP does not send receipts on received packets
and is used in LANs and WLANs for the transmission of audio and
video data. If a packet is lost, it is not resent, since it would already be
obsolete by then.
• WDS:
The Wireless Distribution System can be used to network several
access points or to set up wireless connections to remote access
points.
• WEP, Wired Equivalent Privacy
An encryption mechanism based on 40 or 64 bits or key lengths of
104 or 128 bits. WEP has been defined in IEEE 802.11, respectively in
Wi-Fi.
• WINIPCFG
A graphic tool under Windows 95, 98, and 2000, which uses the
Win32 API to view and perform the address configuration of com-
puters.
• WLAN, Wireless Local Area Network
A group of computers which is networked wirelessly (WLAN).
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