D-Link DWL-2200AP [181/192] Tcp ip

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TCP
The Transmission Control Protocol (TCP) is built on top of Internet Protocol (IP). It adds
reliable communication (guarantees delivery of data), flow-control, multiplexing (more than
one simultaneous connection), and connection-oriented transmission (requires the receiver
of a packet to acknowledge receipt to the sender). It also guarantees that packets will be
delivered in the same order in which they were sent.
TCP/IP
The Internet and most local area networks are defined by a group of protocols. The most
important of these is the Transmission Control Protocol over Internet Protocol (TCP/IP), the
de facto standard protocols. TCP/IP was originally developed by Defense Advanced Research
Projects Agency (DARPA, also known as ARPA, an agency of the US Department of Defense).
Although TCP and IP are two specific protocols, TCP/IP is often used to refer to the entire
protocol suite based upon these, including ICMP, ARP, UDP, and others, as well as applications
that run upon these protocols, such as telnet, FTP, etc.
TKIP
The Temporal Key Integrity Protocol (TKIP) provides an extended 48-bit initialization vector,
per-packet key construction and distribution, a Message Integrity Code (MIC, sometimes
called “Michael”), and a re-keying mechanism. It uses a RC4 stream cipher to encrypt the
frame body and CRC of each 802.11 frame before transmission. It is an important component
of the WPA and 802.11i security mechanisms.
ToS
TCP/IP packet headers include a 3-to-5 bit Type of Service (ToS) field set by the application
developer that indicates the appropriate type of service for the data in the packet. The way the
bits are set determines whether the packet is queued for sending with minimum delay,
maximum throughput, low cost, or midway “best-effort” settings depending upon the
requirements of the data. The ToS field is used by the D-Link DWL-2210AP to provide
configuration control over Quality of Service (QoS) queues for data transmitted from the AP to
client stations.
UDP
The User Datagram Protocol (UDP) is a transport layer protocol providing simple but unreliable
datagram services. It adds port address information and a checksum to an IP packet. UDP
neither guarantees delivery nor does it require a connection. It is lightweight and efficient. All
error processing and retransmission must be performed by the application program.
Unicast
A Unicast sends a message to a single, specified receiver. In wireless networks, unicast
usually refers to an interaction in which the access point sends data traffic in the form of IEEE
802.1x Frames directly to a single client station MAC address on the network.
Some wireless security modes distinguish between how unicast, multicast, and broadcast
frames are encrypted or whether they are encrypted.
See also Multicast and Broadcast.
Glossary

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