Symbol MK2200 MicroKiosk, Product Reference Manual

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Glossary - 8 MK2200 MicroKiosk for CE .NET 4.2 Product Reference Guide
TFTP. (Trivial File Transfer Protocol) A version of the TCP/IP FTP (File Transfer Protocol)
protocol that has no directory or password capability. It is the protocol used for
upgrading firmware, downloading software and remote booting of diskless
devices.
Tolerance. Allowable deviation from the nominal bar or space width.
UDP. (User Datagram Protocol) A protocol within the IP protocol suite that is used in
place of TCP when a reliable delivery is not required. For example, UDP is
used for real-time audio and video traffic where lost packets are simply
ignored, because there is no time to retransmit. If UDP is used and a reliable
delivery is required, packet sequence checking and error notification must be
written into the applications.
UPC. Universal Product Code. A relatively complex numeric symbology. Each character
consists of two bars and two spaces, each of which is any of four widths. The
standard symbology for retail food packages in the United States.
Visible Laser Diode
(VLD).
A solid state device which produces visible laser light.
WEP Encryption. (Wired Equivalent Privacy encryption) The conversion of data into a secret code
for transmission over a public network. The original text, or plaintext, is
converted into a coded equivalent called ciphertext using an encryption
algorithm. The ciphertext is decoded (decrypted) at the receiving end and
turned back into plaintext.
The encryption algorithm uses a key, which is a binary number that is typically from
40 to 128 bits in length. The greater the number of bits in the key (cipher
strength), the more possible key combinations and the longer it would take to
break the code. The data is encrypted, or “locked,” by combining the bits in the
key mathematically with the data bits. At the receiving end, the key is used to
“unlock” the code and restore the original data.
WEP. Wired Equivalent Privacy, is specified by IEEE for encryption and decryption of RF
(wireless) communications.
WNMP. (Wireless Network Management Protocol) This is Symbol proprietary MAC layer
protocol used for inter access point communication and other MAC layer
communication.
WNMS
(has been renamed
to AirBeam
Manager).
See AirBeam Manager