Symbol MK2200 MicroKiosk, Product Reference Manual

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Glossary - 5
IP Address. (Internet Protocol address) The address of a computer attached to an IP network.
Every client and server station must have a unique IP address. A 32-bit
address used by a computer on a IP network. Client workstations have either
a permanent address or one that is dynamically assigned to them each
session. IP addresses are written as four sets of numbers separated by
periods; for example, 204.171.64.2.
Kerberos. Kerberos is a network authentication protocol. It is designed to provide strong
authentication for client/server applications by using secret-key cryptography.
A free implementation of this protocol is available from the Massachusetts
Institute of Technology. Kerberos is available in many commercial products as
well.
Key. A key is the specific code used by the algorithm to encrypt or decrypt the data. Also
see, Encryption and Decrypting.
LASER - Light
Amplification by
Stimulated Emis-
sion of Radiation.
The laser is an intense light source. Light from a laser is all the same frequency,
unlike the output of an incandescent bulb. Laser light is typically coherent and
has a high energy density.
Laser Diode. A gallium-arsenide semiconductor type of laser connected to a power source to
generate a laser beam. This laser type is a compact source of coherent light.
LED Indicator. A semiconductor diode (LED - Light Emitting Diode) used as an indicator, often in
digital displays. The semiconductor uses applied voltage to produce light of a
certain frequency determined by the semiconductor's particular chemical
composition.
MAC Address
(also called IEEE
Address).
Spectrum24
®
devices, like other Ethernet devices, have unique,
hardware-encoded MAC (also called IEEE addresses). MAC addresses
determine the device sending or receiving data. The MAC address is a 48-bit
number written as six hexadecimal bytes separated by colons.
MIL. 1 mil = 1 thousandth of an inch.
Misread (Misdecode). A condition which occurs when the data output of a reader or interface controller
does not agree with the data encoded within a bar code symbol.
MU. The MU (Mobile Unit) searches for APs with the same ESS_ID and associates with
an AP to establish communications.
Null Modem Cable. An RS-232 cable used to connect two personal computers together in close
proximity for file transfer. It attaches to the serial ports of both machines and
simulates what would occur naturally if modems and the phone system were
used. It crosses the sending wire with the receiving wire.
Nominal. The exact (or ideal) intended value for a specified parameter. Tolerances are
specified as positive and negative deviations from this value.
Nominal Size. Standard size for a bar code symbol. Most UPC/EAN codes are used over a range
of magnifications (e.g., from 0.80 to 2.00 of nominal).
Open System
Authentication.
Open System authentication is a null authentication algorithm.