interface
A shared boundary. An interface might be a hardware component to link two devices or it might
be a portion of storage or registers accessed by two or more computer programs.
Internet Protocol Version 4 (IPv4)
See IPv4.
Internet Protocol Version 6 (IPv6)
See IPv6.
interposer
The part that is used to convert a 68-pin connector to a 50-pin D-shell connector.
intervention required
Manual action is needed.
INTRO
Introduction.
I/O Input/output.
I/O station
Cartridge location that is dedicated for the insertion of cartridges into and the removal of
cartridges from the library.
IOP Input/output processor.
IP Internet Protocol.
IP address
An identifier for a computer or device on an Internet Protocol (TCP/IP) network. Networks that
use the TCP/IP protocol route messages that are based on the IP address of the destination. See
IPv4 and IPv6.
IPL Initial program load.
IPSec (IP security)
A set of protocols for securing IPv6 network communications by authentication and encryption.
IP Stack
A TCP/IP protocol stack that manages static IP addresses.
IPv4 A network layer protocol for packet-switched networks. IPv4 supports 2
32
(about 4.3 billion)
addresses.
IPv6 A network layer protocol for packet-switched networks. It is the designated successor of IPv4 for
general use on the Internet. The main improvement that is brought by IPv6 is the increase in the
number of addresses available for networked devices, allowing, for example, each mobile phone
and mobile electronic device to have its own unique address.
ISV Independent software vendor.
ITDT IBM Tape Diagnostic tool.
ITST Idle-time self-test.
K
Kerberos
Kerberos Authentication is a standard (RFC 1510) third-party authentication protocol that
provides end-to-end security for distributed computing environments.
kilogram (kg)
1000 grams (approximately 2.2 pounds).
km kilometer. 1000 Meters, Approximately 5/8 mile.
Glossary 245
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