MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

G-22 Glossary
ipconfig A diagnostic command that displays all current TCP/IP network configuration
values. It is of particular use on systems running DHCP because it allows
users to determine which TCP/IP configuration values have been configured by
the DHCP server.
IPSec See Internet Protocol Security (IPSec).
IRQ See interrupt request (IRQ).
ISA See Industry Standard Architecture (ISA).
ISDN See Integrated Services Digital Network (ISDN).
ISO See International Organization for Standardization (ISO).
ISP See Internet service provider (ISP).
J
jumper A small, plastic-and-metal plug or wire for connecting different points in an
electronic circuit. Jumpers are used to select a particular circuit or option from several
possible configurations. Jumpers can be used on network interface cards to
select the type of connection through which the card will transmit, either DIX or
BNC.
K
K See kilo (K).
KB See kilobyte (KB).
Kbit See kilobit (Kbit).
Kerberos authentication protocol An authentication mechanism used to verify
user or host identity. The Kerberos v.5 authentication protocol is the default
authentication service for Windows XP Professional. Internet Protocol security and
the QoS Admission Control Service use the Kerberos protocol for authentication.
key In database management, an identifier for a record or group of records in a data
file. Most often, the key is defined as the contents of a single field (called the key
field in some database management programs and the index field in others). Keys
are maintained in tables and are indexed to speed record retrieval. Keys also refer
to code that deciphers encrypted data.
kilo (K) Refers to 1000 in the metric system. In computing terminology, because computing
is based on powers of 2, kilo is most often used to mean 1024 (2 raised to the
10th power). To distinguish between the two contexts, a lowercase k is often used
to indicate 1000 and an uppercase K indicates 1024. A kilobyte is 1024 bytes.
kilobit (Kbit) 1024 bits. See also bit, kilo (K).
kilobyte (KB) 1024 bytes. See also byte, kilo (K).