Sun Microsystems Sun Fire X4150 - Manual (Page 144)

128 Sun Fire X4150 Server Embedded Lights Out Manager Administration Guide • September 2007
transmission control
block (TCB) Part of the Transmission Control Protocol/Internet Protocol (TCP/IP) that
records and maintains information about the state of a connection.
Transmission Control
Protocol/Internet
Protocol (TCP/IP) An Internet protocol that provides for the reliable delivery of data streams
from one host to another. TCP/IP transfers data between different types of
networked systems, such as systems running Solaris, Microsoft Windows, or
Linux software. TCP guarantees delivery of data and that packets will be
delivered in the same sequence in which they were sent.
trap Event notification made by Simple Network Management Protocol (SNMP)
agents by their own initiative when certain conditions are detected. SNMP
formally defines seven types of traps and permits subtypes to be defined.
Trivial File Transport
Protocol (TFTP) A simple transport protocol that transfers files to diskless systems. TFTP uses
User Datagram Protocol (UDP).
U
uninterruptible power
supply (UPS) An auxiliary or backup power supply that provides electrical service over
extended system power outages. A UPS for a LAN or computer system
provides continuous power in the event of a power failure.
Universal Serial Bus
(USB) An external bus standard that supports data transfer rates of 450 Mbit/sec.
(USB 2.0). A USB port connects devices, such as mouse devices, keyboards,
modems, and printers to the computer system.
unshielded twisted
pair/shielded twisted
pair (UTP/STP) A type of Ethernet cable.
user account A record of essential user information that is stored on the system. Each user
who accesses a system has a user account.
User Datagram Protocol
(UDP) A connectionless, transport layer protocol that adds some reliability and
multiplexing to the Internet Protocol (IP). UDP enables one application
program to deliver, via IP, datagrams to another application program on
another machine. The Simple Network Management Protocol (SNMP) is
usually implemented over UDP.