A U.S. telephone standard for a transmission facility at digital signal level 1 (DS1) with 1.544 megabits per second in North America and 2.048 megabits per second in Europe. The bit rate is with the equivalent bandwidth of approximately twenty-four 56-kilobits-per-second lines. A T1 circuit is capable of serving a minimum of 48 modems at 28.8 kilobits per second or 96 modems at 14.4 kilobits per second. T1 circuits are also used for voice telephone connections. A single T1 line carries 24 telephone connections with 24 telephone numbers. When it is used for voice transmission, a T1 connection must be split into 24 separate circuits.
A U.S. telephone standard for a transmission facility at digital signal level 3 (DS3). T3 is equivalent in bandwidth to 28 Tl's, and the bit rate is 44.736 megabits per second. T3 is sometimes called a 45-meg circuit.
See Transmission Control Protocol/Internet Protocol (TCP/IP).
A protocol that enables an Internet user to log on to and enter commands on a remote computer linked to the Internet, as if the user were using a text-based terminal directly attached to that computer. Telnet is part of the TCP/IP suite of protocols. The term telnet also refers to the software (client or server component) that implements this protocol.
See also protocol.
See also Transmission Control Protocol/Internet Protocol (TCP/IP).
A type of object within a process that runs program instructions. Using multiple threads allows concurrent operations within a process and enables one process to run different parts of its program on different processors simultaneously. A thread has its own set of registers, its own kernel stack, a thread environment block, and a user stack in the address space of its process.
See also kernel.
Controlling the maximum amount of bandwidth that is dedicated to Internet traffic on a server. This feature is useful if there are other services (such as e-mail) sharing the server over a busy link.
A setting that automatically cancels an unanswered client request after a certain period of time.
See transaction processing (TP).
The real-time handling of computerized business transactions as they are received by the system. Also called online transaction processing (OLTP).
Transmission Control Protocol/Internet Protocol (TCP/IP)
A set of networking protocols widely used on the Internet that provides communications across interconnected networks of computers with diverse hardware architectures and various operating systems. TCP/IP includes standards for how computers communicate and conventions for connecting networks and routing traffic.
See also Internet Protocol (IP).
See also protocol.
Transport Layer Security (TLS)encryption
A generic security protocol similar to Secure Sockets Layer (SSL), used with Simple Mail Transfer Protocol (SMTP).
See also Secure Sockets Layer (SSL).
An implementation of Data Encryption Standard (DES) encryption that employs three iterations of cryptographic operations on each segment of data. Each iteration uses a 56-bit key for encryption, which yields 168-bit encryption for the data. Although 3DES is slower than DES because of the additional cryptographic calculations, its protection is far stronger than DES.
See also cryptography.
See also Data Encryption Standard (DES).
See also encryption.
See client/server architecture.
A binary file that describes a component's methods, properties, and data structure.