Short for committed information rate, a specified amount of guaranteed bandwidth (measured in bits per second) on a Frame Relay service. Typically, when purchasing a Frame Relay service, a company can specify the CIR level they wish. The Frame Relay network vendor guarantees that frames not exceeding this level will be delivered. It’s possible that additional traffic may also be delivered, but it’s not guaranteed.
Some Frame Relay vendors offer inexpensive services with a CIR equal to zero. This essentially means that the network will deliver as many frames as it can, but it doesn’t guarantee any bandwidth level.
Pronounced sisk, and stands for complex instruction set computer. Most personal computers, use a CISC architecture, in which the CPU supports as many as two hundred instructions. An alternative architecture, used by many workstations and also some personal computers, is RISC (reduced instruction set computer), which supports fewer instructions.
(Certification for Information System Security Professional) A certification reflecting the qualifications of information systems security practitioners. The CISSP examination consists of 250 multiple choice questions, covering topics such as Access Control Systems, Cryptography, and Security Management Practices, and is administered by the International Information Systems Security Certification Consortium or (ISC)2 (www.isc2.org). The (ISC)2 promotes the […]
Short for Connected Limited Device Configuration. CLDC is the J2ME configuration for smaller handheld devices that are usually battery operated and low in memory with limited processing power and low bandwidth. Most often the CLDC uses the K virtual machine, which is suitable for devices with 16/32-bit RISC/CISC microprocessors/controllers, and with as little as 160 […]
Pronounced see-lek. Short for competitive local exchange carrier, a telephone company that competes with an incumbent local exchange carrier (ILEC) such as a Regional Bell Operating Company (RBOC), GTE, ALLNET, etc. With the passage of the Telecommunications Act of 1996, there has been an explosion in the number of CLECs. The Act allows companies with […]
(1) Short for command line interface, a user interface common to MS-DOS computers. The user sees the command line on the monitor and a promptthat is waiting to accept instructions from the user. The user types in the command, the computer acts on that command and then issues a new prompt for the next instruction […]