Short for Qualified Vendor List, QVL is a list of pre-qualified vendors who have third-party products or services that a manufacturer has approved as suitable and compatible with their own products or services. For example, a motherboard manufacturer will often provided users with a system memory QVL that indicates which vendors and memory part numbers work with that specific motherboard.
- QWERTY Keyboard (English Keyboard)
(Pronounced kwer-tee). QWERTY refers to the arrangement of keys on a standard English computer keyboard or typewriter. The name derives from the first six characters on the top alphabetic line of the keyboard. Arrangement of Characters The arrangement of characters on a QWERTY keyboard was designed in 1868 by Christopher Sholes, the inventor of the […]
Short for Quantum Extended Graphics Array, a display specification that is capable of supporting 2048 x 1536 resolution, or approximately 3.2 million pixels.
Q.931 is an ISDN connection control protocol, roughly comparable to TCP in the Internet protocol stack. Q.931 doesn’t provide flow control or perform retransmission, because the underlying layers are assumed to be reliable and the circuit-oriented nature of ISDN allocates bandwidth in fixed increments of 64 kbps. Q.931 does manage connection setup and breakdown. In […]
Short for Quality of Experience in telecommunications terminology, it is a measurement used to determine how well that network is satisfying the end user’s requirements. In contrast to Quality of Service (QoS) a measurement of network operating conditions such as noise, crosstalk, or lost or dropped packets, in telecommunications terminology, QoE takes into consideration the […]
Short for Quality of Service, a networking term that specifies a guaranteed throughput level. One of the biggest advantages of ATM over competing technologies such as Frame Relay and Fast Ethernet, is that it supports QoS levels. This allows ATM providers to guarantee to their customers that end-to-end latency will not exceed a specified level.