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QXGA

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• Q.931

  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 […]

• QoE

  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 […]

• QoS

  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.

• QuickDraw

  The underlying graphics display system for Apple Macintosh computers. The QuickDraw system enables programs to create and manipulate graphical objects. Because all Macintosh programs use QuickDraw, they all share a common look. There are several versions of QuickDraw that offer different color capabilities and other features. The newest, called QuickDraw GX, supports 16.7 million colors. […]

• QuickTime

  A video and animation system developed by Apple Computer. QuickTime is built into the Macintosh operating system and is used by most Mac applications that include video or animation. PCs can also run files in QuickTime format, but they require a special QuickTime driver. QuickTime supports most encoding formats, including Cinepak, JPEG, and MPEG. QuickTime […]

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