Q
- Q.2931
 - An ATM signalling protocol from the
  ITU.
 - QoS
 - See quality of service (QoS).
 - quality of service (QoS)
 - The service level defined by a service agreement between a
  network user and a network provider, which guarantees a certain
  level of bandwidth and data flow rates.
 - queue
 - A first in, first out data structure. Print jobs are queued.
  See also stack.