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Computer Security Resource Center

Computer Security Resource Center

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Quality of Service (QoS)

Abbreviation(s) and Synonym(s):

QoS

Definition(s):

  The measurable end-to-end performance properties of a network service, which can be guaranteed in advance by a Service Level Agreement between a user and a service provider, so as to satisfy specific customer application requirements. Note: These properties may include throughput (bandwidth), transit delay (latency), error rates, priority, security, packet loss, packet jitter, etc.
Source(s):
CNSSI 4009-2015 under quality of service

  A categorization of different types of network traffic to prioritize latency-sensitive data over non-latency-sensitive data.
Source(s):
NIST SP 800-127 [Withdrawn]