Page 1306 - (ISC)² CISSP Certified Information Systems Security Professional Official Study Guide
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Latency The time it takes a packet to travel from source to
destination.
Jitter The variation in latency between different packets.
Packet Loss Some packets may be lost between source and
destination, requiring retransmission.
Interference Electrical noise, faulty equipment, and other factors
may corrupt the contents of packets.
In addition to controlling these factors, QoS systems often prioritize
certain traffic types that have low tolerance for interference and/or
have high business requirements. For example, a QoS device might be
programmed to prioritize videoconference traffic from the executive
conference room over video streaming from an intern’s computer.
