Quality of Service (QoS)

• Reliability Problems and Guarantees

• Availability

  • Availability is the percentage of time the network is available to users.
  • Telephone system has 99.999% availability

• Error Rate

  • Error rate is the percentage of bits or messages that contain errors
  • 3% - 6% of all packets are lost on the Internet

Previous slide

Next slide

Back to first slide

View graphic version