How is ATM able to guarantee a specific QoS for certain types of transmissions?
What will be an ideal response?
ANSWER: Establishing a reliable connection allows ATM to guarantee a specific QoS for certain types of transmissions. ATM networks can supply four QoS levels, from a "best effort" attempt for noncritical data to a guaranteed, real-time transmission for time sensitive data. This is important for organizations using networks for time-sensitive applications, such as video and audio transmissions. For example, a company might want to use its ATM connection between two offices located at opposite sides of a state to carry voice phone calls with the highest possible QoS. On the other hand, the company might assign a low QoS to routine email messages exchanged between the two offices.
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