Congestion Control and Quality of Service
1. In ________ we try to avoid traffic congestion.
A.  congestion control B.  quality of service C.  either (a) or (b) D.  both (a) and (b)
2. In _________, we try to create an appropriate environment for the traffic
A.  congestion control B.  quality of service C.  either (a) or (b) D.  both (a) and (b)
3. Traffic ______ are qualitative values that represent a data flow.
A.  controls B.  descriptors C.  values D.  none of the above
4. The _______ defines the maximum data rate of the traffic
A.  peak data rate B.  maximum burst size C.  effective bandwidth D.  none of the above
5. The________ normally refers to the maximum length of time the traffic is generated at the peak rate.
A.  peak data rate B.  maximum burst size C.  effective bandwidth D.  none of the above
6. The ________ is a function of three values: average data rate, peak data rate, and maximum burst size.
A.  peak data rate B.  maximum burst size C.  effective bandwidth D.  none of the above
7. A _________ traffic model has a data rate that does not change.
A.  constant bit rate B.  variable bit rate C.  bursty D.  none of the above
8. In the ________ traffic model, the rate of the data flow changes in time, with the changes smooth instead of sudden and sharp.
A.  constant bit rate B.  variable bit rate C.  bursty D.  none of the above
9. In the ______ traffic model, the data rate changes suddenly in a very short time.
A.  constant bit rate B.  variable bit rate C.  bursty D.  none of the above
10. . _______ happens in any system that involves waiting.
A.  Congestion B.  Jamming C.  Error D.  none of the above