Deck 13: CD Supplement - Additional Queueing Models

Question 1

The Erlang distribution with k = 4 has higher variability than the Erlang distribution with k = 2.
Multiple Choice Questions

Answer 1

False

Question 2

The utilization factor for the finite queue variation must be less than 1 in order for the system to reach a steady state.

Answer 2

False

Question 3

The Erlang distribution has less variability than the exponential distribution for the same mean.

Answer 3

True

Question 4

When designing a queueing system with a finite queue,one important decision is how much waiting room to provide.

Question 5

Rank the exponential,degenerate,Erlang (k = 2),and Erlang (k = 4)distributions from highest to lowest variability,given the same mean.

A)degenerate,Erlang (k = 2),Erlang (k = 4),exponential.
B)degenerate,Erlang (k = 4),Erlang (k = 2),exponential.
C)exponential,Erlang (k = 2),Erlang (k = 4),degenerate.
D)exponential,Erlang (k = 4),Erlang (k = 2),degenerate.
E)none of the above.

Question 6

The finite calling population queueing model is appropriate when the potential calling population is relatively small.

Question 7

Given the same utilization factor,waiting time in the queue will be less for a finite queue than the corresponding value for the M/M/s model.

Question 8

A basic difference between infinite calling population and finite calling population queueing models is:

A)the number of servers.
B)the average waiting time.
C)the arrival distribution.
D)the size of the potential customer base.
E)the processing rate.