Virtual Labs

Physical Sciences Queuing Theory and Modelling Experiments

Aim

Theory

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Procedure

Simulation

Posttest

References

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Markovian queues with multiple-server (finite capacity)(M/M/c/N)

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How does the arrival rate impact the performance of the M/M/C/N queuing model?

a: Increasing the arrival rate will increase the mean waiting time in the queue Explanation

Explanation

b: Increasing the arrival rate will decrease the utilization factor Explanation

Explanation

c: Increasing the arrival rate will decrease the mean number of customers in the system Explanation

Explanation

d: Increasing the arrival rate will increase the mean service time Explanation

Explanation

When is the M/M/C/N queuing model appropriate to use?

a: When the system has a finite number of customers Explanation

Explanation

b: When the arrival rate is always equal to the service rate Explanation

Explanation

c: When the service time is deterministic and constant Explanation

Explanation

d: When the number of servers is fixed and known Explanation

Explanation

What is the utilization factor of a system in the M/M/C/N queuing model?

a: The ratio of the mean number of customers in the system to the mean waiting time in the queue Explanation

Explanation

b: The ratio of the mean waiting time in the queue to the mean service time Explanation

Explanation

c: The ratio of the mean service time to the mean waiting time in the queue Explanation

Explanation

d: The ratio of the mean number of customers in the system to the number of servers Explanation

Explanation

In the M/M/C/N queuing model, what is the meaning of the utilization factor?

a: The fraction of time that a server is idle Explanation

Explanation

b: The fraction of time that a server is busy Explanation

Explanation

c: The fraction of customers that are served immediately upon arrival Explanation

Explanation

d: The fraction of customers that leave the system without being served Explanation

Explanation

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