Exam 13: Capacity Planning and Queuing Models

Planning for service capacity involves prediction of consumer waiting associated with different levels of capacity.

In the M/M/1 model the calling population is finite.

A queuing system is said to be in a transient condition when ________.

A system is said to be in a transient state when the values of its governing parameters in this state are expected to change uncontrollably with time.

Which of the following is not an advantage of using one large computer system to serve an entire university community?

In analytical terms, the modern self-serve supermarket would be approximated best by the M /M /c model, where c is the number of servers.

In general, for infinite queues, the expected number of people in the system is equal to ________.

In the equation Ls = Lq + ρ, ρ refers to ________.

Service capacity decisions have all of the following strategic characteristics, except ________.

For a standard service system to operate over the long run, the servers must be idle part of the time.

Analytical queuing models are classified mainly on the basis of the calling population characteristics and the queue discipline.

Verification refers to determining whether or not the structure of a simulation model is consistent with the real system.

The cost of service capacity is determined by ________.

Excess capacity is required in a service system because variability in customer arrivals and service times creates idle capacity.

A shortcoming of simulation is the use of pseudo-random numbers.

A parking lot is a special variation of the ________ queuing model.

When Xerox Corporation introduced the Model 9200 Duplicating System, the level of service dipped because technical representatives were assigned to territories.

For a system to reach steady state, the arrival rate must always be greater than the service rate, i.e., the traffic intensity ρ must always be greater than unity.

Reducing the variability either in service time or arrival time can reduce most of the waiting involved for the consumers.

Little's Law states that a relationship exists between ________.