Please answer the following questions.

1		A three-step repair service with one server at each step would be an example of a:
			A)	multiple-phase, multiple-channel system.
			B)	single-phase, multiple-channel system.
			C)	multiple-phase, single-channel system.
			D)	none of these.
2		A system with an arrival rate of two per hour, a service time of 20 minutes, and one server, would have a utilization of.
			A)	10%
			B)	33%
			C)	40%
			D)	67%
			E)	none of these
3		The term "queue discipline" refers to:
			A)	customers waiting in a single line for service.
			B)	processing order.
			C)	the willingness of customers to wait in line.
			D)	well-behaved customers.
4		As the system utilization increases, the average number waiting:
			A)	doesn't change.
			B)	increases.
			C)	decreases.
			D)	impossible to say.
5		Waiting lines tend to form in underloaded systems because:
			A)	capacity always exceeds demand.
			B)	capacity sometimes exceeds demand.
			C)	demand always exceeds capacity.
			D)	demand sometimes exceeds capacity.
			E)	none of these.
6		Which of these would not increase system utilization?
			A)	a decrease in the number of servers
			B)	a decrease in the service rate
			C)	a decrease in the arrival rate
			D)	an increase in the arrival rate
7		For an infinite-source system with an arrival rate of 6 per hour (Poisson) and service time of 6 minutes per customer (exponential), the average number being served is:
			A)	.10
			B)	.60
			C)	1.0
			D)	none of these
8		Which one of these would illustrate a finite-source system?
			A)	Supermarket
			B)	Bakery
			C)	Drug store
			D)	One-lane bridge
			E)	None of these