BIT 3414 Quiz 6 questions well
answered graded A+
What is Waiting Line Analysis? - ANS ✔✔The tradeoff between the cost of improved service and
the cost of making customers wait.
What is a Queue? - ANS ✔✔A single waiting line.
What is a Calling Population? - ANS ✔✔The source of customers.
What is a Channel? - ANS ✔✔# of parallel servers for servicing customers.
What is Phases? - ANS ✔✔# of servers in sequence a customer must go through.
4 Basic Structures: Single-Channel, Single-Phase - ANS ✔✔Ex: Customer service w. 1 worker,
"Single Server Model"
4 Basic Structures: Single-Channel, Multiple-Phase - ANS ✔✔Ex: Fast food drive through
4 Basic Structures: Multiple-Channel, Single-Phase - ANS ✔✔Ex: Blacksburg Post Office
Variation: Multiple Lines
4 Basic Structures: Multiple-Channel, Multiple-Phase - ANS ✔✔Ex: Large Gas Station
, What is Arrival Rate (λ)? - ANS ✔✔-Lambda
-Rate at which customers arrive at a service facility in a period of time.
What is Poisson process? - ANS ✔✔A process in which events occur continuously and
independently at a constant average rate.
What is Service Rate (μ)? - ANS ✔✔Rate at which customers can be served in a period of time.
What is Queue Discipline? - ANS ✔✔Order in which customers are served.
What is an Infinite Queue? - ANS ✔✔Always possible for one more customer to arrive to be
served.
What is a Finite Queue? - ANS ✔✔Length is limited.
What is Balking? - ANS ✔✔Refusing to join a line.
What is Reneging? - ANS ✔✔Leaving a line.
What is Jockeying? - ANS ✔✔Changing channels (in multiple channel models).
What are Operating Characteristics? - ANS ✔✔Measures generated to describe the
performance of the waiting line system.
What are the assumptions for a single-channel, single-phase? - ANS ✔✔-Poisson arrival rate
-Exponential service times (aka "negative exponential distribution")
-First-come, first-served queue discipline (FCFS)
answered graded A+
What is Waiting Line Analysis? - ANS ✔✔The tradeoff between the cost of improved service and
the cost of making customers wait.
What is a Queue? - ANS ✔✔A single waiting line.
What is a Calling Population? - ANS ✔✔The source of customers.
What is a Channel? - ANS ✔✔# of parallel servers for servicing customers.
What is Phases? - ANS ✔✔# of servers in sequence a customer must go through.
4 Basic Structures: Single-Channel, Single-Phase - ANS ✔✔Ex: Customer service w. 1 worker,
"Single Server Model"
4 Basic Structures: Single-Channel, Multiple-Phase - ANS ✔✔Ex: Fast food drive through
4 Basic Structures: Multiple-Channel, Single-Phase - ANS ✔✔Ex: Blacksburg Post Office
Variation: Multiple Lines
4 Basic Structures: Multiple-Channel, Multiple-Phase - ANS ✔✔Ex: Large Gas Station
, What is Arrival Rate (λ)? - ANS ✔✔-Lambda
-Rate at which customers arrive at a service facility in a period of time.
What is Poisson process? - ANS ✔✔A process in which events occur continuously and
independently at a constant average rate.
What is Service Rate (μ)? - ANS ✔✔Rate at which customers can be served in a period of time.
What is Queue Discipline? - ANS ✔✔Order in which customers are served.
What is an Infinite Queue? - ANS ✔✔Always possible for one more customer to arrive to be
served.
What is a Finite Queue? - ANS ✔✔Length is limited.
What is Balking? - ANS ✔✔Refusing to join a line.
What is Reneging? - ANS ✔✔Leaving a line.
What is Jockeying? - ANS ✔✔Changing channels (in multiple channel models).
What are Operating Characteristics? - ANS ✔✔Measures generated to describe the
performance of the waiting line system.
What are the assumptions for a single-channel, single-phase? - ANS ✔✔-Poisson arrival rate
-Exponential service times (aka "negative exponential distribution")
-First-come, first-served queue discipline (FCFS)
