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Financial CIA-III Exam (page: 46)
Financial The Certified Internal Auditor Part 3
Updated on: 17-Feb-2026

Viewing Page 46 of 312
CIA-III PDF 1554 Questions

Queuing models are concerned with balancing the cost of waiting in the queue with the:

  1. Cost of providing service.
  2. Number of customers in the queue.
  3. Average waiting time in the queue.
  4. Usage rate for the service being rendered.

Answer(s): A

Explanation:

Queuing waiting-line) models minimize, for a given rate of arrivals, the sum of 1) the cost of providing service including facility costs and operating costs) and 2) the cost of idle resources waiting in line. The latter may be a direct cost, if paid employees are waiting, or an opportunity cost in the case of waiting customers. This minimization occurs at the point where the cost of waiting is balanced by the cost of providing service.



The operating condition that car-or-mot be identified by using a queuing model is the:

  1. Average percentage of time that a service facility is idle.
  2. Probability of a specified number of units in the queue.
  3. Actual amount of time each unit spends in the queue.
  4. Average number of units in the system and the mean length of the queue.

Answer(s): C

Explanation:

Queuing models determine the operating characteristics of a waiting line: the probability that no units are in the system, the average units in the line, the average units in the system, the average time a unit waits, the average time a unit is in the system, the probability that a unit must wait, and the probability of a given number of units in the system. However, the actual time spent in the queue cannot be determined from the model.



A bank has changed from a system in which lines are formed in front of each teller - to a one line, multiple-server system.
When a teller is free, the person at the head of the line goes to that teller. Implementing the new system will:

  1. Decrease the bank's wage expenses because the new system uses fewer tellers.
  2. Decrease time customers spend in the line.
  3. Increase accuracy in teller reconciliations at the end of the day because fewer customers are served by each teller
  4. Improve on-the-job training for tellers because each will perform different duties.

Answer(s): B

Explanation:

When all customers must wait in a single queue, a decrease in waiting time is possible given multiple servers. An added effect is to increase customer satisfaction.



The drive-through service at a fast-food restaurant consists of driving up to place an order, advancing to a window to pay for the order, and then advancing to another window to receive the items ordered. This type of waiting-line system is:

  1. Single channel, single phase.
  2. Single channel, multiple phase.
  3. Multiple channel, single phase.
  4. Multiple channel, multiple phase.

Answer(s): B

Explanation:

The drive-through represents a single queue channel). Because this waiting line has three services in series, it may be said to be multiple phase. Another example is the typical factory assembly line. This terminology channel, phase), however, is not used by all writers on queuing theory.



A post office serves customers in a single line at one service window. During peals periods, the rate of arrivals has a Poisson distribution with an average of 100 customers per hour and service times that are exponentially distributed with an average of 0 seconds per customer.
From this, one can conclude that the:

  1. Queue will expand to infinity.
  2. Server' will be idle one-sixth of the time.
  3. Average rate is 100 customers per hour.
  4. Average customer waiting time is minutes.

Answer(s): A

Explanation:

One hundred customers arrive in line per hour and only 60 are serviced per hour. Accordingly, the queue will expand to infinity during peaty periods.



Viewing Page 46 of 312



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