CPIM Detailed Scheduling and Planning (MRP & Capacity) 2

Question 1

What is 'safety time' in MRP, and how does it differ from safety stock?

Accepted Answer

Safety time adds extra lead time offset; safety stock adds extra inventory quantity

Answer

Safety time offsets the planned receipt date earlier than needed (adding lead time buffer), while safety stock adds a quantity buffer to protect against demand variability.

Question 2

Which lot-sizing rule minimizes total of ordering and carrying costs by evaluating period-by-period combinations?

Accepted Answer

Part period balancing

Answer

Part period balancing combines periods until accumulated carrying cost approximates the ordering cost, balancing the two types of costs.

Question 3

In manufacturing, 'routing' provides which key information for planning?

Accepted Answer

The sequence of operations, work centers, and time standards for producing an item

Answer

A routing defines each operation in the production process, the work center where it is performed, and the setup and run time standards used for scheduling and capacity planning.

Question 4

What is 'queue time' in a manufacturing routing?

Accepted Answer

Time a job waits in front of a work center before processing begins

Answer

Queue time is the waiting time a job experiences in front of a work center and is often the largest component of manufacturing lead time.

Question 5

Which scheduling method assigns jobs to work centers by starting from the due date and working backward?

Accepted Answer

Backward scheduling

Answer

Backward scheduling starts from the required completion date and subtracts lead times to calculate the latest start dates for each operation.

CPIM - Certified in Production and Inventory Management Practice Test

CPIM - Certified in Production and Inventory Management Practice Test

CPIM Detailed Scheduling and Planning (MRP & Capacity) 2