$1.$ What is the difference between raw material inventory, work$-$in$-$process $($WIP$)$ inventory,

and finished goods inventory?

$2.$ What is the difference between independent demand and dependent demand? Give several

examples ofeach.

$3.$ Whatlevel is an end itemin a bill ofmaterial? What is a low$-$level code? Whatis the

low$-$level code for an enditem? Draw a bill ofmaterial for which component$200$ occurs on

two different levels and has a low$-$level code ofthree.

$4.$ What is the master production schedule, and what does itprovide for an MRP system?

$5.$ How do you convert gross requirements to net requirements? Whatis this procedure called?

$6.$ Why are scheduled receipts adjusted before any net requirements are computed?

$7.$ Which lot$-$sizing rule results in the least inventory?

$8.$ What are the tradeoffs considered in lot sizing?

$9.$ In what respect is the Wagner$-$Whitin algorithm optimal? How is it sometimes impractical

$($i$.$e$.,$ what does it ignore$)?$

$10.$ Which ofthe following lot$-$sizing rules possess the so$-$called Wagner$-$Whitin property?

a$.$ Wagner$-$Whitin

b$.$ Lot$-$for$-$lot

c$.$ Fixed orderquantity $($e$.$g$.,$ all jobs have size of$50)$

d$.$ Fi$]>$ed order period

e$.$ Part$-$period balancing

$11.$ How do planned leadtimes differ from actual lead times? Which is typically bigger, the

planned lead time or the average actual lead time? Why?

$12.$ What assumption in MRP makes the implicit assumption ofinfinite capacity? What is the

impact ofthis assumption on planned lead times? On inventory?

$13.$ What is the difference between a planned order receipt and a planned order release? How

does a scheduled receipt differ from a planned order release?

$14.$ What is the difference between a scheduled receipt and a firm planned order? How are they

similar?

$15.$ Why do we performall the MRPprocessing for onelevel before going to the next$-$lower

level? What would happen ifwe did not?

$16.$ Whatis the bill$-$of$-$material explosion?

$17.$ What is pegging? How does ithelp inbottom$-$up replanning?

$18.$ Whatis the effect ofhaving safety stock when computing netrequirements?

$19.$ What is the difference between having a safety lead time ofone period and simply adding

one period to the plannedlead time? Whatis the same?

$20.$ Whatis nervousness in an MRP system? How is it caused? Why is it bad? What are some

things that can be done to prevent it$?$

$21.$ Whatis MRPII? Why was itcreated?

$22.$ Why mightrough$-$cut capacity planning be optimistic? Why might it be pessimistic?

$23.$ Why iscapacity requirements planning not very accurate? What assumptions are made in

CRPthat are the same as those in MRP$?$

$24.$ Whatis the purpose ofdispatching? What are dispatching rules? Why does shortest process

time seem to workpretty well? When does earliest due date work well?

$25.$ Whatis the purpose ofinput$/$output control? Why is itoften "too little, too late"?