1. what are the necessary controls in order to keep the vendor file valid?

2. what are the advantages and disadvantages of using electronic data interchange?

3. what are the physicsl and IT controls that address the risk of receiving incorrect items? explain how each control helps in preventing the risk.

4. how are cash disbursement vouchers used as a form of internal control?

5.do you think it is practicable to use blind copy PO as a form of internsl control? Explain.

6. must allnpurchasesnbe approved or authorized by the purchasing department head? explain.

7. what is anpurchase requisition? what are the implications if the company does not prepare a purchase requisition and communicates the need for inventory directly to the purchase order function?