Consider the Case of a Home Construction Company with Two

question 16

Multiple Choice

Consider the case of a home construction company with two application programs,purchasing (P1) and sales (P2) ,which are active at the same time.They each need to access two files,inventory (F1) and suppliers (F2) ,to update daily transactions.The following series of events will cause a deadlock.Fill in the missing event in the sequence.
1) Purchasing (P1) accesses the supplier file (F2) .
2) Sales (P2) accesses the inventory file (F1) .
3) Purchasing (P1) doesn't release the supplier file (F2) and requests the inventory file (F1) ,but P1 is blocked because F1 is being held by P2.
4) Meanwhile,____

• A) sales (P2)doesn't release the inventory file (F1)but requests the supplier file (F2)
• B) sales (P2)does release the inventory file (F1)and then requests the supplier file (F2)
• C) purchasing (P1)does release the supplier file (F2)which is then requested by sales (P2)
• D) purchasing (P1)exits

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Definitions:

Experimental Unit

The smallest division of the experimental material such that any two units are independent and can be assigned to different treatments.

Cage

A structure of bars or wires in which animals or birds are confined.

Confounding Variable

A variable outside of the researcher's control that can affect the results of a study, potentially leading to misleading conclusions.

Lurking

In statistics, a lurking variable is one that is not directly observed but can influence the relationship between the studied variables.