Question

Consider a typical process P in the critical section. Arrange the following statements of code to make a valid general structure.
(A). Critical section
(B). Remainder section
(C). Entry section
(D). Exit section

• A. (C), (B), (A), (D)
• B. (C), (A), (B), (D)
• C. (C), (A), (D), (B)
• D. (C), (B), (D), (A)

Hint:

In the general structure of critical section code, Entry comes before Critical, and Exit comes after Critical, followed by the Remainder section.

Answer 1

The Correct Option is A

Step 1: Section Definitions.
- Critical section (C): Accesses shared resources. 
- Entry section (A): Requests access to the critical section. 
- Remainder section (B): Performs other tasks after the critical section. 
- Exit section (D): Manages the exit from the critical section. 
 

Step 2: Correct Sequence. 
A process follows this order for critical section management: 

- Enters Entry section (A) to check conditions. 

- Proceeds to Critical section (C) to access shared resources. 

- Moves to Exit section (D) to release resources. 

- Completes other tasks in the Remainder section (B).

Step 3: Final Order. 
The correct sequence of sections is (A), (C), (D), (B).