Question

A section of code that may only be executed by one process at any one time is?

• A. CPM
• B. Critical resource
• C. Critical region
• D. Gray code
• E. None of the above

Answer 1

The correct option is C Critical region

A section of code that may only be executed by one process at any one time is Critical region

In concurrent programming, concurrent accesses to shared resources can lead to unexpected or erroneous behavior, so parts of the program where the shared resource is accessed are protected. This protected section is the critical section or critical region.

A Critical Section is a code segment that accesses shared variables and has to be executed as an atomic action. It means that in a group of cooperating processes, at a given point of time, only one process must be executing its critical section.