Question

What is an 'Interrupt' in the context of Operating Systems?

A An error message displayed when a program crashes and all processes currently executing are killed
B A signal sent to the CPU by hardware or software indicating an event that requires immediate attention
C A command used to forcefully terminate a running process since it is consuming a lot of system resources
D A priority flag assigned to a process by the scheduler to let the CPU know about the priority of the process
E A type of memory protection mechanism preventing buffer overflows
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