An interrupt may not occur when (A) a hardware component encounters an error or failure (B) a data transfer between a peripheral device and memory is completed (C) a user program requests to execute a system call (D) a disk operation is completed (E) the computer system intentionally turns off the interrupts
Question
An interrupt may not occur when (A) a hardware component encounters an error or failure (B) a data transfer between a peripheral device and memory is completed (C) a user program requests to execute a system call (D) a disk operation is completed (E) the computer system intentionally turns off the interrupts
Solution
The only situation in which an interrupt may not occur is (E) the computer system intentionally turns off the interrupts.
Here's why:
(A) A hardware component encountering an error or failure - This would typically generate an interrupt to alert the system that something has gone wrong.
(B) A data transfer between a peripheral device and memory is completed - This would generate an interrupt to let the system know that the data transfer has been completed and the peripheral device is ready for more data or can be used for another operation.
(C) A user program requests to execute a system call - This would generate an interrupt because the system call needs to be handled by the operating system.
(D) A disk operation is completed - This would generate an interrupt to let the system know that the disk operation has been completed and the disk is ready for more data or can be used for another operation.
(E) The computer system intentionally turns off the interrupts - In this case, no interrupts would be generated because the system has intentionally turned them off. This might be done for a variety of reasons, such as to prevent interruptions during a critical operation.
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