UGC NET CSE | January 2017 | Part 3 | Question: 1

Question

Which of the following is an interrupt according to temporal relationship with system clock?

• A. Maskable interrupt
• B. Periodic interrupt
• C. Division by zero
• D. Synchronous interrupt

Answer 1

Ans is (4) Synchronous interrupt

Classification of Interrupts According to the Temporal Relationship with System Clock:

1. Synchronous Interrupt: The source of interrupt is in phase to the system clock is called synchronous interrupt. In other words interrupts which are dependent on the system clock. Example: timer service that uses the system clock.
2. Asynchronous Interrupts: If the interrupts are independent or not in phase to the system clock is called synchronous interrupt.

Exception: unplanned interrupts while executing a program is called Exception. For example: while executing a program if we got a value which should be divided by zero is called a exception

Maskable Interrupt: The hardware interrupts which can be delayed when a much highest priority interrupt has occurred to the processor.

Periodic Interrupt: If the interrupts occurred at fixed interval in timeline then that interrupts are called periodic interrupts

Answer 2

synchronous interrupt because these interrupt generated by hardware

Answer 3

D. SYNCHRONOUS INTERRUPT

explanation:

Classification of Interrupts According to Periodicity of Occurrence:

1. Periodic Interrupt: If the interrupts occurred at fixed interval in timeline then that interrupts are called periodic interrupts
2. Aperiodic Interrupt: If the occurrence of interrupt cannot be predicted then that interrupt is called aperiodic interrupt.

Classification of Interrupts According to the Temporal Relationship with System Clock:

1. Synchronous Interrupt: The source of interrupt is in phase to the system clock is called synchronous interrupt. In other words interrupts which are dependent on the system clock. Example: timer service that uses the system clock.
2. Asynchronous Interrupts: If the interrupts are independent or not in phase to the system clock is called asynchronous interrupt.