The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.

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The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.

1. interrupt request line

2.device driver

3. interrupt handler

4.All of the Mentioned

Posted Date:-2022-03-26 09:32:57

More MCQS Questions and answers

  1. A character stream device transfers _____
  2. I/O is a _________ in system performance.
  3. In a real time system the computer results _______
  4. In a safety critical system, incorrect operation _____
  5. The __________ is used by device controllers to request service.
  6. What is Event latency?
  7. What is the disadvantage of real addressing mode?
  8. A ____ a set of wires and a rigidly defined protocol that specifies a set of messages that can be sent on the wires.
  9. A ________ is a collection of electronics that can operate a port, a bus, or a device.
  10. A ________ is a full duplex connection between a device driver and a user level process.
  11. A block device transfers ________
  12. A keyboard is an example of a device that is accessed through a __________ interface.
  13. A non blocking system call _________
  14. An asynchronous call ______
  15. An I/O port typically consists of four registers status, control, ________ and ________ registers.
  16. Antilock brake systems, flight management systems, pacemakers are examples of _______
  17. Buffering is done to _______
  18. Caching _____
  19. Caching is ________ spooling.
  20. Division by zero, accessing a protected or non existent memory address, or attempting to execute a privileged instruction from user mode are all categorized as ________
  21. For large data transfers, _________ is used.
  22. If one or more devices use a common set of wires to communicate with the computer system, the connection is called ______
  23. If the number of cycles spent busy – waiting is not excessive, then ____
  24. In a ______ real time system, it is guaranteed that critical real time tasks will be completed within their deadlines.
  25. In general the two interrupt request lines are _____
  26. In polling _________
  27. Interrupt latency refers to the period of time ____
  28. Preemptive, priority based scheduling guarantees _______
  29. Priority inversion is solved by use of _________
  30. Real time systems must have _______
  31. Real time systems need to __________ the interrupt latency.
  32. Some of the properties of real time systems include _____
  33. Spooling _______
  34. The ______ register is read by the host to get input.
  35. The ______ register is written by the host to send output.
  36. The ________ can be turned off by the CPU before the execution of critical instruction sequences that must not be interrupted.
  37. The ________ keeps state information about the use of I/O components.
  38. The _________ are reserved for events such as unrecoverable memory errors.
  39. The _________ determines the cause of the interrupt, performs the necessary processing and executes a return from the interrupt instruction to return the CPU to the execution state prior to the interrupt.
  40. The _________ present a uniform device-access interface to the I/O subsystem, much as system calls provide a standard interface between the application and the operating system.
  41. The amount of memory in a real time system is generally ________
  42. The amount of time required for the scheduling dispatcher to stop one process and start another is known as _______
  43. The CPU hardware has a wire called __________ that the CPU senses after executing every instruction.
  44. The hardware mechanism that allows a device to notify the CPU is called ______
  45. The interrupt vector contains _____
  46. The kernel data structures include __________
  47. The most effective technique to keep dispatch latency low is to _______
  48. What is a dedicated device?
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