Embedded Real Time Operating System MCQs with answers Page - 5

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Admin • 833K Points
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Q. The classification of BUSes into synchronous and asynchronous is based on __________

  • (A) The devices connected to them
  • (B) The type of data transfer
  • (C) The Timing of data transfers
  • (D) None of the mentioned

A

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Q. In synchronous BUS, the devices get the timing signals from __________

  • (A) Timing generator in the device
  • (B) A common clock line
  • (C) The Timing of data transfers
  • (D) None of the mentioned

A

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Q. The use of spooler programs or _______ Hardware allows PC operators to do the processing work at the same time a printing operation is in progress.

  • (A) Register
  • (B) memory
  • (C) Buffer
  • (D) Cpu

A

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Q. Preemptive, priority based scheduling guarantees ____________

  • (A) hard real time functionality
  • (B) soft real time functionality
  • (C) protection of memory
  • (D) none of the mentioned

A

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Q. What is Event latency?

  • (A) the amount of time an event takes to occur from when the system started
  • (B) the amount of time from the event occurrence till the system stops
  • (C) the amount of time from event occurrence till the event crashes
  • (D) the amount of time that elapses from when an event occurs to when it is serviced.

A

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Q. Real time systems need to __________ the interrupt latency.

  • (A) minimize
  • (B) maximize
  • (C) not bother about
  • (D) none of the mentioned

A

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Q. The amount of time required for the scheduling dispatcher to stop one process and start another is known as ______________

  • (A) event latency
  • (B) interrupt latency
  • (C) dispatch latency
  • (D) context switch

A

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Q. The most effective technique to keep dispatch latency low is to ____________

  • (A) provide non preemptive kernels
  • (B) provide preemptive kernels
  • (C) make it user programmed
  • (D) run less number of processes at a time

A

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Q. Antilock brake systems, flight management systems, pacemakers are examples of

  • (A) safety critical system
  • (B) hard real time system
  • (C) soft real time system
  • (D) safety critical system and hard real time system

A

Admin • 833K Points
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Q. In real time operating system ____________

  • (A) all processes have the same priority
  • (B) a task must be serviced by its deadline period
  • (C) process scheduling can be done only once
  • (D) kernel is not required

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