Embedded Real Time Operating System MCQs with answers Page - 4

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A

Admin • 828.03K Points
Coach

Q. The best mode of connection between devices which need to send or receive large amounts of data over a short distance is _____

  • (A) Bus
  • (B) Serial Port
  • (C) Parallel port
  • (D) Isochronous port

A

Admin • 828.03K Points
Coach

Q. The device which is allowed to initiate data transfers on the BUS at any time is called _____

  • (A) Bus Master
  • (B) Processor
  • (C) Controller
  • (D) BUS arbitrator

A

Admin • 828.03K Points
Coach

Q. The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is?

  • (A) Signal handling
  • (B) Exception
  • (C) Interrupts
  • (D) DMA

A

Admin • 828.03K Points
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Q. The PCI BUS supports _____ address space/s.

  • (A) I/O
  • (B) Memory
  • (C) Configuration
  • (D) All of the mentioned

A

Admin • 828.03K Points
Coach

Q. 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.

  • (A) Devices
  • (B) Buses
  • (C) Device drivers
  • (D) I/O systems

A

Admin • 828.03K Points
Coach

Q. An I/O port typically consists of four registers status, control, ________ and ________ registers.

  • (A) system in, system out
  • (B) data in, data out
  • (C) flow in, flow out
  • (D) input, output

A

Admin • 828.03K Points
Coach

Q. The CPU hardware has a wire called __________ that the CPU senses after executing every instruction.

  • (A) interrupt request line
  • (B) interrupt bus
  • (C) interrupt receive line
  • (D) interrupt sense line

A

Admin • 828.03K Points
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Q. 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.

  • (A) interrupt request line
  • (B) device driver
  • (C) interrupt handler
  • (D) All of Above

A

Admin • 828.03K Points
Coach

Q. The usual BUS structure used to connect the I/O devices is ___________

  • (A) Star BUS structure
  • (B) Multiple BUS structure
  • (C) Single BUS structure
  • (D) Node to Node BUS structure

A

Admin • 828.03K Points
Coach

Q. The method of accessing the I/O devices by repeatedly checking the status flags is ___________

  • (A) Memory-mapped I/O
  • (B) Program-controlled I/O
  • (C) I/O mapped
  • (D) None of the mentioned

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