Input Output Organization MCQs

This section focuses on "I/O Organization" of Computer Organization & Architecture. These Multiple Choice Questions (MCQ) should be practiced to improve the Computer Organization & Architecture skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. Input or output devices that are connected to computer are called ______________.

A. Input/Output Subsystem
B. Peripheral Devices
C. Interfaces
D. Interrupt

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2. How many types of modes of I/O Data Transfer?

A. 2
B. 3
C. 4
D. 5

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3. Keyboard and Mouse Comes under?

A. Input peripherals
B. Output peripherals
C. Input-Output peripherals
D. None of the above

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4. The method which offers higher speeds of I/O transfers is ___________

A. Interrupts
B. Memory mapping
C. Program-controlled I/O
D. DMA

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5. In memory-mapped I/O ____________

A. The I/O devices have a separate address space
B. The I/O devices and the memory share the same address space
C. A part of the memory is specifically set aside for the I/O operation
D. The memory and I/O devices have an associated address space

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6. The ________ circuit is basically used to extend the processor BUS to connect devices.

A. Router
B. Router
C. Bridge
D. None of the above

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7. The ISA is an architectural standard developed by ______.

A. IBM
B. AT&T Labs
C. Microsoft
D. Oracle

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8. The SCSI BUS is used to connect the video devices to a processor by providing a ______________.

A. Single Bus
B. USB
C. SCSI
D. parallel BUS.

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9. Which of the following is true about DMA?

A. DMA is an approach of performing data transfers in bulk between memory and the external device without the intervention of the processor.
B. The DMA controller acts as a processor for DMA transfers and overlooks the entire process.
C. The DMA controller has 3 registers.
D. All of the above

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10. The registers of the controller are ______

A. 16 bit
B. 32 bit
C. 64 bit
D. 128 bit

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