Practice Mode Of Transfer (25.2.3) - Programmed I/O Overview - Computer Organisation and Architecture - Vol 3

Practice: Mode of Transfer

Lesson 25.2.3Programmed I/O Overview

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9 questions

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6 sample questions

Question 1.
What does programmed I/O involve?
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Think about how the CPU checks devices before transferring data.
Question 2.
What is the difference between memory-mapped I/O and isolated I/O?
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Consider how each method handles device identification.
3Question 3.
What is programmed I/O?
- A method where CPU directly controls I/O
- A method involving CPU polling
- A type of hardware interface
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Consider what activity the CPU must do in programmed I/O.
4Question 4.
True or False: In isolated I/O, the memory and I/O device address spaces are combined.
- True
- False
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Think about the space allocation for devices.
Question 5.
Design a simple system that uses both programmed I/O and interrupt-driven I/O, detailing how each method will be employed.
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Consider which devices require constant checks and which can notify the CPU only when action is needed.
Question 6.
Discuss the implications of using memory-mapped I/O in a system with numerous I/O devices versus isolated I/O.
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Think about how many devices can realistically be connected in both scenarios and the impact on system performance.

5 more questions in this section. Enroll free to practise them all.