Practice Identifying The I/o Module (25.2.1) - Programmed I/O Overview

Practice: Identifying the I/O Module

Lesson 25.2.1Programmed I/O Overview

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10 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 interacts with devices.
Question 2.
What does polling refer to?
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Consider the action of waiting for a friend.
3Question 3.
What does programmed I/O require the CPU to do?
- Continuously check device status
- Directly connect to all devices
- Run multiple tasks simultaneously
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Think about how the CPU interacts with the devices.
4Question 4.
True or False: In memory-mapped I/O, devices have their own address space.
- True
- False
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No hint provided
Question 5.
Consider a scenario where a CPU is using programmed I/O to communicate with 5 devices. How might this affect overall system performance, and what alternative approaches could be employed?
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Think about the trade-offs of using one method over another in terms of efficiency.
Question 6.
Given a set of devices using memory-mapped I/O, how would the interaction differ if isolated I/O were used? Illustrate an example with device addressing.
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Consider how addressing schemes influence system architecture.

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