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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is programmed I/O?
💡 Hint: Look for how the CPU interacts with devices in a direct manner.
Question 2
Easy
Define polling.
💡 Hint: Think about a wait-and-see method employed by the CPU.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main drawback of polling in programmed I/O?
- Increased efficiency
- Wasted CPU time
- Immediate device readiness
💡 Hint: Think about what happens when the CPU is waiting.
Question 2
True or False: Memory-mapped I/O and isolated I/O use the same addressing scheme.
- True
- False
💡 Hint: Consider how devices are recognized by the CPU.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Analyze the effects of CPU time wastage due to polling on system performance and suggest improvements.
💡 Hint: Consider productivity in environments relying on I/O.
Question 2
Design a simple programmed I/O routine for a CPU to read from an input device and explain each step.
💡 Hint: Break down the routine into logical sequences.
Challenge and get performance evaluation