Practice - Fetching and Executing Instructions
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Practice Questions
Test your understanding with targeted questions
What does the Program Counter (PC) do?
💡 Hint: Think about where instructions come from.
What is the purpose of the Memory Buffer Register (MBR)?
💡 Hint: Consider what happens while moving data.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Program Counter (PC) do?
💡 Hint: Recall the role of the PC in the instruction process.
True or False: The Memory Address Register (MAR) holds the actual instruction.
💡 Hint: Consider what MAR is designed to do.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A CPU has a fetching speed of 4 GHz and a memory speed of 2 GHz. If you fetch an instruction every clock cycle, how does the difference in speeds affect the execution of a program?
💡 Hint: Consider the implications of mismatched speeds.
Describe a scenario where an inefficient fetch-execute cycle could lead to performance bottlenecks in a system with a heavily loaded processor and memory.
💡 Hint: Think about how many processes are requesting instructions and how the cycle handles them.
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Reference links
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