Practice Cache Coherency (5.4.3) - ARM Cortex-A9 Processor - Advanced System on Chip
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Cache Coherency

Practice - Cache Coherency

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is cache coherency?

💡 Hint: Think about the consistency of data across different caches.

Question 2 Easy

Name one protocol used for cache coherency in ARM processors.

💡 Hint: This protocol is known by its acronym.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does cache coherency ensure in a multi-core environment?

Data is processed faster
Data remains consistent across cores
Less memory is used

💡 Hint: Think about what happens when different cores access the same data.

Question 2

True or False: The AXI Coherency Extensions are not necessary for cache coherency.

True
False

💡 Hint: Consider the role of protocols in ensuring coherency.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

You have a system with four cores. Core 1 updates a value in its cache. Describe the steps that the ARM Cortex-A9 takes to ensure that all other cores have the updated value.

💡 Hint: Consider the communication process between cores.

Challenge 2 Hard

Discuss the potential issues that may arise in a multi-core processor if cache coherency is not managed effectively. What solutions might be implemented to mitigate these issues?

💡 Hint: Think critically about data access patterns in multi-core systems.

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Reference links

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