2. Digital Hardware

Memory Systems — Quiz

Test your understanding of memory systems with 5 practice questions.

Practice Questions

Question 1

Which advanced non-volatile memory technology offers superior write endurance and faster write speeds compared to traditional Flash memory, making it suitable for critical embedded applications requiring frequent updates and long lifespan?

Question 2

In an embedded system with a multi-level cache hierarchy, if the CPU requests data that results in an L1 cache miss but an L2 cache hit, which of the following best describes the sequence of events and the performance implication?

Question 3

For an embedded system where a real-time operating system (RTOS) kernel and frequently used interrupt service routines (ISRs) demand deterministic and minimal latency execution, which memory characteristic is paramount for the memory storing these critical code segments, and why?

Question 4

An embedded system designer is evaluating memory for a data logger that must store sensor readings every $100 \text{ ms}$ for five years. The system uses Flash memory with a specified write endurance of $100,000$ cycles per block. What is the minimum number of distinct Flash blocks required for the logging area to ensure reliable operation for the entire five-year period, assuming a simple round-robin wear-leveling scheme?

Question 5

In a high-performance embedded system, when the CPU needs to access a large dataset that exceeds the capacity of the on-chip cache, which advanced memory management technique is most effective to minimize the performance impact of fetching this data from main memory?