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Questions and Answers
What is the main difference between volatile and non-volatile memory?
What is the main difference between volatile and non-volatile memory?
Volatile memory requires power to maintain data, while non-volatile memory retains data without power.
Why is volatile memory considered faster than non-volatile memory?
Why is volatile memory considered faster than non-volatile memory?
Volatile memory is faster because it operates at lower latencies compared to non-volatile memory.
List two examples of volatile memory.
List two examples of volatile memory.
RAM and CPU caches.
What happens to data stored in volatile memory when power is lost?
What happens to data stored in volatile memory when power is lost?
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Why might faster memory be more expensive per byte?
Why might faster memory be more expensive per byte?
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Which type of memory is typically used for long-term storage?
Which type of memory is typically used for long-term storage?
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What are the implications of using volatile memory in systems?
What are the implications of using volatile memory in systems?
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Identify one main characteristic of non-volatile memory.
Identify one main characteristic of non-volatile memory.
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What general rule applies to the speed and expense of memory types?
What general rule applies to the speed and expense of memory types?
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Study Notes
Overview of File Management
- Key topics include file abstraction, directory abstraction, file systems, and caching.
- Hardware management of storage devices will be covered in the following chapter on I/O and devices.
Volatile vs Non-Volatile Memory
- Volatile memory needs continuous power to preserve data; it loses information when power is cut.
- Non-volatile memory can retain data without power, ensuring information remains intact when turned off.
- Common examples:
- Volatile: RAM, CPU caches.
- Non-volatile: Hard drives (HDD), solid-state drives (SSD).
- General principles:
- Volatile memory typically operates faster than non-volatile memory.
- Higher speed memory tends to be more costly on a per-byte basis.
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Description
This quiz covers Chapter 4 of the Operating Systems and System Software course, focusing on file management. Topics include file abstraction, directory abstraction, file systems, and caching. Prepare to test your knowledge on these essential concepts of operating systems.
