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Direct Memory Access (DMA) improves I/O efficiency by:
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Subject
Computer Science
Topic
Operating Systems
Subtopic
I/O Management
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hard
Allowing devices to transfer data to memory without continuous CPU involvement
Compressing all data
Requiring the CPU to transfer every byte
Disabling interrupts permanently
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Explanation
DMA lets a controller move data between a device and memory directly, freeing the CPU during the transfer.…
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Concept Behind This Question
This question focuses on the concept of I/O Management under the broader topic of Operating Systems.
Related key concepts: operating systems, i/o-management.
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Question Details
- Subject:
- Computer Science
- Topic:
- Operating Systems
- Subtopic:
- I/O Management
- Difficulty:
- hard
- Source:
- Silberschatz Operating System Concepts 10th Ed Ch.12
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