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How many regions are created by the memory range in the ARM architecture?
  • a)
    4
  • b)
    8
  • c)
    16
  • d)
    32
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
How many regions are created by the memory range in the ARM architectu...
Explanation: The memory protection unit in the ARM architecture divides the memory into eight separate regions. Each region can be small as well as big ranging from 4 Kbytes to 4 Gbytes.
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Most Upvoted Answer
How many regions are created by the memory range in the ARM architectu...
The ARM architecture uses a memory management unit (MMU) to manage memory and provide memory protection. The MMU divides the memory into regions, and the number of regions created by the memory range in the ARM architecture is 8.

Explanation:
The ARM architecture divides the memory into multiple regions using the MMU. Each region is defined by a base address and a size. The MMU uses these regions to provide memory protection and control access to different parts of the memory.

The number of regions created by the memory range in the ARM architecture depends on the number of bits used to define each region. In the ARM architecture, 3 bits are used to define each region. This means that there are 2^3 = 8 possible combinations of these 3 bits, resulting in 8 regions.

The 3 bits used to define each region are part of the MMU's translation table entry (TTE) format. The TTE format specifies various attributes for each region, such as the base address, size, access permissions, and caching attributes.

By using the 3 bits in the TTE format, the MMU can divide the memory range into 8 regions. Each region can have a different base address and size, allowing for fine-grained control over memory access and protection.

The 8 regions created by the memory range in the ARM architecture provide flexibility and granularity in memory management. They allow for efficient memory protection and control, ensuring that different parts of the memory are accessed only according to their defined permissions.

In conclusion, the memory range in the ARM architecture creates 8 regions using the MMU's translation table entry format. These regions provide memory protection and control, allowing for efficient memory management in ARM-based systems.
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