What distinguishes logical addresses from physical addresses?

What distinguishes logical addresses from physical addresses?

• A. Logical addresses are actual locations in physical memory
• B. Logical addresses are generated by the CPU during program execution
• C. Physical addresses refer to virtual memory locations
• D. Logical addresses are used exclusively in networking

Answer: (B)

Logical addresses are indeed generated by the CPU during program execution. When a program is running, the CPU uses logical addresses as a way to represent the memory locations that the program is accessing or manipulating. These logical addresses are then mapped to physical addresses by the memory management unit (MMU). This mapping allows the operating system to use techniques such as paging and segmentation, which can provide enhanced memory management and protection. Each process operates within its own logical address space, meaning that the logical addresses do not directly correspond to actual locations in physical memory until they are translated. This process allows for the abstraction of memory, enabling multiple processes to benefit from memory protection and isolation. Overall, the use of logical addresses is crucial in managing how programs interact with memory while maintaining system stability and security.

Logical addresses are indeed generated by the CPU during program execution. When a program is running, the CPU uses logical addresses as a way to represent the memory locations that the program is accessing or manipulating. These logical addresses are then mapped to physical addresses by the memory management unit (MMU). This mapping allows the operating system to use techniques such as paging and segmentation, which can provide enhanced memory management and protection.

Each process operates within its own logical address space, meaning that the logical addresses do not directly correspond to actual locations in physical memory until they are translated. This process allows for the abstraction of memory, enabling multiple processes to benefit from memory protection and isolation. Overall, the use of logical addresses is crucial in managing how programs interact with memory while maintaining system stability and security.