Contents
- 1 How do you map virtual addresses to physical addresses?
- 2 WHO maps virtual to physical address at runtime?
- 3 Who converts virtual address to physical address?
- 4 Is responsible for the run time mapping from virtual to physical addresses Mcq?
- 5 What is virtual address and physical address?
- 6 What is a virtual address?
- 7 What is virtual address space?
How do you map virtual addresses to physical addresses?
The run time mapping between Virtual address and Physical Address is done by a hardware device known as MMU. In memory management, the Operating System will handle the processes and move the processes between disk and memory for execution . It keeps track of available and used memory.
How is virtual address translation to physical address?
The CPU manages translation of virtual to physical addresses using its Memory Management Unit (MMU). A virtual address is specified as a offset from the start of a memory segment; these segments are used by the kernel and user processes to hold their text, stack, data, and other regions.
WHO maps virtual to physical address at runtime?
memory management unit
The runtime mapping from virtual to physical address is done by the memory management unit (MMU) which is a hardware device.
Does the Memory-Management Unit maps virtual address to physical address?
Mapping of virtual addresses to physical addresses is also called as address translation or address binding. OS divides physical memory into partitions. Different partitions can have different sizes. The memory management unit (MMU) of the CPU contains a relocation register.
Who converts virtual address to physical address?
Virtual addresses (or logical addresses) are addresses provided by the OS to processes. Programs use virtual addresses. As a program runs, the hardware (with help from the operating system) converts each virtual address to a physical address.
Can references to two different virtual addresses map to the same physical address?
Hence, it is possible for two virtual addresses VA1 and VA2 to point to the same physical address PA.
Is responsible for the run time mapping from virtual to physical addresses Mcq?
Discussion Forum
| Que. | The run-time mapping from virtual to physical addresses is done by a hardware device called |
|---|---|
| b. | CPU Management Unit |
| c. | Memory Management Unit |
| d. | Event Management Unit |
| Answer:Memory Management Unit |
What is the hardware device that maps virtual to physical addresses?
Memory-management unit
Memory-management unit (MMU) – hardware device that maps virtual to physical address. In MMU scheme, the value in a relocation register is added to every address generated by a user process at the time it is sent to memory. The user program deals with logical addresses; it never sees the real physical addresses.
What is virtual address and physical address?
The logical address is virtual address as it does not exist physically, therefore, it is also known as Virtual Address. Physical Address identifies a physical location of required data in a memory. The user never directly deals with the physical address but can access by its corresponding logical address.
Can 2 processes have same virtual address?
2 diff process can have same virtual memory address. This is because each process has its own page table. Each process thinks it as 4Gb memory on a 32-bit machine. So both P1 and P2 can access address 0xabcdef – but the physical memory location might be different.
What is a virtual address?
A virtual address is a binary number in virtual memory that enables a process to use a location in primary storage (main memory) independently of other processes and to use more space than actually exists in primary storage by temporarily relegating some contents to a hard disk or internal flash drive.
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What is virtual address space?
In computing, a virtual address space ( VAS) or address space is the set of ranges of virtual addresses that an operating system makes available to a process. The range of virtual addresses usually starts at a low address and can extend to the highest address allowed by the computer’s instruction set architecture…
What is physical address?
Physical address. In computing, a physical address, is a memory address that is represented in the form of a binary number on the address bus circuitry in order to enable the data bus to access a particular storage cell of main memory, or a register of memory mapped I/O device.