What is physical address and logical address?

What is physical address and logical address?

Logical Address is generated by CPU while a program is running. 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.

What do you mean by physical and logical address in networking?

A physical address is an address that shows the location of memory while a logical address shows the address of the CPU, i.e. the central processor unit generates the Address. One device can have only one physical address. They are constant, so they cannot be changed.

What do we mean by physical and logical address state three differences between them?

The basic difference between Logical and physical address is that Logical address is generated by CPU in perspective of a program. On the other hand, the physical address is a location that exists in the memory unit. The set of all logical addresses generated by CPU for a program is called Logical Address Space.

What do you mean by logical address?

A logical address is generated by CPU while a program is running. Since a logical address does not physically exists it is also known as a virtual address. This address is used as a reference by the CPU to access the actual physical memory location.

What is an example of a logical address?

The logical address space is the range of logical addresses that can be generated by a process running on the CPU. For example, on a machine that uses 16-bit addresses in its instructions, the logical address space would be 0 .. 65535.

What is the purpose of a logical address?

Logical address is used to reference to access the physical memory location. A logical address is generated so that a user program never directly access the physical memory and the process donot occupies memory which is acquired by another process thus corrupting that process.

What is another name for logical address?

Logical addresses are also referred to as virtual addresses. Physical address (also called the real addresses) is the address seen by the memory unit and it allows accessing a particular memory cell in the main memory by the data bus.

What is the length of logical address?

24 bits

How do I find my physical memory address?

To compute the physical address:

1. look up the page number in the page table and obtain the frame number.
2. to create the physical address, frame = 17 bits; offset = 12 bits; then 512 = 29. 1m = 220 => 0 – ( 229-1 ) if main memory is 512 k, then the physical address is 29 bits.

Can IP address reveal identity?

Can IP addresses reveal your identity? No, not outrightly. However, others can piece together bits of your identity, using your IP address and by following your online activity.