Quick Answer: What Is The Difference Between Logical And Physical Address?

What is a physical address example?

A physical address is a real street address that can be used as a personal or business mailing address.

Unlike a PO Box, a physical address can receive unrestricted mail and parcels from carriers other than USPS, such as UPS, FedEx, DHL, and Amazon..

How do you find physical and logical addresses?

To compute the physical address:look up the page number in the page table and obtain the frame number.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.

Who generates logical address?

Logical address is address generated by CPU during execution whereas Physical Address refers to location in memory unit(the one that is loaded into memory). Note that user deals with only logical address(Virtual address). The logical address undergoes translation by the MMU or address translation unit in particular.

What happens if 2 devices have the same MAC address?

If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. … Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.

What is physical address in operating system?

In computing, a physical address (also real address, or binary 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.

Is IP address logical or physical?

Logical vs. An IP address is a logical address that is assigned by software residing in a server or router (see DHCP). The physical address is built into the hardware (see MAC address).

Why IP address is called logical address?

An IP address is a logical address for the network layer of the host connected to the network. … As an example, most devices on a network will have a logical interface configured as a loop back interface. This is purely a logical interface with no physical interface mapping.

How do I find a logical address?

we know that logical address spaces is = total no of bits required to represent total no of pages + bits required to map page offset . Hence total bits required = 3 (because total no of pages is 8 and to represent you need three bits) + 10 (page offset is 1024 so you need 10 bits) = 13 bits all total.

Is logical address same as IP address?

Every network device has two types of addresses, one called the logical address — in most cases this is the IP address — and the other one being the physical address — also known as the MAC address. The IP address is an address bound to the network device, i.e., computer, via software.

What is the difference between logical and physical?

The logical address is used like a reference, to access the physical address. The fundamental difference between logical and physical address is that logical address is generated by CPU during a program execution whereas, the physical address refers to a location in the memory unit.

Why do we need logical and physical address?

The need of logical address is to securely manage our physical memory. … 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 meant by logical address?

In computing, a logical address is the address at which an item (memory cell, storage element, network host) appears to reside from the perspective of an executing application program. A logical address may be different from the physical address due to the operation of an address translator or mapping function.