Question

1. What is the differences between physical and logical address, and why do we need logical addresses?

2.Discuss IPv4 and IPv6 according to it capabilities to address a single device on any network in the world
and how it correlates to the Internet of Things (IoT).

Answer 1

1)

Logical address: known as the address generated by CPU

Briefly

Let's consider group of computers are connected together to share data/information for sending data to perticuler computer is done by an address that is known as logical address.

With logical address we fetch data from another computer.

Physical address is is the address location of memory with in the computer.

By using physical address we fetch the data with in the memory.

Hence logical address are more prominent than physical addresses sice logical address provides information flow path between two computers.

2)

IPv4 is an logical address of a computer

It is a 32 bit number with this address type we can connect the devices up to 2^32 it's approximately 4.2 billon devices

This is not enough in the case of IoT since the world exist with million s or billion device.

Hence we go with an address type which effectively gives such huge number of address es to connect all things.

IPv4 is an address type of 128 bit width

With this type of addressing we can connect upto 2^128

divices it's a very large number hence for internet of things IPv4 addressing is best.