Member-only story
Introduction
In this post we will cover :
- Name resolution overview and history
- Domain
What exactly is name resolution?
In TCP/IP, it is the IP address that identifies the communication partner, but it is difficult for humans to remember the enumeration of numbers. We want a mechanism that allows you to specify a communication partner with a character string (domain name) that is easy for humans to remember. Under this mechanism, it is necessary to associate an IP address with a domain name, and this mechanism is called name resolution. Under name resolution, the user does not need to be aware of the IP address.
- You don’t have to remember your IP address.
- If only the domain name is fixed, it is not necessary to inform the user when the IP address is changed.
One of the name resolutions is DNS (Domain Name System). The simple mechanism of DNS is that the client inquires about the database that corresponds to the IP address and domain name .
Non-DNS name resolution
Hosts file
In the past, name resolution was performed using a list Hosts file that corresponds the host name and IP address…
