Each interface on the Internet must have a unique i n T e R n E address (also called an I-P address).
The I p address is longer than the bit. I P address has a certain structure, five different types of Internet address format 1-5 is shown.
These 3 2-bit addresses are usually written in four decimal digits, where
Each integer corresponds to one byte. This representation is called "point 10
Binary notation (dotted decimal notation) "
Since each interface on the Internet must have a unique I p address, there must be a management authority for access to the mutual
Networked Network allocation I p address. The governing body is the Internet Network Information Center (information
C e N T r e), called i n T e r n i C. I n T e R n i c assigns only the network number. The allocation of the host number is the responsibility of the system administrator.
I n T e R n e t registration Service (I p address and D n s domain name) used to be the responsibility of n i c, whose network address is n i c. D d N. M i L.
1 9 9 3 April 1, i n t e R n i c was established. Now, N I C is only responsible for processing the registration request of the Defense data network, all other
The i n T e R n e t user registration request is handled by the i n T e R n i c, whose URL is: R S. I n T e r n i c. N e T.
In fact I N T e r n i c consists of three parts: the registration Service (R S). I n T e r n i c. N e t), directory and database service
Services (d S. I n T e r n i c. N e t), as well as information services (i s. I n T e r n i c. N e t).
There are three types of I-P addresses: unicast addresses (intended for a single host), broadcast addresses (destination for all hosts on a given network)
and multicast addresses (all hosts within the same group as the destination)
TCP/IP---The address of the Internet