What is the A.B.C class network how to differentiate and divide

What is the A.B.C class network how to differentiate and classify reports of violations of whistleblower complaints | Share | 2006-05-20 13:39 fuliang907 | Browse 15,948 Times Network

The highest bit of the network address must be "10" is the binary form?
Class B Address: 172.16.0.0~172.31.255.255 

class C Address: 192.168.0.0~192.168.255.255 Why the first two bits of Class C please advise.

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IP address ABC concept when two computers on a network communicate with each other, some additional information is contained in the packets they transmit, which is the address of the computer that sent the data and the computer that received the data. 

When there is an IP protocol-based communication in the network, these send and receive data addresses are IP addresses. Basic address format The IP network now uses a 32-bit address in dotted decimal notation, such as 172.16.0.0. 

The address format is: IP address = Network address + host address or IP address = host address + subnet address + host address. IP Address type when initially designing the internetwork, each IP address consists of two identifiers (IDs), that is, the network ID and the host ID, for ease of addressing and structuring the network in a hierarchical format. All hosts on the same physical network use the same network ID, and one host on the network (including workstations on the network, servers, routers, etc.) has a host ID corresponding to it. 

The IP address is divided into 5 types according to the network ID, Class A address, Class B address, Class C address, Class D address, and Class E address. 1. Class A IP address a class A IP address consists of a 1-byte network address and a 3-byte host address, the highest bit of the network address must be "0", the address range from 1.0.0.0 to 126.0.0.0. 

There are 126 available Class A networks, each of which can hold more than 100 million hosts. 2. Class B IP Address a class B IP address consists of a 2-byte network address and a 2-byte host address, the highest bit of the network address must be "10", and the address range is from 128.0.0.0 to 191.255.255.255. 

There are 16,382 available Class B networks, each of which can hold more than 60,000 hosts. 3. Class C IP Address a class C IP address consists of a 3-byte network address and a 1-byte host address, and the highest bit of the network address must be "110". range from 192.0.0.0 to 223.255.255.255. 

Class C network can reach more than 2.09 million, each network can accommodate 254 hosts. 4. 

Class D addresses are used for multipoint broadcasts (multicast). Class D IP Address the first byte begins with "Lll0", which is a specially reserved address. It does not point to a particular network, which is currently used in multipoint broadcasts (multicast). 

Multicast addresses are used to address a group of computers at a time, identifying a group of computers that share the same protocol. 5. 

Class E IP address starts with "llll0" and holds for future use. Full 0 ("0. 0. 0. 0 ") address corresponds to the current host. Full "1" IP address ("255". 255. 255. 

255 ") is the broadcast address of the current subnet. Of the 3 main types of IP addresses, 3 regions are reserved forAs a private address, its address range is as follows: Class A address: 10.0.0.0~10.255.255.255 Class B Address: 172.16.0.0~172.31.255.255 Class C Address: 192.168.0.0~192.168.255.255