How to separate the host and network identities in an IP address 10

The comrade upstairs spoke in detail. To put it bluntly, the network identity is equivalent to the name of the computer in the local area network, and the IP address is the path used to connect the computer in the network.

There is no difference between a network address and an IP address – the address of the Internet (network address) is represented by a number and is called an IP address. The host address is also an IP address in simple terms.

The first byte of a Class A address represents the network address, and the last three bytes represent the address of the computer in the network. The first two digits of a Class B address represent the network address, and the last two bits represent the address of the computer in the network.

The first three digits of a Class C address represent the network address, and the last one digit represents the address of the computer in the network. Class A addresses are used for very large computer networks, followed by Class B addresses, and Type C addresses are used for small networks.

Divide network bits into host bits

1. The part of the IP address corresponding to subnet mask 1 is the network bit, and the part of the IP address corresponding to subnet mask 0 is the host bit. That is, ip = 32 bit = network bit + host bit = 4 * byte

When the more binary bits are assigned to a host number, the more hosts can be marked, and the fewer networks can be identified, and vice versa.

3. Most of them distinguish network bits and host bits by subnet masks, subnet masks correspond to IP addresses one by one, and subnet masks of 1 are network bits and 0 are host bits.

4. Examples: such as: masks. Network bits The host bit is 2.

In IPv4, a Class A IP address, in which the first segment of the IP address is the network number and the remaining three segments are the host number. And the highest bit of the network address must be "0". Class A addresses range from:

A Class B IP address in IPv4, in which the first two segments of the four-segment IP address are network numbers. If you use binary to represent a Class B IP address, the Class B IP address consists of a 2-byte network address and a 2-byte host address, and the highest bit of the network address must be "10". Range of Class B IP addresses:

In IPv4, the first three segments of the IP address are network numbers, and the remaining segments are host numbers. A Class C IP address consists of a 3-byte network address and a 1-byte host address, and the highest digit of the network address must be "110". Range of Class C IP addresses:

Like what you mentioned.

A network address is a part of an IP address that represents a subnet.

The IP address is associated with a ** number, the network address is equivalent to the first few digits of the area code, and the host address is equivalent to the last few ** numbers.

The distinction between network bits and host bits is as follows:

A Class A IP address means that among the four segments of the IP address, the first segment number is the network number, and the remaining three segments are the local computer number. If the IP address is represented in binary, the Class A IP address consists of a 1-byte network address and a 3-byte host address, and the highest bit of the network address must be a "0".

A Class B IP address is one in which the first two segments of the four segments of the IP address are network numbers. If the IP address is represented in binary, the Class B IP address consists of a 2-byte network address and a 2-byte host address, and the highest digit of the network address must be "10".

A Class C IP address refers to a four-segment IP address in which the first three segments are network numbers and the remaining segments are local computer numbers. If the IP address is represented in binary, the 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".

Historically, Class D IP addresses have been called multicast addresses, i.e., multicast addresses. In Ethernet, a multicast address names a set of sites that should be received by an application in that network. The highest bit of a multicast address must be "1110", ranging from to.

Identification management refers to the establishment of signs in the corresponding posts or areas in order to facilitate management, improve efficiency and reduce potential safety hazards in the process of enterprise production, so as to facilitate standardized management.

On-site management area identification: such as fire protection area, passage; material area; rework area; Empty space area for non-fitting socks; Qualified product area, waiting for inspection area, forest liquid tool fixture area, equipment area, processing area, raw material area, garbage storage area, etc.;

Network identification refers to the identification information of the machine in the network, and for a specific machine, the IP address of the machine is unique in the network.

The host ID is the host name. In the network, the name + address of the host becomes a unique identifier.