What is the Internet Why do you need a network As the title says, thank you

Network: English generally translates as: Internet or network.

To put it simply, it is to use physical links to connect various isolated workstations or hosts together to form a data link, so as to achieve the purpose of resource sharing and communication. Any system that connects multiple computer systems with different geographical locations and independent functions through communication equipment and lines, and realizes network resource sharing with well-functioning network software (network protocol, information exchange mode, network operating system, etc.) can be called a computer network. The word network has a variety of meanings and can be interpreted as:

1. Flow network is also referred to as network. It is generally used to model pipeline systems, transportation systems, and communication systems. Sometimes it refers specifically to a computer network, or specifically to a system in which the Internet is made up of related individuals, such as:

Networks, transportation networks, political networks. 2. A graph composed of nodes and connections. Indicates the objects of study and their interconnections.

Sometimes a line with an arrow indicates that there is some kind of sequential relationship from one node to another. The numerical value marked next to a node or line is called a point weight or line weight, and sometimes no number is marked. In mathematical language, a network is a type of graph, and it is generally considered to refer specifically to a weighted graph.

In addition to the mathematical definition, the network also has a specific physical meaning, that is, the network is a model abstracted from the same type of practical problem, and it is customary to call it a type of network, such as switch network, transportation network, communication network, planning network, etc. In short, a network is a model that is abstracted from similar problems and expressed and studied by graph theory in mathematics. A computer network is a system that uses communication lines and communication equipment to connect multiple autonomous computer systems distributed in different locations to each other, and shares hardware, software, and data resources according to a common network protocol.

There are four elements to realize the network: 1. Communication lines and communication equipment 2. Computers with independent functions 3. Network software software support 4. Data communication and resource sharing.

The network is the bridge that connects you, me and him.

Generally, it refers to the "three networks": telecommunication network, cable television network, and computer network. In the narrow sense, it is the Internet.

But what is inseparable from people's lives is the computer network, and the average person's understanding of the network is about the computer network.

A computer network is a system that uses communication lines and communication equipment to connect multiple autonomous computer systems distributed in different locations, share hardware and software according to a common network protocol, and finally realize resource sharing.

The Four Elements of Networking:

1. Communication lines and communication equipment;

2. Computers with independent functions;

3. Network software support;

4. Realize data communication and resource sharing.

Refers to a collection of computers connected to each other by cable, wire or wireless communication.

A network is made up of nodes and wires that represent objects and their interconnections. Mathematically, a network is a type of graph, and it is generally considered to refer specifically to a weighted graph.

坌's network interpretation is: 坌rǒngbèn 坌busy. One of Song Sushi's "Answer to Fan Mengde": "Recently, I have felt that the thieves are often full of prison lawsuits, and the new French side has done it. ”。

坌's network interpretation is: 坌rǒngbèn 坌busy. One of Song Sushi's "Answer to Fan Mengde":

Recently, I have felt that the thieves' prison lawsuits are often full, and the new French side has also done so. ”。The note is that the sound is:

Pinyin is: rǒngbèn. The structure is:

upper and lower structure) 坌 (upper and lower structure).

What is the specific explanation of 坌, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Busy. 2. Citations and Explanations.

Busy. Quoting one of Song Sushi's "Answering Fan and Trembling Dreams": "Recently, the thieves have been in prison, and the new law has been done. ”

About the idiom of 坌.

He thousands of miles to talk about the heart, the lack of skills, the fear of walking alone, the island is thin, the suburbs are cold, the words are not up to the meaning, the electric light is towards the dew, the bucket, the ruler, the cloth, the east and the west, this is scattered.

Words about 坌.

Dahan is a fine entry point, Jin Lacking Shu Island, thin suburbs, cold fighting, Su ruler, cloth, electric light, Zhao Lu, thousands of miles of words, not reaching the meaning of the lonely step, at that time, the Grand Duke was selfless and frightened.

The network explanation of 螽 is: 螽 qìzhōng 螽虫名. Green or tawny.

The head is pointed, the hindwings are large, and the zaza makes a sound when flying. The leg joints and tibia of the hind limbs are quite long and good at jumping. Catch its hind limbs, want to jump, so as to make the shape of the rice, so commonly known as the rice Lang.

Ming Li Shizhen's "Compendium of Materia Medica: Worm Three· Mantis": "Like a mantis and the slender elder is called a mantis." ”。

The network explanation of 螽 is: 螽 qìzhōng 螽虫名. Green or tawny.

The head is pointed, the hindwings are large, and the zaza makes a sound when flying. The leg joints and tibia of the hind limbs are quite long and good at jumping. Catch its hind limbs, want to jump, so as to make the shape of the rice, so commonly known as the rice Lang.

Ming Li Shizhen's "Compendium of Materia Medica: Worm Three· Mantis": "Like a mantis and the slender elder is called a mantis." ”。

The structure is: (upper and lower structure) mantis (upper and lower structure). The phonetic pronunciation is:

一 Pinyin is: qìzhōng.

What is the specific explanation of the mantis, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Bug name. Green or tawny. The head is pointed, the hindwings are large, and the zaza makes a sound when flying. The leg joints and tibia of the hind limbs are quite long and good at jumping. Catch its hind limbs, want to jump, so as to make the shape of the rice, so commonly known as the rice Lang.

2. Citations and Explanations.

Bug name. Green or tawny. The head is pointed, the hindwings are large, and the zaza makes a sound when flying.

The leg joints and tibia of the hind limbs are quite long and good at jumping. Catch its hind limbs, want to jump, so as to make the shape of the rice, so commonly known as the rice Lang. Quoting Li Shizhen's "Compendium of Materia Medica, Insect Three· Mantis":

It looks like a mantis, and the slender elder is called a mantis. ”

3. Chinese dictionary.

The name of the animal. An insect. The body is long, green or greenish and yellowish-brown, the head is long conical, the antennae are short, and there are compound eyes. Long hind limbs and good at jumping. It squeaks when flying.

About the idiom of mantis.

Unexpectedly, the expedition of the mantis was unexpected, and the mantis Yanqing insects chirped, and the mantis jumped Bodao, and there was no name, a penny, and the grass was not taken care of, and he fled in a hurry.

Words about mantises.

Bo Dao did not accompany Hui Gai'er, Si Yanqing fled in a hurry, and he was nameless, and the insects chirped and leaped, and Si Zhenyu unexpectedly looked down on the people.

The online interpretation of 屮 is: 屮 屮 is a Chinese word, pronounced chègǎo, which refers to draft.

The online interpretation of 屮 is: 屮 屮 is a Chinese word, pronounced chègǎo, which refers to draft. Pinyin is: chègǎo. The structure is: 屮 (nested structure) (upper and lower balance structure). The phonetic pronunciation is:

What is the specific explanation of 屮, we will introduce it to you through the following aspects:

1. Explanation of terms [click here to view the details of the plan].

Draft. Unwritten manuscripts.

2. Citations and Explanations.

Vertical hand-drafts. Unwritten manuscripts. Quoting from "Hanshu Biography of Dong Zhongshu": "Zhong Shu pushed his intentions at home, but before he went up, the master father waited for Zhong Shu, saw it privately, was jealous, and stole his book and played it. Yan Shigu notes: "The drafting is also. ”

Idioms about 屮.

The words are not up to the point, and he Qianli shook his head, and his brain was lacking, and the island was thin, and the suburbs were cold, and he was frightened, and he was afraid to talk about his heart, and he intercepted the hair file and the electric light was dewed.

The word about 屮 is a wide friend.

Frightened and afraid, the words are not up to the meaning of the island, the suburbs are cold, the knees are short, the heart is selfless, the prince is selfless, he is thousands of miles away, the gold is lacking, the hair is intercepted, the file is shaken, and the brain is pulling and pulling.

The network of Kuanqian Chang in the network refers to ().

a.It's a local area network.

b.Is it a metro repentance or.

c.It's a star-shaped cautious net.

d.It's the Internet.

Correct answer: d