What is the relationship between broadband, WIFI, and routers?

The broadband, router, and wifi mentioned above are basically home users to achieve wireless Internet access.

The principle of Walkman wifi asked later is actually similar to the principle of home wireless Internet access, but in a different way and saying.

For example, your broadband is replaced with a mobile phone number, which is responsible for receiving wireless 4G or 5G signals, and then converting the received wireless 4G or 5G signals into WiFi signals, (the principle is the same as opening a hotspot on a mobile phone for others to use).

Broadband is connected to the Radio and Television Bureau, wifi is the signal sent by the router, the router is equivalent to the socket, and wifi is equivalent to the electrical appliance.

Now the network signal is divided into two kinds: wired transmission and wireless transmission, from the operator's equipment through the network cable really connected to the computer, this is called wired transmission, the router is a device that converts the wired signal into a wireless signal, wifi is a wireless signal, the operator's signal tower is similar to the principle of the router, directly send wireless signals, this is wireless transmission, mobile phones can also receive wireless signals out, this is the hot spot.

This means that now they are all optical fiber network services** will be equipped with a modem for photoelectric signal conversion, commonly known as optical modems.

Some of the current optical cats also have wifi function, if not, you can connect a router with wireless yourself, portable wifi

The principle is to convert the 4G or 5G signal provided by the mobile service operator into a WiFi signal or the signal provided by the broadband service provider into a WiFi signal.

The router is not wifi.

A router refers to a network device, while WiFi refers to a network signal. From the point of view of signal transmission, routers can be divided into wired and wireless, wired routers need to connect network cables, and wireless routers need to use antennas, wireless routers will send out wifi network signals after connecting to the network.

Router

Routers are usually located at the network layer, so routing technology is also a technology related to the network layer, and routers have many changes and differences compared to earlier bridges. Generally speaking, bridges are limited in that they can only connect to networks with the same or similar data link layers, and cannot connect to networks with large differences between data link layers.

Routers are divided into local routers and remote routers, and local routers are used to connect network transmission media, such as optical fiber, coaxial cable, and twisted pair; The remote router is used to connect the remote transmission medium, and requires the corresponding equipment, such as the ** line to be equipped with a modem, and the wireless to be through the wireless receiver and transmitter.

The above content reference:Encyclopedia – Routers

Broadband refers to the network used to access the Internet, such as China Telecom and China Unicom, which are broadband service providers. A router is a machine, which can be used by several people at the same time with one account, provided that the network service provider in the area does not block the use of the router.

1. Definition difference: broadband refers to the frequency range used to describe the signal and false number destruction or electronic line processing, while the router is also called the gateway device, which is an intelligent network hardware device and can be used to connect two or more networks.

2. Structural differences: broadband has access network, switching network and transmission network, while router has power interface, reset button and router connection port, etc.

3. Classification differences: broadband has DSL, ADSL, optical fiber access network, etc. Routers have boundary classes and intermediate node classes. Nuclear Reputation Macro.

Meaning of broadband

Either the electronic line contains or can handle a wide range of frequencies at the same time, broadband is a relative way of description, the larger the frequency range, that is, the higher the bandwidth, the data that can be sent is also relatively increased. For example, in radio communications, a signal with a narrow frequency range can only send Morse code, and a large bandwidth is required to send high-quality **.

The broadband of the TV antenna represents the ability to receive a larger number of channels, in terms of data transmission, the same is to use the ** line as the signal transmission medium, the fiber optic cable is becoming more and more popular, the modem can only send 64kbps of data per second, and the broadband ADSL and fiber optic modem can provide a higher transmission rate.

The relationship between router and broadband means that the router can only be used if it uses broadband dial-up. Broadband, on the other hand, requires a password to open the Internet in order to use it normally.

A router (also known as a pathfinder) is a computer network device that can send data to a destination by packaging a network (selecting the transmission path of data), a process called routing. A router is a device that connects two or more separate networks, and routing works at the third layer of the OSI model, that is, the network layer.

A router is a device that connects various LANs and WANs on the Internet, and it will automatically select and set routes according to the situation of the channel, and send signals in the order of the best path. The router is the hub of the Internet, the traffic police. At present, routers have been widely used in all walks of life, and all kinds of products with the same grade have become the main force to realize the internal connection of various backbone networks, the interconnection between backbone networks and the interconnection between backbone networks and the Internet.

The main difference between routing and switching is that the switch takes place at the second layer of the OSI reference model (data link layer), while the routing takes place at the third layer, which is the network layer. This difference determines that the route and the switch need to use different control information in the process of moving information, so the way they implement their respective functions is different.

The differences between routers and broadband are as follows: different functions, different connection methods, and different shapes.

1. The role is different

Fiber optic cat is a necessary equipment for computer networking, with fiber optic cat computer can dial-up Internet access, and router is a device that helps multiple computers share a network, with the help of router, several computers can access the Internet on the same network cable, however, the router is not a necessary equipment for computer Internet access, without a router, the computer can still be connected to the Internet through the fiber optic modem.

2. The connection method is different

Due to the different roles played, the connection mode of the two is also different, one end of the optical fiber cat is connected to the first line, one section is connected to the computer or router, and a section of the router is connected to the optical fiber modem, and the other end can only be connected to the computer, and the network can not be realized directly with the router connection ** line and the computer.

3. The shape is different

The shape of the fiber optic cat is relatively simple, like a flat rectangular box, very small, and the shape of the router is varied, there are cuboid shapes, there are also oval, the volume is larger than the fiber optic cat as a whole, and the wireless router also has a number of different antenna devices.

How to tell if a router is good or bad

1. Look at the performance

The main purpose of a router is to achieve smooth communication with the outside world, and there are many factors that determine performance, such as CPU frequency, memory capacity, and packet switching rate. We can make a comprehensive comparison of the data when purchasing, and then we can look at the data objectively and comprehensively.

2. Look at the quality of Hongyin

There are many router brand products on the market, and many of them are inferior products. Since the router is a high-tech product, after-sales support and service are very important, we should know whether the equipment manufacturer has obtained some necessary certification from neutral organizations, whether it has passed the test of the supervision and reform agency, etc.

3. Function

When purchasing a router, make sure that the WLAN standard supported by the product is or, because the speed of different standards has different network coverage.