the Internet has changed our lives in all aspects, from the way we communicate, to the way we consume, work and interact. So now that we know the history of the Internet, let's see how it works. According to the INE, the use of the Internet in Spanish homes has grown a lot in recent years. Specifically in 2020, 93.2% of the population between 16 and 74 years old used the Internet , a figure 2.5% higher than that of 2019. The variation is in the older users, who have caught up, especially after the pandemic. But how does the Internet work? Next, we give you the keys to understand it: Internet works through submarine cables Although there is a common belief that the Internet works by satellite, in most cases it is distributed through submarine cables that connect the Internet around the world . To reach these submarine cables, there are other external cables that cross the surface, for example, through the mountains.
All computers have to cell numbers list use the same protocol In order for them to communicate and exchange information, all computers connected to the Internet must use the same protocol. To connect we do it through an Internet access provider (ISP) , such as Telefónica, Vodafone or Movistar. That is, companies that provide us with a connection. What these companies do is assign a unique number to our computer within the network to identify it. This number is known as the “IP”. Every IP is unique IP stands for Internet Protocol and an IP address is a unique number by which a computer or device identifies itself when connected to a network if the network has the same IP protocol. IP addresses have a structure that makes them private or public and that they are also part of the network mask and the gateway. These IP addresses allow each computer to connect to the outside, that is, to the Internet. router function Every time we want to send data over the network, we must encode it in such a way that it can be transmitted over the network in an intelligible way.
This is the function of the router, since it intelligently manages the data that we send or receive . That is, the IP address identifies the computers within the network and the TCP protocols tell us how information is sent and received between the computers. Internet Protocols TCP As we have mentioned, the TCP standards or protocols indicate the way in which information is sent over the Internet . The information is sent divided into small packets. In this process, each packet is provided with a header containing various information, such as the order in which they should be joined later. This protocol places each of the packets to be sent in a kind of IP envelope, which contains data such as the address where they should be sent. With the arrival of packets at their destination, TCP checks their validity and joins them to form the initial message. The role of servers Servers are computers connected to the network at the service of users. They are usually identified with a domain name plus the generic domain name to indicate the information contained in the server or zone to which it belongs, instead of by an IP. They are always separated by a period to make them easier to reach.
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