internet and networks
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Internet and Networks
The Internet is a worldwide network of interconnected computers that allows people and businesses to communicate and share information around the world. The network is made up of millions of devices, from personal computers to servers, routers and mobile devices.
Computer networks are a fundamental part of the Internet. They are made up of various interconnected devices such as computers, routers, switches, and hubs. These devices allow data to be transmitted from one device to another, allowing computers and devices to communicate and share resources.
Types of Networks
There are several types of computer networks, each with its own characteristics and purposes. Local area networks (LAN) are used in businesses and homes to share resources such as printers and files. Wide Area Networks (WAN) are used to connect geographically separated networks, allowing communication between distant locations.
The internet is a wide area network that connects networks all over the world. It is made up of multiple network backbones, which are high-speed networks that connect different parts of the internet. Businesses and Internet Service Providers (ISPs) use these backbones to provide Internet access to users.
Network Protocols
Network protocols are sets of rules that govern communication between devices on a network. They allow devices to communicate and share resources efficiently and securely. The most common protocols include TCP/IP, which is used on the Internet and on local area networks, and DNS, which is used to translate domain names into IP addresses.
Network Security
Network security is an important concern for businesses and individual users. Networks can be vulnerable to hacker and malware attacks, which can result in data theft and damage to systems. To protect networks, companies use firewalls, antivirus and other security tools to protect their systems and data.
In summary, the Internet and computer networks are fundamental to communication and information sharing around the world. As technology evolves, it is important for businesses and individual users to understand the basics of networking and security to protect their systems and data.
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