Learn to code - Internet

Internet is a vast network that connects computers all over the world. Through the Internet, people can share information and communicate from anywhere with an Internet connection.

HTTP is a protocol for fetching resources such as HTML documents. It is the foundation of any data exchange on the Web and it is a client-server protocol, which means requests are initiated by the recipient, usually the Web browser. A complete document is reconstructed from the different sub-documents fetched, for instance, text, layout description, images, videos, scripts, and more.

Hypertext transfer protocol secure (HTTPS) is the secure version of HTTP, which is the primary protocol used to send data between a web browser and a website. HTTPS is encrypted in order to increase security of data transfer. This is particularly important when users transmit sensitive data, such as by logging into a bank account, email service, or health insurance provider.

SSL stands for Secure Sockets Layer and, in short, it's the standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details. The two systems can be a server and a client (for example, a shopping website and browser) or server to server (for example, an application with personal identifiable information or with payroll information).

A browser is an application program that provides a way to look at and interact with all the information on the World Wide Web. This includes Web pages, videos and images. Popular browsers:

• Google Chrome
• Firefox
• Brave
• Tor Browser

A domain name is a unique, easy-to-remember address used to access websites, such as ‘google.com’, and ‘facebook.com’. Users can connect to websites using domain names thanks to the DNS system.

• Namecheap
• Cloudflare
• Unstoppable Domains
• P.A Vietnam

The Domain Name System (DNS) is the phonebook of the Internet. Humans access information online through domain names, like nytimes.com or espn.com. Web browsers interact through Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so browsers can load Internet resources.

A server is a computer or system that provides resources, data, services, or programs to other computers, known as clients, over a network. In theory, whenever computers share resources with client machines they are considered servers. There are many types of servers, including web servers, mail servers, and virtual servers.

The cloud is made up of servers in data centers all over the world. Moving to the cloud can save companies money and add convenience for users.

SaaS is a way of delivering applications over the Internet - as a service. Instead of installing and maintaining software, you simply access it via the Internet, freeing yourself from complex software and hardware management.

A client is a piece of computer hardware or software that accesses a service made available by a server as part of the client–server model of computer networks. The server is often (but not always) on another computer system, in which case the client accesses the service by way of a network.

An intranet can be defined as a private network used by an organization. Its primary purpose is to help employees securely communicate with each other, to store information, and to help collaborate.

Website is a collection of information pages containing content in the form of text, numbers, sounds, images, videos, etc., which are stored on a server (webserver), for example, websites wikipedia.org, google.com, amazon.com, etc.

Hosting, in its most generic sense, is a service through which storage and computing resources are providing to an individual or organization for the accommodation and maintenance of one or more websites and related services.

Short for electronic mail, e-mail or email is information stored on a computer that is exchanged between two users over telecommunications. More plainly, e-mail is a message that may contain text, files, images, or other attachments sent through a network to a specified individual or group of individuals.

VPN stands for "Virtual Private Network" and describes the opportunity to establish a protected network connection when using public networks. VPNs encrypt your internet traffic and disguise your online identity. This makes it more difficult for third parties to track your activities online and steal data. The encryption takes place in real time.

The term Internet Service Provider (ISP) refers to a company that provides access to the Internet to both personal and business customers. ISPs make it possible for their customers to surf the web, shop online, conduct business, and connect with family and friends—all for a fee. ISPs may also provide other services including email services, domain registration, web hosting, and browser packages. An ISP may also be referred to as an information service provider, a storage service provider, an Internet service provider (INSP), or any combination of these three based on the services the company offers.

CDN refers to a geographically distributed group of servers which work together to provide fast delivery of Internet content.