The Internet

The Internet

  • The Internet is a global network of billions of computers and other electronic devices. It facilitates data sharing and communication across vast geographical areas.

Internet Service Providers (ISPs)

  • Access to the internet is generally facilitated by Internet Service Providers (ISPs). They provide the services and infrastructure needed to connect to the internet.

Transmission Control Protocol/Internet Protocol (TCP/IP)

  • The main communication language or protocol of the internet is known as the Transmission Control Protocol/Internet Protocol (TCP/IP).
  • TCP takes messages from an application or a user and divides them into packets, which can be forwarded by the devices on the network to the router.
  • IP is responsible for the delivery of packets from the source to the destination. It adds a header to each packet with certain information, including the IP address of the sender and receiver.

Domain Name System (DNS)

  • A Domain Name System (DNS) translates domain names, which are easy for people to remember, into IP addresses, which are used by computers to identify each other.

Uniform Resource Locator (URL)

  • A Uniform Resource Locator (URL) is the address used to access web pages on the internet.

HyperText Transfer Protocol

  • The HyperText Transfer Protocol (HTTP) is the protocol used for transmitting web pages over the internet.

Secure HyperText Transfer Protocol (HTTPS)

  • Secure HyperText Transfer Protocol (HTTPS) is a secure version of HTTP that encrypts all communication between your browser and the website.

World Wide Web

  • The World Wide Web is an information system where documents and other web resources are identified by URLs. It is a key service that runs on the internet.
  • The World Wide Web was developed by British scientist Tim Berners-Lee in 1989.

Web Browsers

  • Web browsers are software applications used to locate, retrieve, and present content on the World Wide Web, including web pages, images, video, and other files.
  • Examples of popular web browsers include Google Chrome, Mozilla Firefox, and Microsoft Edge.

Internet Security

  • Internet security involves protecting information by preventing, detecting, and responding to attacks. It includes measures to safeguard against cyber threats like viruses, phishing scams, and denial-of-service attacks.
  • Secure passwords, network firewalls, anti-virus software, and caution when opening emails from unknown sources are all integral to maintaining internet security.

Cloud Computing

  • Cloud computing refers to the delivery of computing services over the internet (“the cloud”) instead of using local servers or personal devices.
  • Services provided through cloud computing include data storage, server access, software applications, and analytics.
  • Benefits of cloud computing include cost savings, increased productivity, speed and efficiency, improved accessibility, and ease of collaboration.