Computer Networks Overview

A collection of interconnected devices that can exchange data, resources, and information. These devices can include computers, smartphones, tablets, and other computing devices.

A device connected to a computer network. It can be a computer, smartphone, server, or any other device capable of communication over the network.

The information that is being exchanged within a computer network.

The node on the network responsible for initiating the message being sent. It's the source of the information.

The node on the network that receives the message sent from the sender.

A set of rules that govern the way information flows through a network. They ensure efficient and reliable communication between devices.

The physical medium that carries the message signals through the network. Examples include cables, radio waves, and fiber optic cables.

A unique identifier assigned to every computer device connected to a network. It's like a physical address for the device.

A networking device that connects multiple devices on a local area network (LAN). It allows devices to communicate directly with each other, improving network efficiency.

A networking device that amplifies and retransmits network signals, extending the distance over which data can be sent over the same network.

A device that connects two or more local area networks (LANs) together, creating a larger network. Bridges improve network performance and can expand the physical size of a network.

A networking device that acts as a gateway between different networks, routing data packets between them. This can be between a LAN and a WAN, or between different subnets of the same network.

A networking device that forwards data packets between different networks. Routers use routing tables to determine the best path for data to travel between networks.

Connecting multiple devices, such as computers, printers, and scanners, to share resources and enable communication.

A network allows you to share resources like printers, scanners, and storage devices, saving money and increasing efficiency.

Networking enables the sharing and access of files and data from any connected device, improving collaboration and productivity.

Networks facilitate easy communication between devices and users, including email, instant messaging, and video conferencing.

Networking allows users to access and control devices and data from remote locations, enhancing flexibility and mobility.

Networks can be easily expanded to accommodate more devices and users as needed, allowing for growth and scalability.

Networks provide protection for important data against cyber threats, preventing data loss and securing systems.

Centralized management allows for easier administration and reduced costs by managing devices and resources from a single point.

Networks are classified based on their geographical area of coverage, such as Local Area Networks (LANs), Wide Area Networks (WANs), and Metropolitan Area Networks (MANs).

A website is a collection of web pages and related content that are identified by a common domain name. They can be created and maintained by individuals, groups, businesses, or organizations for various purposes.

A search engine is a software system designed to search information on the World Wide Web. Popular examples include Google, Yahoo, and Bing.

A URL (Uniform Resource Locator) is a string of characters that identifies a specific resource on the internet. It's typically entered into a web browser's address bar to access a web page, image, or file.

An IP address (Internet Protocol address) is a unique numerical label assigned to every device connected to a network that uses the Internet Protocol for communication.

DNS (Domain Name System) is a hierarchical and distributed naming system for computers, services, or any resource connected to the Internet or a private network. It translates domain names, such as 'google.com', into IP addresses that computers use to locate and communicate with each other.

A global network connecting trillions of computer systems worldwide, allowing people and organizations to share information and resources.

A private network within an organization that uses internet protocols and technologies to share information and resources. Only authorized users within the organization can access it.

LANs, WANs, and other networks are interconnected through gateways, routers, and other networking devices to form the internet.

A device that connects a local area network (LAN) to the internet, allowing devices on the LAN to access resources and services on the internet.

A document or resource accessible on the World Wide Web through a web browser. Typically written in HTML, it provides structure and layout and can include other functionality.

It enables better communication and collaboration within an organization. Employees can easily share information and resources, and they can communicate and collaborate with other employees in real time.

Intranets improve security by providing a private, internal network that is protected from external threats such as hacking and malware.

Routers are used to connect a LAN to the internet, allowing devices on the LAN to communicate with resources and services on the internet.

A type of network that connects devices within a limited geographical area, such as a home or office building.

A type of network that connects devices over a wide geographical area, such as a city, state, or country.