Key Computing Terms and Concepts

Bandwidth

  • Definition: The amount of data that can be transmitted in a fixed time, measured in bps (bits per second).
  • Importance: Higher bandwidth allows for faster data transmission, crucial for efficient network performance.

Computing Device

  • Definition: A machine capable of running programs, such as phones, tablets, and computers.
  • Examples: Smartphones, laptops, desktops, and tablets.
  • Role: Devices serve as endpoints for users to access information and utilize applications.

Computing Network

  • Definition: A group of computing devices (computers or phones) connected to each other for data sharing.
  • Types: Local Area Network (LAN), Wide Area Network (WAN), etc.
  • Function: Facilitates communication and resource sharing among connected devices.

Computing System

  • Definition: A collection of computers and machines working together towards a common goal.
  • Configuration: Can include hardware and software components operating cohesively to perform tasks.

Path

  • Definition: A series of computers that starts with a sender and ends with a receiver.
  • Example: The route that data takes from one device to another across a network.

IP Address

  • Definition: A unique numerical label assigned to each device connected to a network.
  • Purpose: Allows devices to identify and communicate with each other on the Internet.

Fault Tolerant

  • Definition: A system's ability to continue functioning when there is a hardware or software failure.
  • Significance: Ensures reliability and availability of services.

Redundancy

  • Definition: The deliberate duplication of critical components of a system to improve reliability.
  • Application: Used in systems where uninterrupted service is essential.

Router

  • Definition: A device that connects multiple networks and directs data packets between them.
  • Function: Routes data packets to intended IP addresses through the most efficient paths.

Packet

  • Definition: A segment of data transmitted across a network.
  • Composition: Typically includes header information (addressing) and data payload (the actual data).

Domain Name System (DNS)

  • Definition: The system that translates domain names into their corresponding IP addresses.
  • Impact: Allows users to access internet resources using easily memorable names instead of numeric addresses.

HyperText Transfer Protocol (HTTP)

  • Definition: A protocol for transmitting hypertext via the web, allowing browsers to communicate with web servers.
  • Function: Forms the foundation of data communication for the World Wide Web.

Internet Protocol (IP)

  • Definition: A protocol used for routing data between devices on the internet using unique IP addresses.
  • Types: IPv4 (earlier version) and IPv6 (more secure and expansive).

Protocol

  • Definition: A set of rules for data communication that each device on the internet follows.
  • Importance: Ensures a standardized method for devices to communicate over a network.

World Wide Web

  • Definition: A system of interconnected websites that allows access to information over the internet.
  • Components: Comprises web pages, links, and tools for navigation and access to content.

Digital Divide

  • Definition: The gap between individuals who have access to the internet and those who do not.
  • Implications: Affects educational and economic opportunities, influencing social equity.

IPv4

  • Definition: The first version of the Internet Protocol, which uses a 32-bit address scheme.
  • Limitations: Limited number of addresses due to its size.

IPv6

  • Definition: The successor to IPv4 with a 128-bit address scheme, allowing for a vastly larger number of IP addresses.
  • Advantages: Enhanced security features compared to IPv4.

ISP (Internet Service Provider)

  • Definition: A company that provides individuals and businesses access to the internet.
  • Services: May include broadband, dial-up, and fiber optic internet services.

UDP (User Datagram Protocol)

  • Definition: A communication protocol used across the internet, prioritized for speed and reliability.
  • Use Cases: Suitable for applications where speed is more critical than reliability, such as gaming.

URL (Uniform Resource Locator)

  • Definition: A specific address used to identify a resource on the web, such as a webpage or an image.
  • Structure: Consists of the protocol (http, https), domain name, and path to the resource.