Basic Computer Network Concepts - In-Person (copy)

LAN (Local Area Network)

A network confined to a small area such as a building or groups of buildings.

WAN (Wide Area Network)

A network that encompasses a large geographical area, potentially connecting multiple LANs.

CAN (Campus Area Network)

A network that covers a defined geographic area, such as a college campus.

MAN (Metropolitan Area Network)

A network that encompasses a city or town.

Intranet

A private network within an organization for sharing information, accessible to specific outsiders with valid credentials.

Extranet

An extension of an intranet that provides access to authorized users not physically present, often with added security features.

VPN (Virtual Private Network)

A secure network that allows confidential communication within an organization, often using encrypted tunnels.

Twisted-wire cables

A type of physical connectivity material used in networks.

Fiber-optic lines

A connectivity material that supports high-speed data transfer and offers excellent signal reliability.

Wireless (Wi-Fi) Transmission

A method of connecting devices without physical cables, using radio waves for communication.

IP Address

A unique identifier for each computer on the Internet, consisting of four sets of numbers separated by periods.

Static IP Address

An IP address that remains the same each time a computer connects to the Internet.

Dynamic IP Address

An IP address that changes each time a user connects to the Internet.

World Wide Web (WWW)

A network within the Internet that allows access to hypertext documents via web browsers.

W3C (World Wide Web Consortium)

An organization that governs and maintains the standards for the World Wide Web.

URL (Universal Resource Locator)

The address used to access web documents, typically beginning with "http" or "https."

HTTP (Hypertext Transfer Protocol)

The protocol used by web browsers to retrieve web documents.

Web Browser

A tool that enables users to retrieve and display files from the Internet.

Malware

Software designed to damage or disrupt computer systems, often for profit.

Ransomware

A type of malware that locks or encrypts files, demanding payment for access.

Phishing

A deceptive practice aimed at obtaining personal information through fraudulent emails or websites.

Pharming

A technique that redirects users to fake websites to extract personal information.

Botnet

A network of computers connected to the Internet without their owners' knowledge, often used for malicious activities.