Unit 3 Network

WiFi

Wireless fidelity. A technology that allows electronic devices to connect to a wireless LAN.

WiMAX

A broadband wireless technology designed for long-range wireless communication.

3G/4G/5G Mobile

Generations of mobile networks providing various data transfer speeds and capabilities.

Bluetooth

A short-range wireless technology for exchanging data between devices.

Infrared

A technology that uses light waves to transfer data between devices in close proximity.

Advantages of Wireless Networks

Includes low setup cost, scalability, and convenience.

Disadvantages of Wireless Networks

Includes low security, interference susceptibility, limited range, and health concerns.

Standards

Set guidelines for compatibility and communication in network construction.

Guideline

Recommended advice for networking situations, not mandatory.

Protocol

A set of rules governing communication between network devices.

Policy

Internal decisions on how to implement standards and protocols.

LAN (Local Area Network)

A network connecting devices in a small geographical area.

VLAN (Virtual Local Area Network)

A logical grouping of devices within the same network infrastructure.

WLAN (Wireless Local Area Network)

A LAN that connects devices wirelessly.

PAN (Personal Area Network)

A network for personal devices in close proximity, often using Bluetooth.

SAN (Storage Area Network)

A dedicated network that provides access to consolidated storage.

WAN (Wide Area Network)

A network that covers a broad area, such as a city or the entire world.

Internet

A global WAN connecting millions of private, public, academic, business, and government networks.

Extranet

A private network that extends beyond the organization to share information with external partners.

Intranet

A restricted network accessible only to an organization's members.

P2P (Peer-to-Peer)

A decentralized network where each participant can communicate directly with others.

VPN (Virtual Private Network)

A secure connection created over a public network to connect remote users to a private network.