Computer Networks Flashcards
PAN
Network designed for communication among divices in close proximity
Ex: Home or small office networks
LAN network
Computer network that connects devices within a relatively small geographic area, such as a home, office building, or school
Does LAN rely on external network providers?
No, but if the devices on the LAN need access to resources or services outside of the local network, such as the internet or remote servers, the LAN would need to connect to an external network. In that case, the LAN would rely on an Internet Service Provider
WAN network
Network that spans a large geographical area, often connecting multiple smaller networks such as Local Area Networks (LANs). WANs are used to connect networks that are located far apart, such as offices in different cities or countries. External infraestructure
Wired vs Wireless communications media
methods by which data is transmitted between devices in a network
Wired
Use physical cables
Examples: Twisted pair, co-axial
Wireless
Uses radio waves, microwaves, or infrared to transmit data without physical cables
Examples: Bluetooth, wifi
Network LAN Topology
Star, Bus, and Token ring
Client-server computing
Thin client
Fat client
Smart client
Thin Client
Computers only hande input and output, and leave all processing to the server. ightweight computer that relies heavily on a server for processing, storage, and application execution. Example: web browser - google docs
Fat client
Input, output, most of the processing, and only access the serve for additional processing. Example: microsoft suite
Smart client
Combines the benefits of both thin and fat clients, providing local processing power while still being able to access and use server resources when needed.
Example: google drive desktop
Peer to peer computing
Decentralized network model that allows individual computers, or “peers,” to connect and share resources directly with one another without the need for a central server
Businesses avoid costly servers and maintinaining, reduce network traffic and administrative need
Users experience increased speed and more secured data
Extended / Wireless Network
Using Radio frequency
Wifi: speed, coverage span, and number of divices
Bluetooth: security, connectivity
Mobile/celullar network: data privacy, data administration