Networking
What is a network?
Networking
Definition of networking
1 : the exchange of information or services among individuals, groups, or institutions;
specifically : the cultivation of productive relationships for employment or business, or social
2 : the establishment or use of a computer network
Networking
What is a computer network?
A group of two or more computer systems linked together.
Types of computer networks?
- local-area networks (LANs):
The computers are geographically close together (in the same building).
- wide-area networks (WANs):
The computers are farther apart and are connected by telephone lines or radio waves.
- campus-area networks (CANs):
The computers are within a limited geographic area (a campus or military base).
- metropolitan-area networks (MANs):
A data network designed for a town or city.
- home-area networks (HANs):
A network contained within a user's home that connects a person's digital devices.
Network Characteristics
A group of two or more computer systems linked together.
- protocol
The protocol defines a common set of rules and signals that computers on the network use to communicate.
One of the most popular protocols for LANs is called Ethernet.
Networks can be broadly classified as using either
a peer-to-peer or client/server architecture.
The layout of a computer system, and how the different nodes are connected to each other.
Common topologies include a bus, star, ring, mesh.
Networking
The difference between the Internet and the World Wide Web
- Computer network
- Internet
- World Wide Web
- IP address
- Static IP address
- Server
- Client
- LAN
Network Terms
- Computer Network
Network Terms
- Internet
Network Terms
- World Wide Web (WWW)
Network Terms
- World Wide Web ( WWW )
Network Terms
- IP Address
Network Terms
- Static IP Address
Network Terms
- Server
Network Terms
- Client
Network Terms
- LAN
Network Terms
Remote Access:
To access the Raspberry Pi without a monitor:
It is illegal to access another computer without permission.
* Always get permission first *
* Be respectful of everyone's wishes *
* Do not change settings, edit, or delete anything from other computers without permission *
Rules:
Remote Access
To access the Raspberry Pi without a monitor:
-
SSH (Secure Shell)
Access the Command Line of the Pi from another computer.
- Terminal (Linux, Mac OS)
- SSH Client like PuTTY (Windows)
-
VNC (Virtual Network Computing)
Remote access to the Pi's graphical interface, viewed in a
window on another computer.
- Remote Access Software
- RealVNC
- NoMachine
- Cross-over Cable, using VNC
Networking
SenseHAT - First Program
- Remotely access SenseHAT Raspberry Pi with SSH
- Make sure you are in home/pi directory.
- Change directories to get to the desktop.
- Using nano, create file called myname.py
Type in the following code:
from sense_hat import SenseHat sense = SenseHat() sense.show_message("Hello my name is Bob")
- Save and exit nano
- Type command: python myname.py