DAY1

Networking Foundations

-Network - a group of connected computers and devices that can communicate and share data.

Types of computer Network Architecture

1. Client-Server Architecture- nodes can be servers/clients-Server node can manage the client Node Behaviour
2. peer-to-peer-there is not any concept of a Central Server.Each device is free for working as either client or server

Network Devices

1. Router - Connects multiple networks(like computers in an office)

• Directs data packets to their correct destination

2. Switch - Connects devices within a network(like computers in an office)

• Forwards data only to the specific device it is meant for.

3. Hub

• basic device that connects multiple devices in a network.
• Sends data to all devices(less efficient than a switch)

4. Bridge

• Connects and filters traffic between two networks or segments
• Helps reduce network traffic

5. Gateway

• Connects two different types of networks
• Translates data betwwen different protocols

6. Access Point(AP)

• Provides wireless connectivity to devices
• Extends a wired network into a wifi network

7. Modem

• converts digital data from a computer into signals for phone/cable lines and viceversa.
• Provides internet access

8. Firewall

• monitors and controls incoming and outgoing network traffic
• Provides security by blocking unauthorized access