Lesson 1 Introduction to networking.pptx
- 2. Network concepts • Internet • intranet • extranet • client-server • peer-to-peer • transmission types o (unicast, multicast, broadcast), • network devices including IoT
- 3. Network concepts • Internet - a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
- 4. Network concepts • Intranet - An intranet is a private network that allows employees within an organization to communicate, share information, and collaborate on tasks. • Intranets are similar to the internet, but only authorized users within an organization can access them.
- 5. Network concepts • Extranet - is a secure network that allows authorized users outside an organization to access internal information. • Extranets are often used to improve communication and collaboration between an organization and its partners. How does an extranet work? 1. Extranets use firewalls and access controls to keep the network separate from the public internet. 2. Users must enter credentials like a username and password to access the network. 3. Extranets can use Virtual Private Networks (VPNs) to link external users to the organization's network.
- 6. Network concepts • Client-server - model is a computing system that allows clients to access data and services from a server. The server acts as a central hub that manages the data and provides services to the clients. How it works 1. A client, such as a web browser, sends a request to a server for data or services 2. The server responds to the request with a message, such as a file or the result of an authentication 3. The client receives the response from the server
- 8. Network concepts • peer-to-peer - is a network architecture that allows participants to share resources and services with each other without a central server. In a P2P network, each participant, or peer, acts as both a client and a server.
- 9. Network concepts • transmission types o (unicast, multicast, broadcast) • Unicast is a type of network communication that sends data from one sender to one receiver. It's similar to a one-on-one conversation.
- 10. Network concepts • transmission types o (unicast, multicast, broadcast) • Multicast is a method of sending data from one source to multiple recipients simultaneously. It's a common network protocol used to distribute data efficiently, especially for audio and video streams.
- 11. Network concepts • transmission types o (unicast, multicast, broadcast) • Broadcast transmission is a communication method that sends information packets from one node to all other nodes on a network. This allows multiple nodes to receive the information at the same time.
- 13. Network concepts • network devices including IoT - encompass a wide range of devices that connect to the internet and can collect, send, and receive data, including smart home appliances like smart thermostats, security cameras, smart lights, wearables like fitness trackers, industrial sensors, medical devices, and more, all communicating through various network protocols like Wi-Fi, Bluetooth, cellular networks, and specialized IoT protocols like LoRaWAN and Zigbee.
- 14. network devices including IoT
- 15. Questions????