2. Presented by K. M. Faruk Lecturer ICT Bhatpur Alim Madrasha Sreebardi, Sherpur

5. Today’s Presentation Net work communications

6. Learning Outcome The end of the lesson student- 1. see the network communications instruments. 2. Utilize different network communications tools. 3. Explained network communication system.

7. Wire Comm. tool: telephone Wireless Comm. tool mobile

8. Wire Communication See below videos Wireless Communication

9. Network Communication Wire Communication Wireless Communication Two Data Communications

10. Wire/ Cable Co-axial cable Twisted pair cable Optical fiber cable

11. Co-axial cable

12. Twisted pair cable

13. Optical fiber cable

14. Wireless Cummunication Infrared Microwave Radiowave

15. Infrared

16. Microwave

17. Radiowave

18. Evaluation 1.How many kinds of network communications? 2. What do work the optical fiber? 3. What do you understand by radio wave?

19. Home work How can we hear radio? Draw diagram.

20. Thank You to All