1. Introduction to Computer Network and Data Communication Widyawan

2. Learning agenda 1. Introduction to Computer Networks 2. OSI 3. Application Layer 4. Transport Layer (TCP/UDP) 5. IP Address 6. IP Address, Sub-netting, NAT 7. Data Link Layer 8. Mid Semester 9. Physical Layer 10. Ethernet 11. Routing Protocol: static and dynamic 12. Planning and Cabling Network 13. Wireless 14. Management, monitoring and optimizations 15. Presentation 16. Final Exam

3. Assessment  40 % tasks  60 % exam (mid and final) Books  CCNAB, Cisco Press  Network+, Sybex

4. Requirements Active Learn English 75 % of attendance Team work

5. In this session Describe how networks impact our daily lives. Describe the role of data networking in the human network. Describe the characteristics of network architectures: fault tolerance, scalability, quality of service and security.

6. A Little Bit of History  In the mid 1960s, mainframe computers were stand alone devices. Computers from different manufactures were unable to communicate each other.  1969 – ARPANET, first packet switched network consist of UCLA, Stanford, UC Santa Barbara and Utah University  1971 – first email program  1980’s – Local Area Networks (LANs)  1990’s – WWW / Internetworking

8. Network Now Communication is almost as important to us as our reliance on air, water, food, and shelter.

9. Early data networks: character-based information between connected computer systems. Current networks have evolved to carry voice, video streams, text, and graphics Converged onto a common platform. Enable communication instantaneously. Global communities.

10. Communication in a Network Centric World

11. Forecast Route and Map Online Banking World News Social Network

12. Instant messaging  Real time communication  between 2 or more people  based on typed text

13.  Weblogs (Blogs)  Email  Leisure

14. Change the way we learn

15. Change the way we work

16. What is Communication Agree on the method used May have to agree on the language used Communication is successful when the message already received and confirmed

17. Before beginning to communicate with each other, we establish rules or agreements to govern the conversation. These rules, or protocols, must be followed in order for the message to be successfully delivered and understood. The techniques that are used in network communications share these fundamentals with human conversations

19. The Internet Architecture Fault Tolerance Scalability QOS Security

20. Fault Tolerance Limits the impact of a hardware or software failure and can recover quickly when such a failure occurs Depend on redundant links, or paths, between the source and destination of a message

21. Fault Tolerance

22. Circuit Switching

23. Packet Switching

24. Scalability

25. Scalability in Internet Architecture

26. Hierarchical Distributed Peers

27. QoS Mekanisme kontrol yang mampu memberikan prioritas yang berbeda pada aliran data/user yang berbeda, atau menjamin kualitas aliran data sesuai permintaan dari program aplikasi

28. QoS Example

29. Priority in QoS

30. Security

31.  Ensure confidentiality through use of User authentication Data encryption  Maintain communication integrity through use of Digital signatures  Ensure availability through use of Firewalls Redundant network architecture Hardware without a single point of failure Network Security

33. Devices  These are used to communicate with one another Medium  This is how the devices are connected together Messages  Information that travels over the medium Rules  Governs how messages flow across network Element in Network

34. Network Devices

35. Devices in Network

36. Review Papers  Network-based application (example :e-learning) ore-learning  Internet 2 Internet 2  You can find your own source of papers  Put reference where appropriate  Use proper references Primary Source Secondary source: PhD thesis, journal paper, monograph, book You should not use Wikipedia