Download presentation
Presentation is loading. Please wait.
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
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.