Computer networking (an overview of given lectures).pptx
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This document provides an overview of computer networking concepts. It includes sections on general terms, data communication, computer networking, and addressing. Figures and diagrams are included to illustrate key topics such as the internet, network topologies, connectivity devices, protocols, and addressing types. The document was prepared by Mehrin Farzana for a course on computer networking and data communication supervised by Md. Toukir Ahmed at BDU.
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Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
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Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Computer networking (an overview of given lectures).pptx
- 1. 1 PREPARED BY Mehrin Farzana ID:2101013 Session: 2021-2022 SUPERVISED BY Md. Toukir Ahmed Lecturer Department of ICT, BDU DATE OF SUBMISSION: 1 MARCH, 2023 Course Code: Course Title:
- 2. 2
- 3. • General terms • Data communication • Computer networking • Addressing 3 Fig 0.3: Computer networking source: https://blog.kara.com.ng Fig 0.2: Data communication source: https://www.techerati.com/ Fig 0.1: General terms Source: https://www.bing.com/ Fig 0.4: Addressing Source: https://cybersecurityglossary.com/
- 4. 4 Educ ation Scien ce Rese arch Proje ct Engine ering Techn ology COMPUTER Digital Smart NLP Machine Fig 1.1: Flowchart of education to some technologies Fig 1.3: Digital world is subset of smart world Data Data Data Fig 1.2: Information
- 5. 5 General terms Fig 1.4: Computers connected to the Internet source: etsy.com, educba.com Satellite • ISP = Internet Service Provider • NAP = Network Access Point
- 6. 6 Fig 1.5: The internet source: dreamstime.com, clipartspub.com/ Webpage Webpage Webpage ... Website URL/Web address Protocol :// Subdomain . Domain . Top level domain HTTP, Telnet, ... WWW ... Ciber crime<---->Cyber criminal DNS Search engine General terms
- 7. 7 Fig 2.1: Data communication components Wireless Wire/Cable Reciever Sender Reciever Sender Reciever Fig 2.2: Data flow Sender Simplex Half-duplex Full-duplex Wi-Fi, WiMAX, ...
- 8. 8 Fig 2.3: Data communication model Link Node Network Wireless data communication Mobile communication Fig 2.4: Wireless to mobile communication Data communication
- 9. 9 Fig 2.5: Mobile phone generations source: https://www.pinterest.com Data communication
- 10. Data communication tasks: • Transmission system • Interfacing • Signal generation • Synchronization • Exchange management • Error detection • Routing • Recovery • Security • Network management • Addressing • ... ... ... 10 Fig 2.6: Effectiveness of data communication Data communication
- 11. * Fig 2.7: Signal modulation Source: myreadingroom.co.in/ Data communication
- 12. 12 Data communication Fig 2.8: OSI and TCP models Source: blogspot.com Each layer in a model is connecte d to layers before and after it with an inteface.
- 13. 13 Fig 2.9: Hop-to-hop and source-to-destination delivery in data communication model Source: The McGraw-Hill Companies Data communication
- 14. 14 Data communication Fig 2.10: Segment, packet, and frame Source: qastack.it
- 15. 15 Fig 2.11: Data transmission as bits having a parity bit Source: medium.com Data communication
- 16. 16 Data communication devices Fig 2.12: Data transmission method Source: theedublogger.com
- 17. • Network criteria 17 Performance Reliability Security • Physical structure Type of connection Physical topology Network topology Logical topology Point-to-point Point-to-multipoint Bus Star Ring Tree Mesh Hybrid Fig 3.1: Computer networking • Categories LAN MAN WAN PAN
- 18. 18 Computer Networking Fig 3.2: Network topology source: technicalcaps.com Bus Ring Mesh Star Tree Hybrid + 1 special Node Token Direction of token movement Token ring
- 19. 19 Modem Fig 3.3: Network connectivity devices Source: eu.dlink.com, slideshare.net Computer Networking Actuve hub Passive hub Intelligent hub
- 20. 20 Computer Networking Fig 3.4: Switch sending packet to only the destination computer whilst hub sending packet to all the connected computers except the host.
- 21. 21 Computer Networking • FDDI components 2 token rings Primary Secondary Fiber optic cable Concentrator Adapter Fig 3.5: FDDI Source: geksforgeeks.org
- 22. PON Computer Networking EPON GPON More efficient & secure & economical More efficient & economical
- 23. 23 Fig 3.6: Circuit switching vs Packet switching Source: rigor.com Computer Networking
- 24. 24 Key elements of a protocol: Tasks: Encapsulation & Decapsulation Fragmentation & reassembly Transmissin security and rerliability Conection establishment, synchronization & addressing . . . • Syntax • Semantic • Timing Some protocols: IP DNS HTTP . . .
- 25. 25 Fig 4.1: Addressing types Source: blogspot.com aka MAC address aka IP address
- 26. 26 Source Port Destination Port . . . Data Destination MAC Source MAC Packet Trailer Source IP Destination IP Protocol . . . Segment Frame Packet Segment Fig 4.2: PDU and layer addressing Addressing
- 27. 27