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Computer Networks

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Published in: Networking
8,661 Views

This presentation includes basics concepts of Computer Networks.

Anuja S / Chandigarh

5 years of teaching experience

Qualification: M.Tech (Banasthali Vidyapeeth University - 2012), B.Tech/B.E. (Maharishi Dayanand University - 2010), 12th (HAL School korwa - 2006)

Teaches: Basic Computer, Computer for official job, MS Office, School Level Computer, Computer Science, Mathematics, Physics, PSU Exam, GATE Exam, Computer, IT, Java Script, Web CMS

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  1. COMPUTER NETWORKS
  2. Computer Networks This course is to provide students with an overview of the concepts and fundamentals of data communication and computer networks.
  3. Computer Networks ' Computer network connects two or more computers. The computers can be geographically located any where
  4. Network Protocol Network protocols are formal standards and policies comprised of rules, procedures and formats that define communication between two or more devices over a network.
  5. LAN, MAN & WAN Network in small geographical Area (Room, Building or a Campus) is called LAN (Local Area Network) Network in a City is call MAN (Metropolitan Area Network) Network spread geographically (Country or across Globe) is called WAN(Wide Area Network) LAN LAN Metropolitan-area" Network Network MAN WAN LAN
  6. The distance between computers 100 km-10km-= 10.000 km Areas Room Office Building Cit Province State Continent Inter-Continental (Planet) Netwolk TYI)e LAN WAN Intemet
  7. Historic Background of Computer Networks ' ARPANET was the world's first operational network, and the predecessor of the global Internet. It was developed by the U.S. Department of Defense. One theory was that it was developed to survive a nuclear attack. ' The Internet was an Accident! The Internet was a result of an unsuccessful military and academic research program! Short for "internetworking. ' The original Internet provided screens full of text . GUIs added some color and layout, but still were not very interesting.
  8. Historic Background of Computer Networks ' The World Wide Web Saved the Internet. Hyperlinks were invented . ' Mosaic: The First Web Browser. Did not handle loading pictures very well. ' 1994 — A Big Year for the WWW. Tim Berners Lee in develops the World Wide Web Consortium to develop standards for the Web. Netscape is founded 2000-The Internet exploded during this period. The first 1994 - commercial site was Amazon.com
  9. Course Objectives: At the end of the course, the students will be able to: ' Build an understanding of the fundamental concepts of computer networking. ' Familiarize the student with the basic taxonomy and terminology of the computer networking area. ' Introduce the student to advanced networking concepts, preparing the student for entry Advanced courses in computer networking.
  10. Course Contents of Subject ' Introduction to Computer Networks ' Physical Layer ' Data Link Layer ' Network Layer ' Transport Layer ' Application Layer
  11. ' Physical (hardware)— Pen ,Pencil: this is how the letters actually get from point A to point B. ' Data-link(data transfer between machines) -- The envelope: you can't just put a handwritten letter in a mailbox and expect it to be sent somewhere. ' Network(data transfer between networks) -- The address: where to deliver the letter. This establishes a connection between two residences. ' Transport (data transfer between applications)-- Your name on the envelope: once it gets inside your house, it needs to be given to the correct person. ' Session(authentication between applications) -- The standard letter format: this includes dating the letters, saying "dear so-and-so" and "yours truly." ' Presentation(syntax/format of the data being sent) -- The body of the letter itself: let's make sure both parties are writing in English. ' Application (where interception and handling of data takes place)-- The collection of letters exchanged: the point of the previous six layers was to enable the pen pal relationship between two people.
  12. Essentials of the subject from engineering point of view This subject is important for learning the basic concepts of IP addresses and connection between two systems.
  13. Industrial Applications of Networks Resource Sharing Hardware (computing resources, disks, printers) Software (application software) ' Information Sharing Easy accessibility from anywhere (files, databases) ' Search Capability (WWW) Communication Email Message broadcast
  14. Usefulness of the subject with respect to job opportunities ' This subject opens up the scope for Computer Network Engineers or Network Administrators. ' Network engineers design and maintain the systems that connect computers and electronic devices.
  15. THANK YOU!

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