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Mr. Kunjan D Shinde
Assistant Professor
Department of Electronics and Communication Engineering
PESITM Shivamogga.
13/08/2015 2
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
UNIT 1
Network Models
Layered Task
O...
13/08/2015 3
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Layered Task
13/08/2015 4
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Seven Layers of OSI model
ISO- Inter...
13/08/2015 5
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
The Interaction Between layers in th...
13/08/2015 6
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
An exchange of data using the OSI mo...
13/08/2015 7
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Physical Layer
Functions of Physical...
13/08/2015 8
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Data Link Layer
Functions of Data Li...
13/08/2015 9
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Hop to Hop Delivery
13/08/2015 10
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Network Layer
Functions of Network ...
13/08/2015 11
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Source to destination Delivery
13/08/2015 12
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Transport Layer
Functions of Transp...
13/08/2015 13
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Reliable Process to process delivery
13/08/2015 14
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Session Layer
Functions of Session ...
13/08/2015 15
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Presentation Layer
Functions of Pre...
13/08/2015 16
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Application Layer
Functions of Appl...
13/08/2015 17
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Summary of Layers in OSI model
13/08/2015 18
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
TCP/IP Protocol Suite
13/08/2015 19
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Addressing
13/08/2015 20
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Physical Addressing
07:01:02:01:2C:...
13/08/2015 21
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Logical Addressing
13/08/2015 22
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Port Addressing
13/08/2015 23
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Port Addressing
753
A 16-bit port a...
13/08/2015 24
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Specific Addressing
Specific addres...
13/08/2015 25
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
The telephone network had its begin...
13/08/2015 26
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
It has 3 major components
1. Local ...
13/08/2015 27
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
13/08/2015 33
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Telephone companies developed a new...
13/08/2015 34
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Some points on ADSL
ADSL- Asymmetri...
13/08/2015 35
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Some points on ADSL Cont’d..
2. Ada...
13/08/2015 36
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Discrete Multitone technique
13/08/2015 37
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Bandwidth Division in ADSL
-Voice -...
13/08/2015 38
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
13/08/2015 39
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
High-bit-rate digital subscriber li...
13/08/2015 40
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Summary
13/08/2015 41
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
The cable TV network started as a v...
13/08/2015 42
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Communication in the traditional ca...
13/08/2015 43
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Communication in an HFC cable TV ne...
13/08/2015 44
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Cable companies are now competing w...
13/08/2015 45
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
Downstream data are modulated using...
13/08/2015 46
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
13/08/2015 47
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
13/08/2015 48
Mr. Kunjan D. Shinde, Asst. Professor, Dept. of
E&CE, PESITM Shivamogga.
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Computer communication networks chapter 1 ppt (vtu odd sem EC)

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this file consist of chapter 1 contents from EC 7th sem CCN subject. only slides r present here. voice + slides coming soon

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Computer communication networks chapter 1 ppt (vtu odd sem EC)

  1. 1. Mr. Kunjan D Shinde Assistant Professor Department of Electronics and Communication Engineering PESITM Shivamogga.
  2. 2. 13/08/2015 2 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. UNIT 1 Network Models Layered Task OSI Model Working of Physical layer, Data link layer, Network layer Transport layer, Session layer, Presentation layer Application layer TCP/IP Protocol Suite Working of each layers Addressing Physical, Logical, Port, and Specific addressing. Acall Last_Class Telephone and Cable Networks for Data Communication Telephone Networks Dial up modem DSL Cable TV for data Transmission
  3. 3. 13/08/2015 3 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Layered Task
  4. 4. 13/08/2015 4 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Seven Layers of OSI model ISO- International Standards Organization. - International Organization for Standardization. - Established in 1947 - Multifunctional body dedicated to worldwide agreement on international standards. - ISO standard that covers all aspect of Network Communication is OSI model OSI – Open System Interconnect Model - 1st introduced in late 1970’s - has 7 ordered layers - Open System is set of protocols that allows two different system to communicate regardless of their underlying hardware or software - OSI is not a protocol - purpose is to facilitate communication b/w different systems without changing its logic of underlying h/w and s/w. ISO is Organization. OSI is the Model
  5. 5. 13/08/2015 5 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. The Interaction Between layers in the OSI Model
  6. 6. 13/08/2015 6 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. An exchange of data using the OSI model
  7. 7. 13/08/2015 7 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Physical Layer Functions of Physical layer Physical Layer is responsible for movements of individual bits from one hop(node) to the next. - Physical Characteristics - Data Rate - Synchronization of Bits - Line Configuration - Physical Topology - Transmission Mode
  8. 8. 13/08/2015 8 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Data Link Layer Functions of Data Link layer Data Link Layer is responsible for moving frames from one hop(node) to the next. - Framing - Physical Addressing - Flow control - Error Control - Access Control
  9. 9. 13/08/2015 9 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Hop to Hop Delivery
  10. 10. 13/08/2015 10 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Network Layer Functions of Network layer Network Layer is responsible for the delivery of individual packets from source to destination. - Logical Addressing - Routing
  11. 11. 13/08/2015 11 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Source to destination Delivery
  12. 12. 13/08/2015 12 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Transport Layer Functions of Transport layer Transport Layer is responsible for the delivery of the message from one process to another. - Service point addressing - Segmentation and Reassembly - Connection control - Flow control - Error control
  13. 13. 13/08/2015 13 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Reliable Process to process delivery
  14. 14. 13/08/2015 14 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Session Layer Functions of Session layer Session Layer is responsible for dialog control and synchronization. - Dialog control - Synchronization
  15. 15. 13/08/2015 15 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Presentation Layer Functions of Presentation layer Presentation Layer is responsible for Translation, compression and encryption. - Translation - Encryption - Compression
  16. 16. 13/08/2015 16 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Application Layer Functions of Application layer Application Layer is responsible for providing services to the user. - Network Virtual terminal - File transfer, access, and management - Mail services - Directory Services
  17. 17. 13/08/2015 17 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Summary of Layers in OSI model
  18. 18. 13/08/2015 18 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. TCP/IP Protocol Suite
  19. 19. 13/08/2015 19 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Addressing
  20. 20. 13/08/2015 20 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Physical Addressing 07:01:02:01:2C:4B A 6-byte (12 hexadecimal digits) physical address.
  21. 21. 13/08/2015 21 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Logical Addressing
  22. 22. 13/08/2015 22 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Port Addressing
  23. 23. 13/08/2015 23 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Port Addressing 753 A 16-bit port address represented as one single number.
  24. 24. 13/08/2015 24 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Specific Addressing Specific address is used in some applications which need user friendly addresses. Example email: kunjanshinde@pestrust.edu.in - used to define the address of the receiver. URL- Universal Resource Locator URL- www.pestrust.edu.in/pesitm/ -used to find a document on World Wide Web
  25. 25. 13/08/2015 25 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. The telephone network had its beginnings in the late 1800s and was originally created to provide voice communication. Need to communicate digital data results in the invention of the dial-up modem High speed downloading – DSL- Digital Subscriber Line The entire network, which is referred to as the plain old telephone system (POTS), was originally an analog system using analog signals to transmit voice. PSTN : Public Switched Telephone Networks Telephone networks use circuit switching.
  26. 26. 13/08/2015 26 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. It has 3 major components 1. Local Loops – Twisted pair cable, END/local central office, BW- 4kHz for voice 08362222954 2. Trunks – is a transmission media handles Communication b/w offices 3. Switching Offices - to avoid physical link b/w two subscriber, Telephone company has switches. - A switch connects several local loops or trunks and allows a connection b/w different subscribers. Major Components of Telephone Networks
  27. 27. 13/08/2015 27 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga.
  28. 28. 13/08/2015 33 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Telephone companies developed a new technology when the traditional modems reached their peak data rate, this new technology was DSL- Digital Subscriber Line. DSL is used to provide higher-speed access to the Internet. Digital subscriber line (DSL) technology is one of the most promising for supporting high-speed digital communication over the existing local loops. Variants of DSL are ADSL -Asymmetric HDSL -High bit rate SDSL -Symmetric VDSL -Very high bit rate xDSL - generally referred as xDSL where x = A, H, S, or V. Digital Subscriber Line
  29. 29. 13/08/2015 34 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Some points on ADSL ADSL- Asymmetric –b’coz it uses a different speed in upstream and downstream. - downstream has higher data rate than upstream ADSL is an asymmetric communication technology designed for residential users; it is not suitable for businesses. The existing local loops can handle bandwidths up to 1.1 MHz (data and voice Communication). ADSL is an adaptive technology. The system uses a data rate based on the condition of the local loop line. 1. Using Existing Local Loops -uses a existing local loops. -new BW was achieved by ADSL, b’coz of change in the filter used by TC.
  30. 30. 13/08/2015 35 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Some points on ADSL Cont’d.. 2. Adaptive Technology -1.1 MHz is a theoretical bandwidth of Local Loops. - some factors that influence the change in BW property are Distance, Size of the cable, Signaling used and so .on.. - Hence these factors need to be taken care, so the Adaptive Technology. Adaptive technology is used to test the conditions of the channel and to find the available BW of the line - Data rate of the ADSL is not fixed, it changes based on the condition and type of local loop cable. 3. Discrete multitone Technique (DMT) -Modulation Technique used by ADSL is DMT. -No predefine way to set the BW and divide among the users (each s/m can decide on its BW division). - typical BW -1.104MHz is divided in to 256 channels. -each channel uses the BW of 4.312kHz
  31. 31. 13/08/2015 36 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Discrete Multitone technique
  32. 32. 13/08/2015 37 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Bandwidth Division in ADSL -Voice - Channel 0 - Idle - Channel 1 to 5 - Upstream data and Control -Channel 6 to 30 (24 channels), QAM modulation is used and BW is 24*4000*15=1.44Mbps {normal 500kbps b’coz of noise} - Downstream Data and Control - Channel 31 to 255 (24 channels), QAM modulation is used and BW is 224*4000*15=13.4Mbps{normal 8Mbps b’coz of noise}
  33. 33. 13/08/2015 38 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga.
  34. 34. 13/08/2015 39 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. High-bit-rate digital subscriber line (HDSL): It’s an alternative to T-1 line(1.544 Mbps) Limitation of T-1 line is it uses alternative mark inversion(AMI) encoding, which is very susceptible to attenuation at high frequencies. Thus the length of T-1 line is limited to 3200ft (1km). Thus there is need of repeater for longer distances. HDSL uses 2B1Q encoding which is less susceptible to attenuation. Up to a distance of 12000ft(3.86km) a data rate of 1.544Mbps can be achieved without repeaters. HDSL uses 2 twisted pairs (One pair for each direction) to achieve full-duplex transmission.
  35. 35. 13/08/2015 40 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Summary
  36. 36. 13/08/2015 41 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. The cable TV network started as a video service provider, but it has moved to the business of Internet access. In this section, we discuss cable TV networks per se; in Section 9.5 we discuss how this network can be used to provide high-speed access to the Internet.
  37. 37. 13/08/2015 42 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Communication in the traditional cable TV network is unidirectional.
  38. 38. 13/08/2015 43 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Communication in an HFC cable TV network can be bidirectional.
  39. 39. 13/08/2015 44 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Cable companies are now competing with telephone companies for the residential customer who wants high-speed data transfer. In this section, we briefly discuss this technology. Bandwidth Sharing CM and CMTS Data Transmission Schemes: DOCSIS
  40. 40. 13/08/2015 45 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga. Downstream data are modulated using the 64- QAM modulation technique. The theoretical downstream data rate is 30 Mbps. The theoretical upstream data rate is 12 Mbps. Upstream data are modulated using the QPSK modulation technique.
  41. 41. 13/08/2015 46 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga.
  42. 42. 13/08/2015 47 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga.
  43. 43. 13/08/2015 48 Mr. Kunjan D. Shinde, Asst. Professor, Dept. of E&CE, PESITM Shivamogga.

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