CCNA

1. Cisco Network Support Certifications 2. Networking Terms 3. INTRODUCTION TO NETWORKING 4. TYPES OF NETWORK 5. The Development of the Internet 6. NETWORK ARCHITECTURE 7. TOPOLOGY 8. BUS TOPOLOGY 9. RING TOPOLOGY 10. STAR TOPOLOGY 11. MESH TOPOLOGY 12. HYBRID TOPOLOGY 13. Speed of Networking device 14. NETWORK DEVICES 15. Exploring Wireless Network 16. REPEATERS 17. HUB 18. SWITCH 19. BRIDGE 20. ROUTERS 21. TRANSMISSION Telecommunication 22. Difference between Full Duplex, Half Duplex and Simplex 23. IP-ADDRESSING and IPV4 24. IPv4 address classes 25. IPV6 [ Internet Protocol Version 6 ] 26. SPEED OF VARIOUS DEVICES 27. Network Security 28. Some basic suggestion and steps to prevent Attacks and Network security 29. OSI model 30. UPPER and LOWER Layer 31. Application Layer (Layer 7) 32. Presentation Layer (Layer 6) 33. Session Layer (Layer 5) 34. Transport Layer (Layer 4) 35. Network Layer (Layer 3) 36. Data Link Layer 2 37. Physical Layer 1 38. TCP/IP The DoD Model 39. ROUTED PROTOCOL 40. Ports and Application 41. Important Application, Protocol and Port Number 42. Router Function 43. Types of Routing Protocols 44. STARTING ROUTER 45. CISCO IOS 46. Logging in to the Router 47. CISCO Router IOS commands List 48. Setting time and date of router 49. Router configuration commands 50. Optimizing Switch and Router 51. Understanding Router Terms 52. ROUTER SECURITY 53. Configuring CISCO SWITCH Security Policy 54. IMPLEMENTING STATIC ROUTING 55. UNDERSTANDING THE NEED FOR NAT 56. WAN Connections 57. Access List [ACL] 58. VLAN [Virtual Local Area Network] 59. SPANNING TREE :- BROADCAST STORM 60. Lab 1 Setting up a Serial Interface 61. Lab 2 : IP Addressing 62. Lab 3 Static Routes 63. Lab 4 Default Routes 64. Lab 5 RIP Routes 65. Lab 6 IGRP Routes 66. Lab 7 EIGRP Routes 67. Lab 8 OSPF Routes 68. Lab 9 CHAP and RIP 69. Lab 10 Standard Access-Lists with RIP 70. Lab 11 Extended Access-Lists with RIP 71. Lab 12 Static NAT 72. Lab 13 Many to One NAT 73. Lab 14 NAT Pool 74. Lab 15 ( 2950 Trunk ) 75. Lab 16 ( 2950 Trunk Dynamic ) 76. Lab 17 (2950 VLANs) 77. Lab 18 ( 2950 Deleting VLANs ) 78. Lab 19 ( 2950 VTP ) 79. Lab 20 ( 2950 VTP w/ client ) 80. Lab 21 ( 2950 Telnet )
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TCP/IP The DoD Model tutorials

 

  • TCP/IP protocol suite represent many protocols that run independently or with TCP (Transmission Control Protocol) and IP (Internet Protocol). The DoD model is basically a conceptual model for TCP/IP. It is condensed version of OSI model. It composed of Four instead of Seven layers of OSI model. Both the layers are similar in concept but each has a different number of layers.

 

TCP/IP Model or

DoD Model

 

OSI Model

 

 

 

Process /

Application

 

Application

 

Presentation

 

Session

 

 

 

Host-to-Host

 

Transport

 

 

 

Internet

 

Network

 

 

 

Network

Access

 

Data Link

 

Physical

 

  • Here vast array of protocols combine at the DoD Modelís Process/Application layer to integrate various activities and duties that were focus at OSI top 3 layers (i.e. Application, Presentation and Session). It defines protocols for node-to-node application communication and also controls user interface specification.

  • The Host to Host layer parallels the function of OSIís Transport Layer. It tackles issues such as creating reliable end-to-end communication and ensuring the error free delivery of data. It handles packet sequencing and maintains data integrity.

  • The Internet layer corresponds to the OSIís Network layer. It designates the protocols relating to the logical transmission of packets over the entire network. It takes care of the addressing of host by giving them an IP (Internet Protocol) address, and it handles the routing of packets among multiple networks.

  • At the bottom of the DoD model, the Network Access Layer is equivalent to Data Link and Physical Layer of ODI. It monitors the data exchange between the host and network. It oversees the hardware addressing and defines protocols for physical transmission of data.

 

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