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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IPv4 address classes tutorials

  • IP addresses are divided into 5 classes ie. A,B,C,D,E

  • Only addresses from class A,B & C are assigned to organization

  • Addresses from class D & E are reserved for special purpose.

  • Address 127.0.0.1 is reserved for loop-back address.

  • If any pc does not have network card then we can install MS LOOP BACK adaptor, and although LAN Card is not present, it act as if there is LAN card.

 

Class

Range of first byte

Number of network

Host per network

Default subnet mask

A

1 126

27 2 = 126

224 - 2 i.e. 16,777,214

255.0.0.0

B

128 - 191

214 -2 = 16,384

216 2 i.e. 65,534

255.255.0.0

C

192 223

221-2= 2,097,150

28 2 i.e. 254

255.255.255.0

D

224 - 239

TCP/IP defines Class D for Multicast address

E

240 255

Reserved for Experiment, Research and Development

 

PRIVATE IPv4 ADDRESS

  • Private addresses can be used if the network is not directly connected to internet

  • The network can connect to internet using proxy server or fire-wall

  • These addresses are used for internal networks.

 

CLASS

START ADDRESS

END ADDRESS

SUBNET MASK

A

10.0.0.0

10.255.255.255

255.0.0.0

B

172.16.0.0

172.31.255.255

255.240.0.0

C

192.168.0.0

192.255.255.

255.255.0.0

 

IPv4 Address can be assigned by following 3 types

1) Static IP Address (Assigned Manually)

2) Dynamic IP Address

3) APIPA Automatic Private IP Address

 

1) STATIC IP ADDRESS:-

  • Static IP are manually assigned to NIC card by hardware engineer. When you manually assign an IP address, you must manually assign other TCP/IP address options such as subnet mask and default gateway.

 

2) DYNAMIC IP ADDRESSES:-

  • Dynamic IP addresses are automatically assigned to computers by DHCP (Dynamic Host Configuration Protocol) server. When a DHCP dynamically assign an IP address, the server also assign subnet mask and default gateway.

 

3) APIPA Automatic Private IP Address

  • APIPA are used when a computer is configured for DHCP to assign IP Address, however DHCP server is unavailable for some reason. In this case APIPA will assign IP address in the range from 169.254.0.1 to 169.254.255.254 with the subnet mask of 255.255.0.0.


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