This document provides an overview of computer network fundamentals including: 1. It defines a network as multiple computing devices interconnected to share resources and defines wired and wireless connection types. 2. It discusses number systems used in networking like binary, decimal, hexadecimal and place values and how to convert between them. 3. It describes common network infrastructure components like cables, NICs, LANs, WANs, and devices like hubs, switches and routers.

1. COMPUTER NETWORK
FUNDAMENTALS
E.G.S. PILLAY ENGINEERING COLLEGE
CSE Dep’t
K.VIGNESH,ME
TUTOR

2. Network, Security, Server,
Cloud

4. Network?

5. Multiple Computing Devices(Physical or Virtual)
inter-connected together to form a network

8. Wired(Guided Medium) - Cable
Wireless(Unguided Medium) - Air

9. Number System

10. Binary Number
0 or 1
1 - bit
2 - bit

11. 0000
0001
1111 ---> nibble

12. 00000000
00000001
11111111 ---> 2 nibble or 1 Octal or 1 byte

13. 1024 Byte = 1KiB
1024 KiB = 1MiB
1024 MiB = 1GiB

14. Speed - bits - Mbps
Data - Byte - MB or MiB

15. Decimal Number
0,1,2,3,....9

16. Hexadecimal Number
0,1,2,....9,A,B,..F
1 Hexadecimal = 4 bit

17. Base Value
Maximum number in a Number System
Binary - 2
Decimal - 10
Hexadecimal - 16

18. Place Value
It is the place of the number in number system

19. Converting
Binary to Decimal
Decimal to Binary
Hexadecimal to Decimal

20. Network Infrastructure

22. Cables

23. Coaxial Cable

24. Twisted Pair Cable
Two Types
1. Unshielded
2. Shielded

26. Cat3 - 10Mbps
Cat5 - 10Mbps / 100Mbps
Cat5e - 100Mbps / 1Gbps
Cat6 - 1000Mbps / 1Gbps
Cat6a - 1Gbps / 10 Gbps
Cat7 - 10 Gbps

28. Straight Cable

29. Cross Cable

30. Fibre Optical Cable

31. NIC - Network Interface Card

34. LAN

35. WAN

36. Cable, Hub, Switch, Router

37. EMAIL ID vignesh301992@gmail.com
CONTACT 9003325678
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