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CCNA 1 v3.0 Module 1 Introduction to Networking

CCNA 1 v3.0 Module 1 Introduction to Networking. Objectives. Requirements for Internet Connection. PC Basics. PC Basics. PC Basics. PCI Expansion Slots. AGP Expansion Slot. PC Basics. Network Interface Cards. NIC and Modem Installation. High-Speed and Dialup Connectivity.

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CCNA 1 v3.0 Module 1 Introduction to Networking

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  1. CCNA 1 v3.0 Module 1 Introduction to Networking

  2. Objectives

  3. Requirements for Internet Connection

  4. PC Basics

  5. PC Basics

  6. PC Basics

  7. PCI Expansion Slots AGP Expansion Slot PC Basics

  8. Network Interface Cards

  9. NIC and Modem Installation

  10. High-Speed and Dialup Connectivity

  11. IRQ, I/O port channels and Base Memory Addresses. • IRQ is an acronym for Interrupt ReQuest. An IRQ is a piece of circuitry built into the motherboard that connects one device/part to the CPU (Central Processing Unit). It lets the device interrupt the CPU so that jobs can be allocated and problems dealt with. • Devices connect to CPU when: • A task is finished • The device needs more instructions • Faults are developed

  12. IRQs

  13. IRQs

  14. TCP/IP Description and Configuration

  15. Testing Connectivity with Ping

  16. Web Browser and Plug-Ins

  17. Troubleshooting Internet Connections

  18. Data Representation • Character coding schemesASCII, Unicode • Unicode – International 16-bit coding system which can represent 65536 different characters • Binary number system • Binary Coded Decimal (BCD)each decimal digit has its own 4-bit binary code • Boolean valuesonly True or False • Digitised soundMIDI • Bit-mapped graphics

  19. Binary number system • Numbers can be represented in a computer in a number of different ways, e.g. 25 in ASCII would be: • 0011 0010 0011 0101 • Alternatively in pure binary draw a table of powers of 2. Then find the largest power of 2<=25 (16). Subtract 16 from 25 and repeat • Value 128 64 32 16 8 4 2 1 0 0 0 1 1 0 0 1 16 + 8 + 1 = 25 • To translate from binary to decimal perform same process backwards • Value 128 64 32 16 8 4 2 1 0 1 0 0 0 1 0 1 64 + 4 + 1 = 69

  20. Binary • Example • The yable shows numbers 0 1- in 4-bit binary code.

  21. Boolean Values • A Boolean variable can only have one of two values, true or false • Represented by a 1 or a 0 • Useful to be able to use a binary bit to show if something is true or false, e.g: • To show whether a disk drive is connected • To show if the ‘break’ key is pressed’ • Single bits used in this way are called Flags

  22. Binary Number System

  23. Bits and Bytes

  24. Main Memory Computer Memory • 250 bytes = 1 Petabyte Pb • 260 bytes = 1 Exabyte Ex • 270 bytes = 1 Zettabyte Zb • 280 bytes = 1 Yottabye Yb

  25. Base 10 Numbers

  26. Base 2 (Binary) Numbers

  27. Converting Decimal numbers to 8-bit Binary Numbers

  28. Converting 8-bit Binary Numbers to Decimal Numbers

  29. Four-Octet Dotted-decimal Representation of 32-Bit Binary Numbers

  30. Hexadecimal

  31. Boolean or Binary Logic

  32. IP Addresses and Network Masks

  33. Summary

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