Semester 1 Module 1 Module Index Module Introduction

Semester 1 Module 1

Module Index • • • • Module : Introduction to Networking Connecting to the Internet Requirements for Internet connection PC basics Network interface card NIC and modem installation Overview of high-speed and dial-up connectivity TCP/IP description and configuration Testing connectivity with ping Web browser and plug-Ins Troubleshooting Internet connection problems Network Math • Binary presentation of data • Bits and bytes • Base 10 number system • Base 2 number system • Converting decimal numbers to 8 -bit binary numbers • Converting 8 -bit binary numbers to decimal numbers • Four-octet dotted decimal representation of 32 -bit binary numbers • Hexadecimal • Boolean or binary logic • IP addresses and network masks

Labs • • • 1. 1. 6 PC Network TCP/IP tools 1. 1. 7 Ping & Tracert 1. 1. 9 Troubleshooting PC&Network 1. 2. 5 Decimal to Binary 1. 2. 6 Binary to Decimal 1. 2. 8 Hexadicimal

Connection to the Internet

PC Hardware • • Resistor – Connector Light emitting diode (LED) Random-access memory (RAM) Read-only memory (ROM) Expansion slot Power supply Network interface card (NIC)

NIC • Protocols – Ethernet, Token Ring, or FDDI • Types of media – Twisted-pair, coaxial, wireless, or fiber-optic • Type of system bus – PCI or ISA A NIC must be installed for each device on a network Situations that require NIC installation include the following: • • • Installation of a NIC on a PC that does not already have one Replacement of a malfunctioning or damaged NIC Upgrade from a 10 -Mbps NIC to a 10/1000 -Mbps NIC Change to a different type of NIC, such as wireless Installation of a secondary, or backup, NIC for network security reasons

winipcfg

ipconfig

Ping ping 127. 0. 0. 1. ping IP address of host computer ping default-gateway IP address ping remote destination IP address

Ping

Tracert

Troubleshoot

Bit&Byte

Decimal system (Base 10)

Binary system (Base 2)

Conversion

Convertion • • • 218 = 11011010 218÷ 2=109 remainder 109÷ 2=54 remainder 54÷ 2=27 remainder 27÷ 2=13 remainder 13÷ 2=6 remainder 6÷ 2=3 remainder 3÷ 2=1 remainder 1÷ 2=0 remainder 0 1 1

Dotted Decimal notation

Hexadecimal 0 x 5 D

Conversion Bin to Hex

Boolean logic • NOT – • AND – • OR –

IP Math

IP Math 1111 00000000 written in dotted decimal as 255. 0. 0. 0 11111111 00000000 written in dotted decimal as 255. 0. 0 The IP address 10. 34. 23. 134 in binary is 00001010. 0010. 00010111. 10000110

IP Math • 00001010. 0010. 00010111. 10000110 1111. 000000001010. 00000000 • 10. 0 • 00001010. 0010. 00010111. 10000110 11111111. 00001010. 0010. 00000000 • 10. 34. 0. 0