1 © 2003, Cisco Systems, Inc. All rights reserved. CCNA Course Introduction to Networking ntcenter.az NetWork Training Center

222 © 2003, Cisco Systems, Inc. All rights reserved. Requirements for Internet Connection

333 © 2003, Cisco Systems, Inc. All rights reserved. Network Interface Cards

444 © 2003, Cisco Systems, Inc. All rights reserved. NIC and Modem Installation

555 © 2003, Cisco Systems, Inc. All rights reserved. TCP/IP Description and Configuration

666 © 2003, Cisco Systems, Inc. All rights reserved. Testing Connectivity with Ping

777 © 2003, Cisco Systems, Inc. All rights reserved. Using the ping command If you are having connectivity problems, you can use the ping command to check the destination IP address you want to reach and record the results. The ping command displays whether the destination responded and how long it took to receive a reply. If there is an error in the delivery to the destination, the ping command displays an error message. You can get more information from this link:

888 © 2003, Cisco Systems, Inc. All rights reserved. Web Browser:

999 © 2003, Cisco Systems, Inc. All rights reserved. Troubleshooting Internet Connections

10 © 2003, Cisco Systems, Inc. All rights reserved. Binary Number System

11 © 2003, Cisco Systems, Inc. All rights reserved. Bits and Bytes Digital data transmitted over a network connection. A bit is a single numeric value, either '1' or '0', that encodes a single unit of digital information. A byte is a sequence of bits; usually eight bits equal one byte. For example, in Internet Protocol (IP)networking, IP addresses contain 32 bits or 4 bytes. The bits encode the network address so that it can be shared on the network.Internet Protocol (IP)IP addressesnetwork address The bytes divide the bits into groups. The IP address , for instance, is encoded with the following bits and bytes:IP address Bits are grouped into bytes to, generally speaking, increase the efficiency of computer hardware, including network equipment, disks and memory.

12 © 2003, Cisco Systems, Inc. All rights reserved. Bits and Bytes

13 © 2003, Cisco Systems, Inc. All rights reserved. Base 10 Numbers

14 © 2003, Cisco Systems, Inc. All rights reserved. Base 2 (Binary) Numbers

15 © 2003, Cisco Systems, Inc. All rights reserved. Converting Decimal numbers to 8-bit Binary Numbers

16 © 2003, Cisco Systems, Inc. All rights reserved. Converting 8-bit Binary Numbers to Decimal Numbers

17 © 2003, Cisco Systems, Inc. All rights reserved. Four-Octet Dotted-decimal Representation of 32-Bit Binary Numbers

18 © 2003, Cisco Systems, Inc. All rights reserved. Hexadecimal

19 © 2003, Cisco Systems, Inc. All rights reserved. IP Addresses and Network Masks

20 © 2003, Cisco Systems, Inc. All rights reserved. IP Addresses and Network Masks

21 © 2003, Cisco Systems, Inc. All rights reserved. IP Addresses and Network Masks Start menu- type CMD command - type ping

22 © 2003, Cisco Systems, Inc. All rights reserved.

23 © 2003, Cisco Systems, Inc. All rights reserved. THANKS Ntcenter.az