computer network fundamentals II

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Computer Network Services

objectives

• Troubleshooting Network
• PING

• IPCONFIG | ifconfig

• Domain Name
• Domain Name System (DNS)
• Dynamic Host Configuration Protocol (DHCP)

IP Address Lookup

Binary (Base - 2)

IP Address Lookup

• ipconfig
• ipconfig/all

Ping

Binary to Decimal Conversion

Decimal to Binary Conversion

Computer Networks

• Collection of interconnected hosts
• Enables its hosts to share and exchange data
• Network or network creates Internet
• CPU accesses location in RAM quickly

1. LAN - covers an office, a house etc
2. MAN - covers a city or metropolitan
3. WAN - covers inter states, continents etc

Computer Network Components

• Host; pc, laptop, camera
• Hub
• Switch
• Router
• Cable
• Firewall

TCP/IP Overview

• Entire suite of communication protocol
• Transmission Control Protocol (TCP) and the Internet Protocol (IP).
• Open standard and inter operable
• Can run on Ethernet, DSL, optical, etc

IPv4 Addressing

• 32 bit
• Uniqueue on a given network or internet
• Hirarchical addressing scheme

IP Address Classes

Kurose James F and Keith W. Ross : Computer Networking: A Top-Down Approach Featuring the Internet, Pearson Education 2005. William Stallings, Computer Networking with Internet Protocolsand Technology, Pearson Education 2004. Important publications in computer networks Network Communication Architecture and Protocols: OSI Network Architecture 7 Layers Model

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