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Computer Networks
Doung DeipMoutaz Sioufi
April 1st , 2011
why
Computer Networks
Why networks ?
Computer Networks
Share Information & Knowledge
Computer Networks
Input information“Data entry”
Hardware & Recourses technology
Computer Networks
Floppy Disks
Computer Networks
Earlier Multi-User system UNIX
Computer Networks
Network TypeOSIEthernetProtocols
Network TypeOSIEthernetProtocols
Infrastructure
Computer Networks
Infrastructure
Computer Networks
Infrastructure
Cables
Network Interface Card
* Hub* Switch* Router
Computer Networks
Network TypeOSIEthernetProtocols
Token BusToken RingARCnet
Network TypeOSIEthernetProtocols
Infrastructure
Computer Networks
Network Type Token Bus
Computer Networks
Network Type Token Bus
Computer Networks
Network Type Token Ring
Computer Networks
Network Type ARCnet
Computer Networks
Network TypeOSIEthernetProtocols
StructureFlow3way handshake
Infrastructure
Computer Networks
OSI Structure
Computer Networks
OSI Flow
Sender Receiver
Are we in sequence ?
are you still there?No Wait a bit!
Go On
Computer Networks
OSI 3 way handshake
Computer Networks
Network TypeOSIEthernetProtocols
SpecificationsCableCollision
Infrastructure
Computer Networks
Ethernet Specifications
10-Base2
Transmit 10 mega bit per second Base on the connection 2 = coaxial 5 = AUI connector T = RJ 45 F = fiber optic
Full DuplexTransmitReceive
Computer Networks
Ethernet cable
RJ45
Computer Networks
Ethernet Collision
Sending JAM signal
Each has to wait different time
To Start over again
Collision
Computer Networks
Network TypeOSIEthernetProtocols Addressing
TCP / IPUDP
Infrastructure
Computer Networks
Protocols Addressing
IPv4
Computer Networks
Protocols Addressing
The Endless Address
Computer Networks
Protocols TCP vs UDP
UDP says“Here is the data”
TCP says “ I need to make sure that you get it all ; correct”
Computer Networks
The BIG network Internet “WAN”
Computer Networks
Todd Lammle (2007). CCNA: Cisco Certified Network Associate, Study Guide. Fifth Edition Chapters One, Two and Three
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