introductio to network 1
Post on 14-Apr-2017
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Introduction to network
Dr. Eng. Mostafa Elgamala
RHCE, CCNA, CCAI, MCSA, CSCU, LDP
Why computer network? Sharing in resources, deliver communication services.
Classification of networks:1- Size
2- Topology
3- Network Model (network architecture):
Peer to peer
Client server based
Network components:
1- Computers:
2- NIC: Network Interface Card
3- NOS: ex. Windows, Unix, Linux
4- Media
5- Network devices: •Switch
•Router
•Firewall
•Access point
•IP telephony
•Modem
Network terminologies:
Port number: Well-known ports: 0:1023
Randomly selected ports (dynamic): 1024: 65535
Network communication modes: Connection oriented: slow, reliable
Connection-less: fast, not reliable
TCP/IP model
TCP/IP model
TCP/IP data flow
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