minggu 4:networking

what is computer networking ??
-connecting a computer with other computer or other devices to enable them to communicate with each other .
It can be :
 -Computer devices/equipment
–transmission media to send/control data/signals,
–Communication devices to transmit/send data from sources to destinations
–softwares


There are several types of this LAN based geographic :
1.LAN-local area network
2.MAN-Metropolitan area network
3.WAN-Wide area network


And then we go to network component .We can categorise it into 5 component . 


1.Terminals
-Refers to data sources and destination .
examples-workstation,personal computer,terminals,automatic teller machine


2.Transmission Media
-used to transmit data in a networked enviroment
-transmit pulse through a medium
-there are 2 types of it, bounded and unbounded


Bounded-twisted pair wire,co-axial cable,fiber optic cable
Unbounded-AM and FM radio,TV broadcasting,Microwave signal


3.Network Electronic Devices
-Devices that control data transmission from sources to destination
-Also act as interface between different transmission media


Examples-Bridges,Hub,Routers,Multiplexers,Gateway,Private Branch


4.Network
-a network operating system (NOS)
-control data transmission,a network & it message,traffic and queues .
-provide certain administrative function,including security


5.Network Architecture Standards
-Standard to enable devices made by different companies to work/communicate with each other 
-Blueprint of standard for a network consisting of item such as choices of media,media interface,encoding method and transmission protocol.
-Needed to ensure interoperability between various devices and equipment made by different vendors .