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COMPUTER NETWORKS

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Manjula Pradeep Gunathilake

COMPTER NEWROKS WITH LAN & WAN

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COMPUTER NETWORKS
PREVIEW ,[object Object],[object Object],[object Object],[object Object],[object Object]
COMPUTER NETWORK A COLLECTION OF CMPTRS INTER-CONNECTED WITH THE HELP OF A MEDIA (WIRE,OFC,SATL etc..) IN SUCH A WAY THAT EXCHANGE OF DATA/INFO TAKES PLACE.
ADVANTAGES OF NETWORKING ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IMP TERMS ,[object Object],[object Object]
IMP TERMS ,[object Object],[object Object]
[object Object],[object Object],IMP TERMS
[object Object],[object Object],IMP TERMS
[object Object],[object Object],IMP TERMS
TYPES OF NETWORKS ,[object Object],[object Object],[object Object]
WINDOWS NETWORK OS ,[object Object],[object Object],[object Object],[object Object]
CLIENT-SERVER ,[object Object],[object Object],[object Object],[object Object],[object Object]
CLIENT-SERVER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PEER TO PEER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PEER TO PEER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
HYBRID NETWORKS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
NETWORK COMPUTERS CAN ALSO SHARE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
APPLICATIONS OF NETWORKING ,[object Object],[object Object],[object Object],[object Object],[object Object]
PRE-REQUISITES ,[object Object],[object Object]
TYPES OF CMPTR NETWKS BASED ON TRANSMISSION TECHNOLOGY ,[object Object],[object Object]
BROADCAST NETWORKS ,[object Object],[object Object],[object Object],[object Object]
PT TO PT NETWORKS ,[object Object],[object Object],[object Object],[object Object],[object Object]
TYPES OF COMPUTER NETWKS BASED ON GEOGRAPHICAL SPREAD ,[object Object],[object Object],[object Object],[object Object]
LOCAL AREA NETWORKS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
METROPOLITAN AREA NETWORKS ,[object Object],[object Object],[object Object],[object Object],[object Object]
WIDE AREA NETWORKS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
INTER-NETWORKS ,[object Object],[object Object]
WIRELESS NETWORKS ,[object Object],[object Object],[object Object]
LAN TOPOLOGIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
LAN – STAR TOPOLOGY
LAN – RING TOPOLOGY
LAN – BUS TOPOLOGY
LAN – HYBRID TOPOLOGY
DESIGNING: UNIT LEVEL LAN
DESIGN OF A LAN ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SUGGESTED LAYOUT OF UNIT LAN SERVER ADJT QM 2IC CO DOCU CELL PAY & ALLCES CELL D COY A COY B COY C COY G BR PRI Q BR A BR
CYBER SECURITY
INFO SECURITY
GUIDING PRINCIPLE ,[object Object]
INFO ASSETS ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],CAUSES OF SECURITY BREACHES
 
LIKELY BREACHES ,[object Object],[object Object],[object Object],[object Object],[object Object]
PERSONAL SECURITY ,[object Object],[object Object],[object Object],[object Object]
 
PHYSICAL SECURITY ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
HARDWARE SECURITY (Protection against crashes/breakdown) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
SOFTWARE SECURITY ,[object Object],[object Object],[object Object]
 
DATABASE SECURITY ,[object Object],[object Object],[object Object],[object Object],[object Object]
MGMT OF REMOVABLE MEDIA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
NETWORK SECURITY ,[object Object],[object Object],[object Object]
PROCEDURAL SECURITY MSR ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
SECURITY OF CL DOCU ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
SECURITY WHILE USING ARMY INTERNET ,[object Object],[object Object]
NEVER CONNECT THE INTERNET PC TO YOUR OFFICE LAN OR ARMY INTRANET
SECURITY MSR WHILE USING INTERNET ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Contd/-
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VIRUS PROTECTION ,[object Object],[object Object],[object Object]
 
REPAIR & MAINT ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
THANK YOU

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COMPUTER NETWORKS

Editor's Notes

  1. This module covers the very basics of internetworking. We’ll start with a little history that describes how the networking industry evolved. We’ll then move on to a section that describes how a LAN is built: essentially the necessary components (like NIC cards and cables). We then cover LAN topologies. And finally we’ll discuss the key networking devices: hubs, bridges, switches, and routers. This module is an overview only. It will familiarize you with much of the vocabulary you hear with regards to networking. Some of these concepts are covered in more detail in later modules.