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INTERNET TECHNOLOGY (NETWORK (TRANSMISSION MEDIA REFERS TO THE MATERIALS…
INTERNET TECHNOLOGY
NETWORK
*A COLLECTION OF COMPUTERS AND DEVICES CONNECTED TOGETHER VIA COMMUNICATION DEVICES AND TRANSMISSION MEDIA
COMMUNICATION DEVICES REFERS TO ANY HARDWARE THAT TRANSMITS DATA, INSTRUCTIONS AND INFORMATION BETWEEN SENDING DEVICE AND RECEIVING DEVICE
EX: NETWORK CARDS, MODEMS CARDS, WIRELESS ACCESS POINTS, ROUTES
TRANSMISSION MEDIA REFERS TO THE MATERIALS OR SUBSTANCES CAPABLE OF CARRYING ONE OR MORE SIGNALS
EX: CABLE,RADIO SIGNAL, SATELLITE SIGNAL
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ADVANTAGES
- FACILITIES COMMUNICATIONS
- SHARE DATA AND INFORMATION
- SHARE HARDWARE AND SOFTWARE
- TRANSFER FUND
DISADVANTAGES
- THEFT OF PERSONAL INFORMATION
- VIRUS THREAT
- PORNOGRAPHY
- SOCIAL DISCONNECT
NETWORK ARCHITECTURE
PEER TO PEER
EACH COMPUTER HAVE EQUAL CAPABILITIES & RESPONSIBILITIES TO SHARE HARDWARE, DATA / INFORMATION WITH OTHER COMPUTERS ON THE NETWORK
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ADVANTAGES
- EASY AND INEXPENSIVE TO SET UP THE NETWORK
- MORE RELIABLE BCAUSE FAILURE OF ONE PEER WILL NOT AFFECT OTHER PEERS
- ALL THE PEERS CAN SHARE THEIR RESOURCES TO OTHERS
DISADVANTAGES
- LACK OF SECURITY CONTROL OR OTHER MANAGEMENT FUNCTIONS
- DATA RECOVERY / BACKUP IS VERY DIFFICULT. EACH COMPUTER HAVE TO MAINTAIN ITS OWN BACKUP SYSTEM
CLIENT / SERVER
ONE / MORE COMPUTERS ACT AS SERVER & OTHER COMPUTERS CALLED CLIENT, REQUEST SERVICES FROM THE SERVER
SERVER / HOST : A COMPUTER THAT CONTROL ACCESS TO HARDWARE, SOFTWARE &OTHER RESOURCES ON THE NETWORK & PROVIDES A CENTRALIZED STORAGE STORAGE FOR PROGRAMS , DATA & INFORMATION
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*REFERS TO THE DESIGN OF COMPUTERS, DEVICES & MEDIA ON THE NETWORK
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