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3.3 Network Characteristics ((Enter domain name in browser., Browser…
3.3 Network Characteristics
What is Network Characteristics?
It is a group of computer systems and other computing hardware devices that are linked together through communication channels to facilitate communication and resource-sharing among a wide range of users.
Peer to Peer Network:
This is where computers are linked to each other. They send data packets between/through each other instead of a dedicated server.
Benefits:
Do not need network OS as there is no server.
Do not need ICT specialists because each user sets access rights.
One PC failing will not bring down the entire network.
Limitations:
Performance will decrease with more people logged in.
Cannot perform a central backup of files.
Files may be difficult to locate due to each individual folder structure.
Client Server:
Files which are stored on a dedicated server. Server will be accessed at all times to retrieve and save files.
Benefits:
All files are stored centrally.
Backups can be initiated by ICT specialists.
Files will be available even if some client PCs fail.
Limitations:
Requires a network OS.
Servers are expensive.
DNS (Domain Name Server)
It is the phonebook of the Internet, connecting web browsers with websites.
Enter domain name in browser.
Browser contacts DNS to translate the domain name into an IP address.
IP address sent back to the browser.
IP address attached to data packet to be sent.
Data back travels to destination using the IP address.
End servers send back requested data.