Network Models
How do network devices interact with each other in a system?
Client-Server Networks
Centralised control where a central server provides services (e.g., a web server provides pages, a file server provides storage). Client computers actively request these services.
Benefits
- Centralised backups: Data is backed up reliably from one place.
- Central security: Antivirus and firewalls are managed centrally.
- Central software push: Ability to upgrade software centrally across all clients at once.
Peer-to-Peer (P2P)
Decentralised networks where all computers have equal status and no central master.
Characteristics
- No reliant server: If one machine breaks, the rest of the network continues to operate.
- Locally managed: Software must be installed and updated individually on each machine.
- Lower costs: No requirement to buy expensive, dedicated server hardware or server OS.
Examiner's Eye
When prompted for an advantage of a Client-Server network, use the specific phrase "centralised backups". Do not just write "backups". Writing "centralised backups" proves to the examiner you understand that data is pulled inward and secured in one reliable location, bypassing the need for end-users to manually save files to drives.
Check Your Understanding
1. A high school IT technician needs to deploy a brand new curriculum software package to all 300 computers in the building before Monday morning. Which network model is most appropriate and why?
2. Which of the following is considered a primary drawback of a Peer-to-Peer network?
3. What does it mean for a Client-Server network to have "centralised security"?
Stretch & Challenge (AO2 Application)
Written Exam Scenario (AO2/AO3)
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