Client–server network model

A network has servers and clients: the server provides services (e.g. files, websites, authentication), and the clients request and use these services. Examples of client–server networks include:
- File server: stores and manages files
- Web server: delivers websites
- Printer server: manages print jobs
- Authentication server: verifies usernames/passwords

Advantages of the client–server model	Disadvantages of the client–server model
Central file storage accessible from any client Central backups for all data Central software/security updates Team collaboration on shared documents Central account management	If the server fails, clients lose access Costly server hardware Single target for cyberattacks Can be overloaded by too many requests (e.g. DoS attacks)

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