Q. Layers of Distributed System architecture?

Layers of Distributed System architecture are:

• Presentation Layer is actual user interface. This layer receives input and presents output.
• Presentation Logic layer comprises processing essential to establish user interface. Example: Formatting output data, editing input data.
• Application Logic Layer comprises all the logic and processing needed to support actual business application and rules

Example: Calculations.

• Data Manipulation Layer comprises all the command and logic essential to store and retrieve data to and from database.
• Data Layer is actual stored data in database.