In Centralized system, the network resources are placed and managed from a main location. Centralized network model allows administrators to manage the resources centrally, which other users can access. The network servers and other critical network resources are located in a central location in a secure and dedicated server room.
Fig: Centralized System
Centralized System Characteristics:
- One component with non-autonomous parts
- Components shared by users all the time
- All resources accessible
- Software runs in a single process
- Single point of control
- Single point of failure
A distributed system is a collection of independent computers, interconnected via a network, capable of collaborating on a task.
A distributed system consists of multiple autonomous computers that communicate through a computer network. The computers interact with each other in order to achieve a common goal. A computer program that runs in a distributed system is called a distributed program, and distributed programming is the process of writing such programs.
Fig: Distributed System
Distributed System Characteristics:
- Multiple autonomous components
- Components are not shared by all users
- Resources may not be accessible
- Software runs in concurrent processes on
- Different processors
- Multiple points of control
- Multiple points of failure