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Token ring
Token Ring A token ring is a network topology in which devices communicate with a central controller using tokens instead of direct data transfer. The centr...
Token Ring
A token ring is a network topology in which devices communicate with a central controller using tokens instead of direct data transfer. The central controller acts as a trusted mediator, verifying and distributing tokens to ensure data integrity and security.
How it works:
Devices attached to the ring have a unique token assigned to them.
The central controller holds a pool of tokens, each representing a specific data unit.
Devices send requests to the central controller, requesting the data they need.
The central controller verifies the token's authenticity and releases the requested data unit to the requesting device.
The device returns the data to the central controller.
Benefits of a Token Ring:
Security: Tokens provide stronger authentication and prevent unauthorized access to data.
Data integrity: The central controller ensures that data is transmitted and received correctly.
Efficiency: Token rings eliminate the need for direct data communication between devices, reducing network overhead.
Scalability: The ring can accommodate a large number of devices, making it suitable for large networks.
Example:
Imagine a school network with teachers and students connected to a central server. To access a document, a student may first request the document over a token ring. The server verifies the token's authenticity and grants access to the document. This ensures that only authorized users can access sensitive information