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Connection-Oriented vs Connectionless Services

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Connection-Oriented vs Connectionless Services

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Questions and Answers

What is the main difference between connection-oriented and connectionless services?

Connection-oriented services involve immediate SDU transfer, while connectionless services do not.

Connectionless services require a three-phase setup, while connection-oriented services do not.

Connection-oriented services do not have to be of the same type, while connectionless services do.

Connectionless services have no connection setup, while connection-oriented services involve a three-phase setup. (correct)

Which protocol is an example of a connection-oriented service?

UDP

TCP (correct)

None of the above

In the context of layered services, what is a characteristic of TCP operating over IP?

TCP and IP are independent and do not have to be of the same type. (correct)

TCP cannot operate over IP in a connectionless manner.

TCP and IP have to be of the same type for proper operation.

TCP operates immediately over IP without any additional setup.

Study Notes

Connection-Oriented vs Connectionless Services

Connection-oriented services establish a dedicated end-to-end connection before data transmission, ensuring guaranteed delivery of data in the correct order.
Connectionless services do not establish a dedicated end-to-end connection, each packet may take a different route, and there is no guarantee of delivery or order.

Connection-Oriented Protocol Example

TCP (Transmission Control Protocol) is an example of a connection-oriented service, ensuring reliable, error-checked, and sequential delivery of data.

TCP Operating over IP

When TCP operates over IP, it provides a connection-oriented service on top of a connectionless IP service, adding reliability and guaranteed delivery to IP's best-effort delivery.

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Description

Test your understanding of connection-oriented and connectionless network services with this quiz. Explore the concepts of connection setup, data transfer, and release phases in connection-oriented services, as well as immediate data transfer and no connection setup in connectionless services.