1. (4 marks) The application layer provides services to the user. Communication is provided using a logical connection, which means that the two application layers assume that there is an imaginary direct connection through which they can send and receive messages. Alice and Bob assume that there is a two-way logical channel between them through which they can send and receive messages. The actual communication, however, takes place through several devices. However, different types of application layer protocols have different types of architecture and they transfer data using different types of systems. The nature of this application, however, is different from other applications. So, where do you think that the „push-pull‟ communication system is used? And how this system differs from the traditional client-server architecture as used in WWW, HTTP etc.? Draw figures, if appropriate.

1. (4 marks) The application layer provides services to the user. Communication is provided using a logical connection, which means that the two application layers assume that there is an imaginary direct connection through which they can send and receive messages. Alice and Bob assume that there is a two-way logical channel between them through which they can send and receive messages. The actual communication, however, takes place through several devices. However, different types of application layer protocols have different types of architecture and they transfer data using different types of systems. The nature of this application, however, is different from other applications. So, where do you think that the „push-pull‟ communication system is used? And how this system differs from the traditional client-server architecture as used in WWW, HTTP etc.? Draw figures, if appropriate.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter13: Internet And Distributed Application Services

Section: Chapter Questions

Problem 15VE

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