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Hyper Text Transfer Protocols ( HTTP)
The Hyper text protocols ( HTTP) is at the heart of the web. If a browser developer follows the rules of the HTTP, the browser will be able to retrieve web page from any web server that has also followed the rule soft he HTTP. HTTP define s the format and sequence of the message that are passed between browser and web server we will describe it in brief later in this chapter.
Q. Show the Flow characteristics? Flow characteristics Reliability - if lacking means that packets or ACKs are lost - more important with FTP, SMTP than with audio
what is inheritance in computer systems special permissions?
Q. Show V.32 standard? - ITU-T's V.32 standard was issued in 1991 for asynchronous and full-duplex operation at 14.4 Kbps. V.32bis - Is an extension of the V.32 technology?
Alice sends a message to Bob, encrypted with a symmetric key. Bob decrypts the message and finds it is a purchase order for an expensive workstation. When the time comes to deliver
Q. Show the application layer of Osi reference model? - The application layer is OSI layer that is closest to the user. - It offers network services to the user's applicatio
What are major types of networks and explain? Server-based network: Give centralized control of network resources and depend on server computers to give security and network
Computer Networks A computer networks can be defined as set of computer that interact among the individual computers sharing resources or information. Reference models
CSMA/CD - A Simple Definition A network station wishing to broadcast will first check the cable plant to make sure that no other station is currently transmit
Illustrate a traffic light is an example of what type of mechanism Ans) A Traffic light is an example of flow control.
Explain Persistence timer? To deal with the zero-size windows What if a receiver advertises that the window size is 0 (by sending ACK) and this ACK is lost? - A
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