If DNS looks up occur every 10 minutes and the HTTP file references 8 items each time, how long would Non-persistent HTTP and no concurrent TCP connections last?
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If DNS looks up occur every 10 minutes and the HTTP file references 8 items each time, how long would Non-persistent HTTP and no concurrent TCP connections last?
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- If a DNS lookup is performed every 10 minutes and an HTTP file references 8 objects each time, how long would Non-persistent HTTP with no concurrent TCP connections last?If a DNS lookup happens every 10 minutes and an HTTP file references 8 objects each time, how long would Non-persistent HTTP with no concurrent TCP connections last?How much time does Non-persistent HTTP and no concurrent TCP connections expire if DNS searching up occurs once per 10 minutes, and each time the HTTP file mentions 8 objects?
- In HTTP version 1.0, a server marked the end of a transfer by closing the connection. Explain why, in terms of the TCP layer, this was a problem for servers. Find out how HTTP version 1.1 avoids this. How might a general-purpose request/reply protocol address this?if DNS looking up happens once every 10 minutes, and each time the HTTP file references 8 objects, how much time elapses with Non-persistent HTTP, and no parallel TCP connections?In the Internet of Things (IoT) web stack, what function do the protocols UDP and IPV6 serve? What exactly is the difference between a sensor having a static IP address and one that has a dynamically assigned IP address?
- The original HTTP protocol used TCP/IP as the underlying network protocol. For each page, graphic, or applet, a separate TCP session was constructed, used, and torn down. Because of the overhead of building and destroying TCP/IP connections, performance problems resulted from this implementation method. Would using UDP rather than TCP be a good alternative? What other changes could you make to improve HTTP performance?Are the TCP receive buffer and the application buffer on the client exactly the same thing when HTTP streaming is being used? How are they supposed to behave toward one another if they are unable to converse with one another?Answer truthfully or falsely. A single TCP segment may contain two different HTTP request messages when there are no permanent connections between the browser and origin server.
- Download delays for 100 objects (HTTP 1.1 with browser caching). Consider an HTTP 1.1 client and server. The RTT delay between the client and server is 2 seconds. Suppose the time a server needs to transmit an object into its outgoing link is 3 seconds, as shown below for the first of these 100 requests. initiate TCP connection RTT request file RTT file received time You can assume that any other HTTP message not containing an object sent by the client and server has a negligible (zero) transmission time. Suppose the client makes 100 requests, one after the other, waiting for a reply to a request before sending the next request. 352 secs Using HTTP 1.1, how much time elapses between the client transmitting the first request, and the receipt of the last requested object, assuming the client uses the IF- MODIFIED-SINCE header line, and 50% of the objects requested have not changed since the client downloaded them (before these 100 downloads are performed)? 350 secs 252 secs time to…When HTTP streaming is being used, are the TCP receive buffer and the application buffer on the client both the same thing? If they are unable to speak with one another, it is unclear how they will behave toward one another.Acknowledgements are a feature of transport layer protocols (such as the RDT 2.0 protocol that we covered before). What happens if an acknowledgement is in any way tainted? What process has been established to address this?