HTTP/2 allows single concurrent request over a multiple connection, improving web performance. 45 a.Falseb.True
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Assume you request a webpage consisting of one document and five images. The document size is 1 kilobyte, all images have the same size of 50 kilobytes, the download rate is 1 Mbps, and the RTT is 100 ms. How long does it take to obtain the whole webpage under the following conditions? (Assume no DNS name query is needed and the impact of the request line and the headers in the HTTP messages is negligible). a. Nonpersistent HTTP with serial connections. b. Nonpersistent HTTP with two parallel connections. c. Nonpersistent HTTP with six parallel connections. d. Persistent HTTP with one connection.
Akash M.
Consider a short, 10-meter link, over which a sender can transmit at a rate of 150 bits/sec in both directions. Suppose that packets containing data are 100,000 bits long, and packets containing only control (e.g., ACK or hand- shaking) are 200 bits long. Assume that N parallel connections each get 1/N of the link bandwidth. Now consider the HTTP protocol, and suppose that each downloaded object is 100 Kbits long, and that the initial downloaded object contains 10 referenced objects from the same sender. Would parallel downloads via parallel instances of non-persistent HTTP make sense in this case? Now consider persistent HTTP. Do you expect significant gains over the non-persistent case? Justify and explain your answer. Assuming the speed of light is 300*10^6 m/sec.
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