Consider an HTTP server and client scenario. Suppose that the RTT delay between the client and server is $48$ msecs and any HTTP message not containing an object has a negligible transmission time.

The browser uses PERSISTENT mode and a TCP connection has already been established, and the session is ongoing for some time with the server.$$

Suppose the client again makes $20$ requests, one after the other, waiting for a reply to a request before sending the next request. Assuming the client is using HTTP $1\mathrm{.}1$ and the IF$-$MODIFIED$-$SINCE header line. Also assume $30\%$ of the objects requested have NOT changed since the client downloaded them $($before these $20$ downloads are performed$),$ each requested object is $728$ bytes, and the server uplink speed is $72$ Mbps$.$

How much time elapses in milliseconds between the client transmitting the first request, and the completion of the last request?

Round your answer to $2$ digits after the decimal point.

Consider an HTTP server and client scenario. Suppose that the RTT delay between the client and server is $48$ msecs and any HTTP message not containing an object has a negligible transmission time.

The browser uses PERSISTENT mode and a TCP connection has already been established, and the session is ongoing for some time with the server.$$

Suppose the client again makes $20$ requests, one after the other, waiting for a reply to a request before sending the next request. Assuming the client is using HTTP $1\mathrm{.}1$ and the IF$-$MODIFIED$-$SINCE header line. Also assume $30\%$ of the objects requested have NOT changed since the client downloaded them $($before these $20$ downloads are performed$),$ each requested object is $728$ bytes, and the server uplink speed is $72$ Mbps$.$

How much time elapses in milliseconds between the client transmitting the first request, and the completion of the last request?

Round your answer to $2$ digits after the decimal point.