Question

1. A user in Chicago, connected to the internet via a 100 Mb/s (b=bits) connection retrieves a 250 KB (B=bytes) web page from a server in London, where the page references three images of 500 KB each. Assume that the one-way propagation delay is 75 ms.

a- Approximately how long does it take for the page (including images) to appear on the user’s screen, assuming non-persistent HTTP using a single connection at a time

b- How long does it take if the connection uses persistent HTTP (no pipelining and single connection)?

c- Suppose that user’s access router has a 4 MB buffer (B=byte) on the link from the router to the user. How much delay does this buffer add during periods when the buffer is full?

PLEASE explain in full detail all numbers you use and where you derived them from. Thank you.

Answer 1