31. If you are accessing Internet through a proxy server at your campus, in which of these scenarios will your requested file be likely provided by the proxy server instead of the origin web server?...

31. If you are accessing Internet through a proxy server at your campus, in which of these scenarios
will your requested file be likely provided by the proxy server instead of the origin web server?
(Select ALL that apply)
a. The file was recently requested by you and now you are requesting the same file again
b. The file was recently requested by you at your home and now you are requesting the same
file again
c. The file was recently requested by a client on the same Local Area Network as you are
and now you are requesting the same file
d. The file was recently requested by a client in the USA and now you are requesting the
same file

32. Which of the following statements about Selective Repeat are TRUE? (Select ALL that apply)
a. It discards a corrupt packet and buffers all subsequent packets
b. It is simpler to implement than Go-Back-N
c. It does not require a buffer at the receiver
d. It needs a separate timer for each packet to keep track of their timeout values