1.When a TCP Tahoe sender detects a packet loss, what is the new congestion window (cwnd) set to? A. 1 B. cwnd/2 C. cwnd -1 D. slow-start threshold (ssthresh)

2.Suppose that a Web server runs in Host C on port 80. Suppose this Web server uses persistent connections, and is currently receiving requests from two different Hosts, A and B. All of the requests are sent through different sockets at Host C. True or False.

3.Host A is sending a 10,000 byte file to Host B using a sliding window protocol. Packets are limited to 1000 bytes each, packets are numbered by packet number starting at 1, and the window size is 5 packets. Packet 7 is lost. Which packets are re-transmitted if Host A and Host B are using the Selective Repeat protocol? A. 4 B. 5 C.6 D.7