I Passed 70-293 with 950/1000, "ALHAMDULILLAH" few months ago.
P4S v2.73: http://www.ziddu.com/download.php?uid=bb...aqdlp0%3D8
Sadiqsaad Sims: http://www.ziddu.com/download.php?uid=aa...iZK6WlZWp4
Q1 - is c. No need to add a second cluster ip.
Q10 - is (click on print server, not DHCP Server). You would install a RRAS on the Print server and add a DHCP relay agent to find the DHCP on the other subnet.
Q50 - is a. Makes sense to install 2k3 dns server in *each office* to use both wins and dns since you have multiple new and legacy desktop OS's.