can iMac (21.5-inch 2009) be connect to Dell U2715H

[oat]

May I ask if the iMac (21.5-inch, 2009) is able to connect to the latest Dell U2715H monitor (2560x1440) using the mini-displayport to displayport cable come with the monitor and use the full resolution of U2715H?

I.e.
1. the mini-displayport end of the cable is connected to the iMac's mini-displayport and
2. the displayport end of the cable is connected to the U2715H monitor's displayport.

Thanks!

 

[oat]

advices are greatly appreciated!