PCB for DC2100B

Hello.

I am developing a circuit board on the LTC3300-1 and wanted to look at an example of the DC2100B circuit board trace, but the file does not open in the archive file DC2100B.zip PCB.
Question:
1. In what program was the circuit board developed?
2. Can I open the DC2100B-1.PCB file in AltiumDesigner?