From the developer: "The CCNA Practice Test for PalmOS from Boson Software runs on all Palm Pilot compatible PDA devices using PalmOS. Contains over 240 questions from the Windows-based version of the CCNA Practice Test from Boson, and also contains practice tests for the four CCNP tests. The CCNP tests are BSCN, BCRAN, CIT, and BCMSN. These tests will consist of at least 160 questions. All Boson Software products offer a money-back guarantee."