Here you have the valid questions for 500-651 ASASE, I passed the exam last month with more than 93X.
There are few questions that are wrong, but you can easily identify them. The only material (which was in most part of the exam) I found to study for this exam is on Cisco Sales Connect, here I post the link:
Link for the questions:
!Stay prepared and good luck!.
Edited by DeepCmprhnsn, 10 May 2019 - 04:27 AM.