What is the judicial review of an order or decision by an administrative agency?

Code of Civil Procedure section 1094.5 sets forth the procedure for judicial review of an order or a decision by an administrative agency. (Bixby v. Pierno (1971) 4 Cal.3d 130, 137.) "The inquiry in such a case shall extend to the questions whether the respondent has proceeded without, or in excess of, jurisdiction; whether there was a fair trial; and whether there was any prejudicial abuse of discretion. Abuse of discretion is established if the respondent has not proceeded in the manner required by law, the order or decision is not supported by the findings, or the findings are not supported by the evidence." (Code Civ. Proc., 1094.5, subd. (b).)