In
https://coderanch.com/t/659977/Wiki/Ocpjp-Faq, some links are 404 pages.
For instance:
What books should I refer to when studying for the OCPJP?
https://coderanch.com/how-to/java//OcpjpFaq#books
Are there any mock exams that allow Exam Objectives section-wise tests?
https://coderanch.com/how-to/java//OcpjpFaq#sectionWiseMocks
etc.