Pass the IBM C1000-187 Exam on Your First Attempt. This course provides 120 realistic practice questions across two full-length timed practice tests for the IBM Certified watsonx Mainframe Modernization Architect v1 Associate (C1000-187) certification exam. What You Get: 2 full practice tests with 60 questions each. 90-minute timed exam simulation per test. Detailed explanations for every answer. Questions mapped to all 7 official exam domains. Exam Domains Covered. Domain 1 watsonx Code Assistant for Z Overview 15 percent. Domain 2 Architecture and Components 17 percent. Domain 3 Discover and Explain Existing Mainframe Applications 17 percent. Domain 4 Optimize Mainframe Applications 7 percent. Domain 5 Refactor Mainframe Applications into Modular Components 18 percent. Domain 6 Transform COBOL Applications into Java Modules 15 percent. Domain 7 Validate Transformed Code 11 percent. About the IBM C1000-187 Exam. The C1000-187 exam validates your ability to architect COBOL-to-Java modernization workflows using IBM watsonx Code Assistant for Z. You must demonstrate proficiency with Application Discovery and Delivery Intelligence for scanning and mapping existing mainframe applications, IBM Refactoring Assistant for identifying modular service boundaries, and the wca4z IDE plugin for AI-assisted Java code generation. The passing score is 42 out of 60 questions which equals 70 percent. These practice tests mirror the actual exam format so you can identify knowledge gaps and build confidence before test day. Start practicing today.