C1000-187 — IBM Certified watsonx Mainframe Modernization Architect v1 - Associate Practice Test

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Description

Moving COBOL applications on IBM Z toward modular, modern code is the work C1000-187 certifies at the associate level. It assumes you've used watsonx Code Assistant for Z and know mainframe basics such as CICS, IMS and Db2. Refactoring, explaining existing code, the tool's architecture and COBOL-to-Java transformation make up most of the practice questions.

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C1000-187IBM Certified watsonx Mainframe Modernization Architect v1 - Associate
Mapped
Domains Covered
watsonx Code Assistant for Z Overview
Architecture and Components
Discover and Explain Existing Mainframe Applications
Optimize Mainframe Applications
Refactor Mainframe Applications into Modular Components
Transform COBOL Applications into Java Modules
Validate Transformed Code

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Q 50 / 5002:14
Which protocol operates at the transport layer?
A HTTP
B TCP
C ARP
D ICMP
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Correct
Option B is correct — TCP operates at the transport layer
Why?
TCP (Transmission Control Protocol) provides reliable, connection-oriented communication at Layer 4 of the OSI model.

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C1000-187 Questions

Study from 146 practice questions aligned to the latest C1000-187 objectives.

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Why is TCP connection-oriented?
TCP uses a three-way handshake (SYN, SYN-ACK, ACK) to establish a reliable session before data transfer begins...

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Frequently asked questions

Everything you need to know about prepping for C1000-187.

What is the C1000-187 exam format?
Official format is typically 60 questions, 90 minutes, passing score 70%/Not publicly specified.
How much does the C1000-187 exam cost?
The official exam fee is $200 USD. Pricing may vary by country, currency, or voucher.
What topics are on the C1000-187 exam?
The C1000-187 syllabus is organized into 7 domains. (Last updated: 2025-01-01)
  • Refactor Mainframe Applications into Modular Components (18%)
  • Architecture and Components (17%)
  • Discover and Explain Existing Mainframe Applications (17%)
  • watsonx Code Assistant for Z Overview (15%)
  • Transform COBOL Applications into Java Modules (15%)
  • Validate Transformed Code (11%)
  • Optimize Mainframe Applications (7%)
How should I prioritize the C1000-187 syllabus?
Start with the highest‑weight domains first: Refactor Mainframe Applications into Modular Components, Architecture and Components, Discover and Explain Existing Mainframe Applications. Then work down the list and use practice questions to validate each topic.
What are the prerequisites for C1000-187?
Recommended experience includes Foundational expertise in integration and application architectures for modernizing business applications on IBM Z. Use the syllabus domains above to identify any gaps before you schedule the exam.
Is the C1000-187 exam active in 2026?
Current status: ACTIVE. Last content update: 2025-01-01.
How long is the C1000-187 certification valid?
Certification validity is typically Not specified by IBM. Recertification options vary by vendor and program.
When was C1000-187 released and when does it retire?
Released: 2025-01-01.
How many C1000-187 practice questions are included on ExamJungle?
This C1000-187 practice test includes 146 practice questions in the simulator, with explanations and study tools.
Is this the real C1000-187 exam?
No, but the questions mirror the format, difficulty, and objectives so you are fully prepared.
How long do I get access?
Access depends on your plan, with ongoing updates to the C1000-187 pool.
Can I study on mobile?
Yes, the simulator is optimized for desktop and mobile so you can keep studying anywhere.
Does this include explanations?
Yes, detailed explanations are included for every question.

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