C1000-198 Passing Score 2026: Exactly What You Need to Pass

The Passing Score Math: 47 of 66

The IBM Certified Db2 v12.1 Database Administrator - Professional exam (C1000-198, credential C9009700) is built around a simple threshold: 47 correct answers out of 66 questions. That is the number that separates a pass from a fail. You have 90 minutes for the entire exam, it is delivered in English, and it covers Db2 v12.1 for Linux, UNIX and Windows.

Put differently, you can afford to miss 19 questions and still pass. That margin sounds comfortable until you consider the exam's design: a mix of multiple-choice items, multiple-response items, and performance-based lab tasks. A single weak domain can quietly consume most of your 19-miss budget, so understanding exactly how the score works matters as much as knowing the content.

If you are still deciding whether to commit, the C1000-198 difficulty guide puts this threshold in context against the experience level IBM expects: at least two years of practical, hands-on Db2 work.

Why a Raw Count Is Not a Percentage Target

Many candidates convert 47/66 into a percentage and aim for that number on practice tests. That is a reasonable starting point, but treat it with caution. IBM publishes the required number of correct answers; it does not publish a detailed scoring formula, and it describes the domain weights as approximate. Here is what that means for your preparation:

• Do not assume equal weighting. The official materials give you a required count, not a statement that every question is interchangeable in every scoring sense. Plan to be comfortably above the line, not on it.
• Build a buffer. If your practice results hover right at the equivalent of 47 correct, real-exam nerves and unfamiliar wording can push you under.
• Ignore unverified claims. No population pass rate was verified in the sources used for this article, so any specific "X% of candidates pass" figure you see should be treated skeptically. Our pass rate analysis explains what can and cannot be said responsibly.

How the Exam Format Shapes Your Score

IBM states that the exam includes both multiple-choice questions and performance-based lab tasks. That blend changes how you should think about the 47-correct threshold.

Multiple-choice and multiple-response items

Standard multiple-choice items reward precise knowledge of Db2 behavior: which command, which configuration parameter, which catalog view, which privilege. Multiple-response items, which the official sample demonstrates, are less forgiving because you must identify every correct option rather than the single best one. Read the stem carefully for how many selections are required before you click anything.

Performance-based lab tasks

Lab tasks test whether you can actually do the work, not just recognize terminology. IBM does not publish a separate practical-assessment time, so lab work comes out of the same 90 minutes as everything else. If you have only studied by reading, these tasks are where your hands-on gap will show. The C1000-198 requirements guide explains why IBM frames two years of practical experience as the intended candidate profile.

Where the Points Live: Domain Weights

IBM's study guide lists six exam-objective sections whose approximate weights total 100%. Because you need 47 of 66 correct, the weights tell you where your points are most likely to come from, and where a weak area does the most damage.

Operating alone represents roughly a third of the exam. Add Monitoring and you are past half. A candidate who is excellent at day-to-day operations and performance monitoring but weak elsewhere can still fall short, because the smaller domains together still account for a meaningful share of the 66 questions. For a full walkthrough of all six sections, see the C1000-198 exam domains guide.

What to Master in Each Domain

The passing score is only reachable if you convert the weights into concrete Db2 skills. Below is a domain-by-domain view of the kinds of topics a Db2 v12.1 DBA should be fluent in.

One small wording note: the detailed study guide names the first section "Design and Architecture," while IBM's web summary says "Design and Architect." Both refer to the same 9% area, so do not let the variation confuse you when comparing sources.

Pacing 66 Questions in 90 Minutes

Ninety minutes across 66 questions averages out to a little under 1.4 minutes per question. That average hides a real problem: lab tasks and multi-step scenario questions take longer than simple recall items. A workable approach:

1. First pass: bank the easy points. Answer anything you know immediately. You need 47 correct, and quick wins on straightforward questions create the time cushion for harder ones.
2. Mark and move. If a question requires heavy reasoning, flag it and continue rather than burning several minutes early.
3. Respect the lab tasks. Since no separate practical time is published, budget for them within the same clock. Do not leave them for the last few minutes.
4. Re-read multiple-response stems. A missed selection costs you the whole item.
5. Use leftover time on flagged items. Never leave a question unanswered.

Sequencing Your Preparation by Weight

Generic study plans ignore that this exam is lopsided toward Operating. A sequence that mirrors the weights puts your hands-on time where the points are. For a fuller plan, see the C1000-198 study guide; the outline below shows how the weights translate into an order.

IBM notes that recommended courses are preparation and do not create additional exam domains, so use training to support the six listed sections rather than treating it as extra scope. The C1000-198 training overview covers the options. When you reach full-length practice, run timed sets on the C1000-198 practice test site to see how you perform against the 47-of-66 line.

Retake Rules and What a Miss Costs You

Falling short is recoverable, but the rules are firm. According to IBM's policy terms:

• You may attempt the same exam at most two times within any 30-day period.
• Each retake is charged at the regular retake price.
• You cannot retake an exam you have already passed.

No current certification-exam fee was verified in the sources used here, so confirm the live price at checkout. Our certification cost breakdown discusses budgeting, including the possibility of a retake. The practical lesson is to treat your first attempt as a real attempt: schedule it when your timed practice results sit comfortably above the 47-correct equivalent, not when you merely feel close.

Whether the credential is worth that investment depends on your role. The ROI analysis and Db2 job market overview look at who benefits most, typically database administrators working with Db2 on Linux, UNIX, and Windows.

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