C1000-148 Exam Guide: Scope, Skills, Blueprint, and the Right Next Step
C1000-148 validated solution-architecture knowledge for IBM Cloud Pak for Business Automation v21.0.3, including infrastructure planning, architecture, sizing, performance, and security decisions. IBM positioned it for experienced solution architects at an intermediate level. The important scheduling decision comes first: IBM states that the exam and associated certification were withdrawn on September 30, 2025, and that C1000-148 was to be replaced by C1000-194. Use this guide to understand the retired exam’s scope, assess transferable skills, and decide whether to research the replacement instead of preparing for an unavailable sitting.
Confirm whether C1000-148 is still a viable target
C1000-148 is no longer a normal scheduling target because IBM states that the exam and its associated certification were withdrawn on September 30, 2025. A candidate researching this code should therefore verify the current IBM certification listing and investigate C1000-194 before buying training or planning an attempt.
The exam was the requirement for the IBM Certified Solution Architect – Cloud Pak for Business Automation v21.0.3 certification. IBM’s 2023 TechXchange certification document also listed C1000-148 as IBM Cloud Pak for Business Automation v21.0.3 Solution Architect. These references establish the historical identity of the exam, not current availability.
This distinction matters on a page about exam preparation. Historical exam material can still help someone understand the architecture covered by the older certification, but it should not be treated as evidence that a registration window, delivery appointment, price, score report, or certification award remains available.
Practical next action: open IBM’s current certification catalogue, search for the replacement code named by IBM, and compare its product version, objectives, and status with the historical C1000-148 scope. Do not assume that a replacement preserves the same blueprint or administration rules.
What role did the exam validate?
C1000-148 assessed whether a solution architect could shape a Cloud Pak for Business Automation v21.0.3 solution rather than merely recognize product terminology. IBM associated the role with defining infrastructure requirements, understanding the overall architecture, and addressing performance, security, and sizing.
The intended audience was not an entry-level administrator. IBM classified the certification as intermediate level for experienced solution architects. That positioning suggests that preparation should focus on design reasoning: matching requirements to platform capabilities, identifying constraints, and explaining why an architectural choice is appropriate.
A candidate with only isolated product familiarity may know component names but still struggle with architecture questions. The more relevant readiness test is whether you can move from a business or operational requirement to a defensible platform design, then examine that design for capacity, security, dependencies, and operational consequences.
If your goal is a current IBM credential, use the historical role description as background only and make the replacement certification’s official page the decision authority. If your goal is legacy knowledge, the role description provides a useful boundary for deciding what to study and what to leave out.
Which skills formed the foundation?
IBM recommended working knowledge of Linux, the OpenShift command-line interface and monitoring, databases, and LDAP. It also listed basic knowledge of CNCF Kubernetes, OpenShift, Kafka, Elasticsearch, Kibana, HDFS, machine learning, and OpenShift container storage. These are preparation prerequisites in the practical sense, not evidence of a separate mandatory prerequisite.
Treat the two skill groups differently. Working knowledge implies that you should be able to use or reason about the technology in an operational context. Basic knowledge means you should understand its architectural purpose, relationships, and common design implications without necessarily approaching the topic as a specialist administrator.
A sensible diagnostic is to take one proposed platform design and explain its operating environment. Can you describe the role of Linux and OpenShift in the deployment? Can you identify where databases and LDAP fit? Can you explain why messaging, search, storage, or analytics-related services might appear in a broader solution? If those answers depend on memorized product labels, strengthen the fundamentals before studying question sets.
Recommended action: create a skills inventory with three columns—confident, can explain with reference material, and unfamiliar. Place each IBM-listed technology in one column, then study the unfamiliar foundations before attempting timed practice. This is a preparation recommendation, not an IBM requirement.
How was the blueprint weighted?
The official objective distribution placed Platform Planning at 29%, Architecture at 30%, and Solutioning at 41%. Solutioning was the largest exam domain, so a study plan that spends equal time on every topic would not reflect the published blueprint.
Platform Planning at 29% concerned the planning layer of the design problem. Prepare to reason about requirements, infrastructure assumptions, sizing inputs, and the conditions that must be known before a platform architecture can be proposed.
Architecture at 30% concerned the structure and relationships of the Cloud Pak for Business Automation solution. Study how platform services, supporting technologies, security dependencies, and operational concerns fit together instead of learning each component as an isolated definition.
Solutioning at 41% concerned applying the architecture to a proposed solution. Practice selecting or evaluating an approach against requirements such as performance, security, capacity, and infrastructure constraints. The domain label must stay attached to its percentage: 41% is the published weight for Solutioning, not a general passing threshold or a measure of difficulty.
Use these weights to allocate attention, not to predict exact question wording. IBM’s published distribution does not authorize assumptions about which individual products, scenarios, or answer patterns will appear.
What do the exam mechanics imply for preparation?
IBM listed 60 questions, a requirement of 42 correct answers to pass, and 90 minutes for C1000-148. That combination makes both knowledge accuracy and decision speed relevant to historical preparation. It does not make memorization of recalled questions a safe substitute for understanding.
The published figures imply an average working pace of 1.5 minutes per question, calculated from the official 90-minute allowance and 60-question count. Treat that as a planning reference rather than a promise about a current replacement exam. C1000-194 may use different administration details, so verify its official page before scheduling.
A useful practice routine has three passes. First, answer questions without a clock and write the design principle behind each choice. Second, use a moderate time limit and mark questions where you are choosing between plausible architectures. Third, simulate a full historical-format session only after reviewing the errors from the first two passes.
Do not turn the 42-correct requirement into a personal guarantee. A practice score is evidence about the particular material and your current understanding; it is not proof that an exam attempt will succeed. Also avoid treating exam dumps or leaked questions as legitimate preparation. IBM Community content refers to practice questions for a different code, C1000-143, and does not validate C1000-148 content or guarantee passing.
Because the exam is withdrawn, use these mechanics only to understand the retired assessment. For any replacement, rely on the current IBM source for the authoritative question count, passing standard, time allowance, delivery method, and other time-sensitive details.
How should you study Platform Planning?
Study Platform Planning as a requirements-to-infrastructure exercise. Begin with the workload, users, data, availability expectations, integration points, security obligations, and operational model; then identify the infrastructure facts needed to support a defensible Cloud Pak for Business Automation design.
Build a planning worksheet rather than a list of definitions. Include the deployment assumptions, OpenShift and Kubernetes context, storage needs, database dependencies, directory integration, monitoring responsibilities, and likely performance constraints. The purpose is to expose missing information before someone commits to a topology or capacity estimate.
For each scenario you create, answer five questions: what must the solution do, what infrastructure must support it, which dependencies are external, what could become a bottleneck, and which requirement would change the design most significantly? This process develops the judgment expected from a solution architect more effectively than copying product descriptions.
Sizing deserves separate attention. Do not invent a universal sizing rule from an old exam guide. Instead, practice identifying the workload variables that should influence sizing and explaining why an underspecified capacity request cannot be answered responsibly. A strong answer distinguishes a known requirement from an assumption that must be validated.
Common mistake: starting with a favorite topology and forcing the requirements to fit it. Reverse the order. Establish the constraints first, then evaluate the architecture. That habit remains useful even when the target certification changes.
Planning checklist
Record the business capability, expected workload characteristics, data and identity dependencies, platform assumptions, operational ownership, security boundaries, and performance objectives. Highlight every item that is unknown. Unknowns are not minor omissions; they are reasons to qualify a recommendation before treating it as a final design.
How should you study Architecture?
Architecture preparation should produce a relationship map, not a catalogue of component names. Draw the Cloud Pak for Business Automation platform boundary, its OpenShift foundation, supporting data and identity services, integration paths, and the operational controls needed to keep the environment observable and maintainable.
Use IBM’s recommended technology list to guide the map. Kubernetes and OpenShift establish the container platform context; Linux and the OpenShift command-line interface support administration; databases and LDAP represent important dependencies; Kafka, Elasticsearch, Kibana, HDFS, machine learning, and OpenShift container storage represent additional technologies whose architectural roles you should be able to explain.
For every connection on the map, write the reason it exists and the consequence of failure or misconfiguration. For example, an identity dependency raises authentication and directory-availability questions; a data dependency raises persistence, access, backup, and capacity questions; a monitoring path raises observability and response questions. Keep these as study prompts, not claims about undocumented product behavior.
A useful review exercise is to explain the architecture to three audiences: an infrastructure engineer, a security reviewer, and a business sponsor. The infrastructure explanation should emphasize platform dependencies and capacity. The security explanation should emphasize identity, boundaries, and controls. The sponsor explanation should connect design choices to reliability and business outcomes.
Common mistake: confusing a technology’s presence with an architectural decision. Knowing that a named technology is associated with the recommended skills does not by itself tell you when to use it. Practice explaining the requirement that makes the technology relevant.
Architecture map exercise
Place each technology in one of four categories: platform foundation, data or identity dependency, integration or processing capability, and operations or observability. Then challenge each placement by asking what requirement, interface, or operational responsibility justifies it. This exposes name-recognition gaps quickly.
How should you study Solutioning?
Solutioning should receive the largest study allocation because IBM assigned the Solutioning domain 41% of the blueprint. Focus on comparing viable designs against explicit requirements, not on selecting an answer because it contains the most familiar product term.
Write short case studies with competing constraints. One can prioritize performance, another security isolation, another infrastructure limitations, and another operational simplicity. For each case, state the primary requirement, the trade-off, the assumptions, and the evidence you would request before final approval.
When reviewing an answer, ask whether it solves the stated problem at the correct architectural level. A response may describe a valid platform feature but still fail to address sizing, security, integration, or operational ownership. The strongest solutioning habit is to connect the proposed choice to the requirement and identify its cost or limitation.
Practice elimination carefully. Remove options that ignore a stated dependency, confuse platform layers, make an unsupported sizing claim, or solve a different problem. Then compare the remaining choices against the wording of the scenario. Do not add requirements that the question does not provide.
Common mistake: treating every scenario as a single-feature question. Solution-architect assessments often require several linked judgments. Read for the interaction between infrastructure, architecture, security, performance, and sizing before selecting an answer.
Decision record template
For each practice scenario, record the requirement, selected design, rejected alternative, decisive constraint, assumption, and verification step. If you cannot complete the rejected-alternative field, you may be recognizing a familiar answer rather than demonstrating solutioning judgment.
What is a practical study sequence?
A staged sequence is more efficient than beginning with random practice questions. Establish the technology foundations first, map the architecture second, work through planning and solution trade-offs third, and use timed review only after you can explain why an answer is correct.
Start with an orientation session. Confirm that you are studying the historical v21.0.3 scope, record the withdrawal status, and compare the current IBM replacement listing before committing significant time. Gather official product and certification material that is appropriate to the target you actually intend to pursue.
Next, close foundation gaps. Review Linux, OpenShift administration and monitoring, Kubernetes concepts, databases, LDAP, and the other IBM-listed technologies. The aim is not to become an expert in every technology; it is to remove the vocabulary and dependency gaps that prevent architectural reasoning.
Then build the architecture map and planning worksheet. Connect components to requirements and document the infrastructure questions behind sizing, performance, security, and operations. Use your notes to generate scenario questions, but do not present those self-created scenarios as real exam items.
After that, spend study time according to the published domains: Platform Planning at 29%, Architecture at 30%, and Solutioning at 41%. Keep the domain name with each percentage when planning. A candidate who is weak in Platform Planning should still remediate that weakness even though Solutioning has the largest allocation.
Finish with error-led revision. Group mistakes by cause—missing foundation, misread requirement, dependency oversight, unjustified assumption, or time pressure. Re-study the cause, then answer a new scenario that tests the same reasoning in a different context. Repeating the exact item only measures recall.
A flexible roadmap
Phase one is status and scope verification. Phase two is foundation review. Phase three is architecture mapping. Phase four is requirements, sizing, security, performance, and solution trade-off practice. Phase five is timed review and error correction. Set the length of each phase according to your background and the requirements of the current replacement exam.
How can you use practice questions responsibly?
Practice questions are most useful when they reveal a reasoning gap, not when they provide a script to memorize. IBM Community material supplied for this research discusses C1000-143 practice questions, not C1000-148, so it should not be used as evidence that a question bank matches this exam.
For any question source, check the exam code, product version, publication date, and stated provenance. Reject material that promises guaranteed success, claims to reproduce live questions, or encourages memorizing answers without explaining the architecture. No supplied source establishes that exam dumps are authorized, accurate, or sufficient.
Use each legitimate practice item as a structured review. Identify the requirement, list the relevant dependencies, eliminate options that violate the scenario, choose the best-supported design, and write one sentence explaining the trade-off. Then alter one condition—such as the security priority or infrastructure constraint—and see whether your decision changes.
Keep a question log with the topic, error type, correct principle, and follow-up source. This prevents a large question count from creating false confidence. A smaller set reviewed deeply can expose more transferable weaknesses than rapid repetition of items that you already recognize.
Which mistakes should you avoid?
The most damaging mistakes are administrative and architectural: preparing for a withdrawn exam without checking the replacement, treating a historical blueprint as current, studying component names without relationships, and using unsupported question claims as a substitute for knowledge.
Do not confuse the 42 correct answers listed for the historical C1000-148 format with a general certification rule. Do not carry the 60-question count or 90-minute allowance to C1000-194 without official confirmation. These figures belong to C1000-148 and should remain labelled that way.
Do not allocate all study time to the largest domain. Solutioning at 41% deserves substantial attention, but a weak foundation in Platform Planning at 29% or Architecture at 30% can undermine scenario performance across the exam. Use the weights to prioritize, then use diagnostic results to correct weaknesses.
Do not assume recommended skills are mandatory prerequisites. IBM listed them as recommended knowledge for the role. Your preparation decision should be based on whether you can use that knowledge in design reasoning, not on an invented checklist of formal eligibility conditions.
Do not interpret an old certification page as a promise of current delivery details. The supplied facts do not establish a current testing provider, delivery mode, language, price, appointment process, or accommodation policy for a replacement. Confirm those items directly with IBM before scheduling.
What should you do before investing more time?
First decide whether you need a current credential or historical Cloud Pak for Business Automation v21.0.3 knowledge. If you need a current credential, move immediately to IBM’s replacement information for C1000-194. If you need legacy knowledge, use the C1000-148 blueprint and role description as a bounded study reference while clearly treating the exam as withdrawn.
Second, compare the replacement’s official objectives with your skills inventory. Preserve transferable preparation—OpenShift, Linux, databases, LDAP, architecture mapping, security, performance, and sizing—but restart the scope review if the product version or domains differ.
Third, verify all scheduling facts from the current IBM source: exam status, registration path, delivery method, question and time details, passing standard, and any prerequisites or policy requirements. None of those current replacement details should be inferred from the historical C1000-148 page.
Finally, create a short decision record: target code, current status, product version, confirmed objectives, foundation gaps, and next review date. This prevents an old code from remaining in your study plan after IBM has moved the certification to a replacement assessment.
Conclusion
C1000-148 is best understood as a historical assessment of solution architecture for Cloud Pak for Business Automation v21.0.3, with published emphasis on Platform Planning at 29%, Architecture at 30%, and Solutioning at 41%. Its official withdrawal changes the candidate’s immediate priority: verify the replacement, C1000-194, before scheduling or purchasing preparation material. The architectural reasoning developed through requirements analysis, dependency mapping, sizing, security, performance, and trade-off review remains useful, but current exam facts must come from the replacement’s official IBM listing.
