Pass the actual test with the help of COG-645 study guide
Last Updated: Aug 31, 2026
No. of Questions: 57 Questions & Answers with Testing Engine
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| Certification Vendor: | IBM |
|---|---|
| Exam Name: | IBM Cognos 10 BI Multidimensional Author |
| Exam Number: | C2090-645 |
| Certificate Validity Period: | 2 years |
| Available Languages: | English |
| Real Exam Qty: | 50-60 |
| Exam Price: | USD 200 |
| Exam Format: | Multiple choice, Scenario-based questions |
| Exam Duration: | 75-90 |
| Related Certifications: | IBM Cognos Analytics Certification IBM Cognos 10 BI Certification |
| Passing Score: | 60% |
| Sample Questions: | IBM COG-645 Sample Questions |
| Exam Way: | Online proctored exam via Pearson VUE or authorized IBM testing centers |
| Pre Condition: | Recommended familiarity with IBM Cognos 10 BI reporting tools and multidimensional OLAP concepts. |
| Official Syllabus URL: | https://www.ibm.com/training/certification |
| Section | Objectives |
|---|---|
| Topic 1: Advanced Reporting Techniques | - Performance optimization for OLAP reports - Crosstab and dimensional reporting |
| Topic 2: Analysis Studio Usage | - Working with sets and filters - Creating and customizing analysis reports - Drill-up, drill-down, and slicing |
| Topic 3: IBM Cognos BI Architecture Overview | - Architecture for multidimensional data access - Cognos 10 BI components and services |
| Topic 4: Multidimensional Data Modeling | - Dimensional modeling fundamentals - Hierarchies, levels, and members - OLAP concepts and cube structures |
| Topic 5: Querying Multidimensional Data | - Prompts and calculations in OLAP context - MDX query basics - Working with cube-based data sources |
| Topic 6: Security and Content Management | - Access control for multidimensional data - Role-based security in Cognos environment |
| Topic 7: Report Distribution and Scheduling | - Bursting OLAP-based reports - Scheduling multidimensional reports |
The COG-645 exam leads to the IBM Cognos certification, a Professional-level credential from IBM. It validates the skills measured by the IBM Cognos 10 BI Multidimensional Author syllabus and is a recognized step for IT professionals building their careers, and it sits alongside related credentials such as IBM Cognos 10 BI Certification, IBM Cognos Analytics Certification.
The IBM Cognos 10 BI Multidimensional Author exam includes 50-60 questions and gives you 75-90 to complete them. That works out to a fairly tight pace, so reading each question carefully but decisively matters more than perfectionism. If a question stalls you, flag it and move on; banking the easier points first keeps time pressure from snowballing near the end. Before test day, run at least one full timed session with the Actualtests4sure practice test so the rhythm feels familiar rather than rushed.
You need 60% to pass the COG-645 exam, and the official registration fee is USD 200. Keep in mind that a failed attempt means paying the full fee again to retake the exam, so it pays to be honest with yourself before booking a seat. A practical benchmark: work through the 57 practice questions at Actualtests4sure until you can score comfortably above the passing line in timed mode, then schedule your exam.
Recommended familiarity with IBM Cognos 10 BI reporting tools and multidimensional OLAP concepts. Because IBM may adjust its policies over time, we recommend confirming the latest requirements on the official exam page (official exam page) before you register.
Yes. Actualtests4sure offers a free PDF demo of the IBM Cognos 10 BI Multidimensional Author material, so you can review the question style and answer quality before making a decision. Every purchase also includes 365 days of free updates, and after that period you can extend your updates at a 50% discount, which keeps your preparation current through 2026 and beyond.
If you take the IBM Cognos 10 BI Multidimensional Author exam within 60 days of your purchase and do not pass, Actualtests4sure offers a full refund under its Money Back Guarantee. To apply, send a scanned copy of your exam enrollment slip together with your official Score Report in PDF format within 2 days of the exam date, and your claim will be processed within 7 days. The guarantee applies only to the corresponding exam: attempts made within 3 days of purchase, exams downloaded but never actually taken, free materials, and expired orders are not eligible, and the candidate name must match the purchaser name. If you would rather not take a refund, you can exchange your product for two additional exam preparation products of equal value and keep the update service on your original purchase. Delivery itself is instant: your product is available for download right after payment and is also sent to your email within one minute, and if it has not arrived within 2 hours, contact our support team. There is no limit on how many computers you can install it on.
The IBM Cognos 10 BI Multidimensional Author syllabus is divided into 7 main domains, including Analysis Studio Usage, Report Distribution and Scheduling, Multidimensional Data Modeling. Each domain carries a different share of the total score, so knowing where the weight sits helps you allocate your study time wisely. You will find the complete, up-to-date outline in the Exam Topics section above.
Question 1
Assuming that Star products and Husky products are sets,
which statement below is correct about the sets in the graphic?
A. The query displays each set as all the members of the level.
B. The report creates a query for each member of the set.
C. Each set can be sorted and aggregated.
D. Each set is a grouping of members from different hierarchies.
Question 2
A report author uses the following expression: lastPeriods(3,[2007/Mar]). What data will be returned when the report is run?
A. 3 months, including 2007/Mar and the preceeding 2 months
B. The total of currentMeasure for 3 months including 2007/Mar and the preceeding 2 months
C. The month March of each of the 3 years 2005, 2006, and 2007
D. The last 3 months before 2007/Mar
Question 3
Can a prompt be used in the expression of a slicer?
A. No, the slicer must be manually created by the report author.
B. No, the slicer syntax is not compatible with prompt syntax.
C. Yes, if the slicer is a hierarchy.
D. Yes, if the correct syntax is used.
Question 4
The dialog box shown appears when a report is run.
What should the report author do to correct the situation?
A. Modify the expression to change the 'currentMember' function to 'currentLevel'.
B. Ask the modeler to rename the hierarchy to '[sales_and_marketing].[Products].[Products].[Products]', and to republish the package.
C. Modify the expression to 'currentMember([sales_and_marketing].[Products].[Products])'.
D. Modify the expression to change the 'currentMember' function to 'currentHierarchy'.
Question 5
Based on the diagram,
if the expression firstSibling([2006 Q 1]) is used in the report, what item will be returned?
A. 2005 Q 1
B. 2006 Q 1
C. Nothing, because the return value equals the parameter
D. 2006 Q 4
Solutions:
| Question 1 Answer: C | Question 2 Answer: A | Question 3 Answer: D | Question 4 Answer: C | Question 5 Answer: B |
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