IBM C2090-101 Online Practice
Questions and Exam Preparation
C2090-101 Exam Details
Exam Code
:C2090-101
Exam Name
:IBM Big Data Engineer
Certification
:IBM Certifications
Vendor
:IBM
Total Questions
:106 Q&As
Last Updated
:Jan 11, 2026
IBM C2090-101 Online Questions &
Answers
Question 1:
Which one of the following file formats is optimal for querying tables with many columns and performing aggregation operations such as SUM() and AVG()?
A. Text B. Avro C. JSON D. PARQUET
C. JSON
Question 2:
Which of the following is NOT TRUE regarding the Job Control Plane operator?
A. User-defined checkpoint logic can be coded in the logic section B. It must be added to each application that includes a consistent region C. It controls the notifications to set of operators that are included in a consistent region D. It has no input or output ports and appears as a stand-alone operator in an application graph
A. User-defined checkpoint logic can be coded in the logic section explanation:
Which of the following is TRUE regarding a schema In Jaql?
A. It specifies a particular type for each field B. It is used only when Jaql includes SQL statements C. It must be provided when the data format is not otherwise known D. It can be used both as a data constraint and to optimize processing and storage
B. It is used only when Jaql includes SQL statements
Question 5:
A large retailer is planning to create a data cloud using BigInsights. They would like to run queries using data that is stored in BigInsights as well as other databases like DB2 and Oracle. Which one of the following would enable them to write the queries without having to move data into one common data store?
When running Hive Queries using Apache Spark, which of the following execution engines is invoked?
A. Tez B. Spark C. HiveQL D. MapReduce
B. Spark explanation:
When running queries, you can set hive.execution.engine so as to choose the execution engine. To run on Spark, set it to spark. To run on MapReduce, set it to mr. Reference: https://www.ibm.com/support/knowledgecenter/en/SSPT3X_4.2.5/com.ibm.swg.im.infosphere.biginsights.admin.doc/doc/admin_hive_on_spark.html
Question 8:
You have social media data in a plain text file. You want to figure out the number of times the word "Watson" is mentioned in it. Which of the following steps will correctly allow you to visualize that data?
A. Create a master workbook, add a filter sheet, run the workbook, add chart B. Create a master workbook, create a child workbook, add a filter sheet, add chart C. Create a master workbook, edit the workbook, add a filter sheet, run the workbook, add chart D. Create a master workbook, create a child workbook, add a filter sheet, run the workbook, add chart
C. Create a master workbook, edit the workbook, add a filter sheet, run the workbook, add chart
Question 9:
One option to import data to your BigInsights cluster is to use Sqoop.
Which of the following examples shows a data exchange with a DB2 database by using the built-in DB2 connector?
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