C2090-303の無料問題集（134題）、C2090-303認定試験参考書

IBM C2090-303 問題集

試験コード：C2090-303

試験名称：IBM InfoSphere DataStage v9.1

最近更新時間：2025-06-12

問題と解答：全134問

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質問 1：
What two Information Server tools can be used to create deployment packages for DataStage jobs? (Choose two.)
A. istool
B. Information Server Manager
C. Information Server Web Console - Administration tab
D. InfoSphere Metadata Assset Manager
E. Information Server Console
正解：A,B

質問 2：
What is the correct method to process a file containing multiple record types using a Complex Flat File stage?
A. Flatten the record types into a single record type.
B. Define record definitions on the Constraints tab of the Complex Flat File stage.
C. Load a table definition for each record type on the Records tab of the Complex Flat File stage.
D. Manually break the file into multiple files by record type.
正解：C

質問 3：
Each row contains the CustID, ProductID, ProductType and TotalAmount columns. You want to retain the record with the largest value in the TotalAmount column for each CustID and ProductType using a RemoveDuplicates stage. How can this be accomplished?
A. Hash-partition on CustID. Sort on CustID, ProductType and TotalAmount.
B. Hash-partition on CustID, ProductType and TotalAmount. Sort on CustID, ProductType and TotalAmount.
C. Hash-partition on ProductType. Sort on ProductType, CustID and TotalAmount.
D. Hash-partition on TotalAmount. Sort on CustID, ProductType and TotalAmount.
正解：A

質問 4：
Your job is using the Sequential File stage as a source. Identify two stage property configurations that will allow you to accomplish parallel reads? (Choose two.)
A. Read Method property set to 'Specific File(s)' with only one file specified and the 'Readers Per Node' property value set to greater than 1.
B. Read Method property set to 'Specific File(s)' with more than one file specified and each file specified has the same format/column properties.
C. Read Method property is set to 'Parallel' with the Key property set to a Input column that has the file names.
D. Read Method property set to 'File Pattern' and the environment variable $APT_IMPORT_PATTERN_USES_FILESET is set to 'FALSE'.
E. Read Method property set to 'File Pattern' and the 'Readers per Node' property value set to greater than 1.
正解：A,B

質問 5：
You have made a copy of your job and made major changes to a job in your project. You now want to identify all the changes that have been made. What task will allow you to identify these changes?
A. Export the original job to a backup directory.
B. Select the job, then right click Compare against.
C. Export the modified job to the backup directory.
D. Select the job, then right click Cross Project Compare.
正解：B

質問 6：
Which two file stages allow you to configure rejecting data to a reject link? (Choose two.)
A. Compare Stage
B. Big Data File Stage
C. Complex Flat File Stage
D. Lookup File Set Stage
E. Data Set Stage
正解：B,C

質問 7：
How must the input data set be organized for input into the Join stage? (Choose two.)
A. Key partitioned
B. Sorted by Join key
C. Unsorted
D. Entire partitioned
E. Hash partitioned
正解：A,B

質問 8：
You are asked by your customer to collect partition level runtime metadata for DataStage parallel jobs. You must collect this data after each job completes. What two options allow you to automatically save row counts and CPU time for each instance of an operator? (Choose two.)
A. Enable the job property "Record job performance data".
B. Click the Performance Analysis icon in the toolbar to open the Performance Analyzer utility.
C. Open up the job in Metadata Workbench and select the "Data Lineage" option.
D. $APT_CPU_ROWCOUNT
E. $APT_PERFORMANCE_DATA
正解：A,E

質問 9：
What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)
A. RCP forces a developer to define all columns explicitly.
B. Only columns that are defined as VarChar need RCP enabled.
C. Only columns used in the data flow need to be defined.
D. Columns not specifically used in the flow are propagated as if they were.
E. Sequential files don't require schema files when using RCP.
正解：C,D

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IBM InfoSphere DataStage v9.1 認定 C2090-303 試験問題:

1. When using Runtime Column Propagation, which two stages require a schema file? (Choose two.)

A) DB2 Connector stage
B) Sequential File stage
C) Pivot stage
D) Peek stage
E) Column Import stage

2. A job using a one-node configuration file writes to a target Sequential File stage. The target Sequential File stage has been set to write to three different sequential files. How many instances of the Sequential File stage will run in parallel?

A) The job will abort, because a configuration file with at least three nodes is required.
B) Two.
C) Three.
D) One.

3. The data going into the target Sequential Files stage is range-partitioned and sorted. Which technique method would be the most efficient to create a globally sorted target sequential file?

A) Select the Ordered collector method for the final Sequential File stage.
B) Insert a Funnel stage before the final Sequential File stage and select Sequence as Funnel Type.
C) Select an in-stage sort in the final Sequential File stage.
D) Select the Sort Merge collector method for the final Sequential File stage.

4. A DataStage job uses an Inner Join to combine data from two source parallel datasets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)

A) Disable job monitoring.
B) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.
C) Explicitly specify hash partitioning and sorting on each input to the Join stage.
D) Unset the Preserve Partitioning flag on the output of each parallel dataset.
E) Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.

5. Which Oracle data type conversion is correct?

A) Oracle data type RAW converts to RAW in Oracle Connector stage.
B) Oracle data type NUMBER(15,0) converts to INT32 in Oracle Connector stage.
C) Oracle data type NUMBER(6,0) converts to INT32 in Oracle Connector stage.
D) Oracle data type NUMBER converts to DECIMAL(38,0) in Oracle Connector stage.

質問と回答：

質問 # 1
正解： B、E

質問 # 2
正解： C

質問 # 3
正解： A

質問 # 4
正解： B、E

質問 # 5
正解： C