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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. You are required to use a Make Vector stage in your job. What three requirements must be met in order to use this stage? (Choose three.)

A) Input columns that do not have a name of form <column_name>0 to <column_name>n, where <column_name> is the column name and 0 and n are the first and last of its consecutive numbers will not be included in the vector and will be dropped.
B) Input columns must all be of the same data type.
C) Columns must be in consecutive order.
D) All columns are combined into a vector of the same length as the number of columns.
E) Input columns must form a numeric sequence.

2. A client has multiple servers connected with a high bandwidth switch and has installed DataStage on one of them. There are five files (with the same record layout) that must be retrieved from three other servers using FTP. Which approach will retrieve and process all five files in the minimal amount of time?

A) In a single job, use five separate FTP Enterprise stages with output links to a single Sort Funnel stage. Next, process the records without landing to disk.
B) Use a single FTP Enterprise stage and specify five URI properties (one for each file). Next, process the records without landing to disk.
C) Create a sequence containing five separate DataStage jobs which each retrieve a single file and append it to a common Data Set. Next, process the resulting Data Set in an sixth DataStage job.
D) In a single job, use three separate FTP Enterprise stages (one for each machine) with output links to a single Sort Funnel stage. Next, process the records without landing to disk.

3. A 100MB input dataset has even distribution across 400 unique key values.
When run with a 4-node configuration file, which two changes could improve sort performance in this scenario? (Select two)

A) Specify "Restrict Memory Usage" to 60MB on the Sort stage properties.
B) Alter the Sort stage properties to perform a stable sort.
C) Set $APT_TSORT_STRESS_BLOCKSIZE to 50M
D) Convert all numeric fields to varchars.
E) Specify Round Robin partitioning on the input link to the Sort stage.

4. You have a DataStage job on SMP environment. It contains an input sequential file, a Modify stage, followed by a Transformer stage, and an output Sequential File stage. The job is run with three nodes. The engine uses all default settings. How many processes will this job create?

A) 16
B) 12
C) 9
D) 19

5. In which two operations can you create DataStage projects? (Choose two.)

A) During DataStage installation.
B) When adding new projects from DataStage Administrator.
C) When creating a project in the IBM Information Server Console.
D) When exporting and importing a DataStage project from DataStage Director.

Solutions: