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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which two statements are correct when referring to an Aggregator Stage? (Choose two.)

A) Use Sort method for a limited number of distinct key values
B) Use Sort method with a large number of distinct key-column values
C) Use Hash method for a limited number of distinct key values
D) Use Hash method with a large number of distinct key-column values

2. You are asked by your customer to collect partition level runtime meta-data 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? (Select two)

A) $APT_PM_PLAYER_TIMINGS
B) $APT_PERFORMANCE_DATA
C) Enable the job property "Log report messages after each job run".
D) Enable the job property "Record job performance data".

3. Refer to the exhibit.

You submit a job from DataStage Director and then log onto your DataStage Linux server to issue the command "ps-ef | grepds" and receive the following screen:
Which process is the section leader for node2?

A) 7220
B) 7221
C) 7216
D) 7219

4. 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) Columns must be in consecutive order.
B) Input columns must all be of the same data type.
C) All columns are combined into a vector of the same length as the number of columns.
D) Input columns must form a numeric sequence.
E) 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.

5. The Change Apply stage produces a change Data Set with a new column representing the code for the type of change. What are three change values identified by these code values? (Choose three.)

A) Deleted
B) Edit
C) Remove Duplicates
D) Copy
E) Final

Solutions: