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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

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

2. You would like to invoke a job sequence from a web service. How can this be done?

A) Create a DataStage routine that invokes the job sequence and invoke the routine from a DataStage job. Then use this job when creating the web service operation.
B) Select the job sequence when creating the web service operation,
C) Invoke the job sequence using the dsjob command.
D) Check the use job sequence checkbox when creating the web service.

3. Which of the following is not an ODBC connector property?

A) Username
B) Remote server
C) Password
D) Data source

4. You have a dataset that is range-partitioned and sorted. Which technique is most efficient to create globally sorted data file?

A) Insert Funnel stage before the final Sequential File stage and select Sort Funnel as Funnel Type.
B) Select Ordered collector method for the input link of the final Sequential File stage.
C) Select SortMerge collector method for the input link of the final Sequential File stage.
D) Insert Funnel stage before the final Sequential File stage and select Sequence as Funnel Type.

5. Which three actions can improve sort performance in a DataStage job? (Choose three.)

A) Minimize the number of sorts used within a job flow.
B) Run the job sequentially so that only one sort process is invoked.
C) Use the stable-sort option to avoid the random ordering of non-key data.
D) Adjust the "Restrict Memory Usage" option in the Sort stage.
E) Specify only the key columns which are necessary.

Solutions: