IBM A2090-421 : Assessment: InfoSphere DataStage v8.5

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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. The derivation for a stage variable is: Upcase(input_column1) : ' ' : Upcase(input_column2). Suppose that input_column1 contains a NULL value. Which behavior is expected?

A) The job aborts.
B) The input row is either dropped or rejected depending on whether the Transformer has a reject link.
C) NULL is written to the target stage variable.
D) The target stage variable is populated with spaces or zeros depending on the stage variable data type.

2. In the job fragment shown in the exhibit, there are two Sort stages: the first (Sort1) sorts the data by state, the second (Sort2) sorts the data by state and area, No repartitioning occurs between the stages.
You have been asked to reduce the number of sorts to improve the performance of the job.

Which two ways might be used to accomplish this without changing how the job functions? (Select two)

A) Remove the second Sort stage. Add area as an additional sort key.
B) Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.
C) In the second Sort stage change the Sort Mode property of the state column to "Don't sort, previously sorted.".
D) In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".

3. 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 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.
B) 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.
C) Use a single FTP Enterprise stage and specify five URI properties (one for each file). Next, process the records without landing to disk.
D) 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.

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) 19
C) 12
D) 9

5. You are responsible for deploying objects into your customers production environment. To ensure the stability of the production system the customer does not permit compilers on production machines. They have also protected the project and only development machines have the required compiler. What two options will allow jobs with a parallel transformer to execute in the customers production machines? (Choose two.)

A) Set $APT_COPY_TRANSFORM_OPERATOR
B) Add $APT_COMPILE_OPT=-portable
C) Export the jobs with Information Server Manager with the executables.
D) Create a package with Information Server Manager and select the option to include executables.

Solutions: