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IBM InfoSphere DataStage v8.5 Sample Questions:

1. You write a job control routine to control a sequence of jobs running as a single unit of work. What are three valid job status types you can trap for? (Choose three.)

A) DSJS.RUNFAILED
B) DSJS.STOPPED
C) DSJS.START
D) DSJS.RUNERROR
E) DSJS.RUNOK

2. You are setting up a clustered environment. Each node in the cluster has public and private network adapters. The private network uses fast Ethernet. Which two statements are true? (Select two)

A) You must use APT_PM_CONDUCTOR_HOSTNAME variable for optimal environment.
B) Using the host names on the private network for 'fastname' makes better performance.
C) The client machines on the public network must use the host name for the engine on the private network to connect.
D) Host name alias is not allowed for conductor node.

3. The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?

A) Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
B) Set the buffer mode to "no buffer" on the output links of both Data Sets.
C) Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
D) Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.

4. Which two tasks can the Slowly Changing Dimensions (SCD) stage perform? (Choose two.)

A) Look up whether a record with a matching business key value exists in a fact table. If it does not, retrieve a new surrogate key value and insert a new row into the fact table.
B) Look up whether a record with a matching business key value exists in a dimension table. If it does, mark the record as not-current, and generate a new record with new values for selected fields.
C) Look up whether a record with a matching business key value exists in a dimension table. If it does not, retrieve a new surrogate key value and insert a new row into the dimension table.
D) Look up whether a record with a matching business key value exists in a dimension table. If it does, add new values for selected fields to values lists for those fields.

5. You have a 3TB dataset hash-partitioned on CustID in a clustered environment. You need to join this dataset with 1GB of reference data on OrderID. Which technique is most appropriate?

A) Use Lookup stage, select auto partitioning for the stream link and hash-partition the reference link on CustI
B) Use Join stage, hash-partition and sort both link on OrderID.
C) Use Lookup stage, select auto partitioning for the stream link and entire partitioning for the reference link.
D) Use Lookup stage, select auto partitioning for both link.

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