IBM C2090-421 Exam Questions : InfoSphere DataStage v8.5

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. What would help debug the run-time environment?

A) View detailed runtime stats through Job monitor in Director Client.
B) $APT_VERBOSE
C) Check the message filters for the job.
D) $OSH_PRINT_SCHEMAS

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

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

3. A customer must compare a date column with a job parameter date to determine which output links the row belongs on. What stage should be used for this requirement?

A) Filter stage
B) Switch stage
C) Transformer stage
D) Compare stage

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

5. Which two statements are true about the use of named node pools? (Choose two.)

A) Clustered environments must have named node pools for data processing.
B) Named node pools constraints will limit stages to be executed only on the nodes defined in the node pools.
C) Using appropriately named node pools forces DataStage to use named pipes between stages.
D) Named node pools can allow separation of buffering from sorting disks.

Solutions: