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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Refer to the exhibit.

You are responsible for improving performance for a given job. From reviewing the job dump score, you notice that many tsort operators are inserted. Join_1 is on columns "account", "po_date" and "hdr_number". Join_2 is based on "account", "hdr_number", "paid_date".
Which two actions will help you improve the performance without changing the business logic?
(Select two)

A) Insert sort stage between Join_1 and Join_2, subsort ("Don't sort, previously sorted") on "account", sort "hdr_number" and "paid_date".
B) Partition on "account" and "hdr_number" for all joins. Change Join_1 to join on "account", "hdr_number" and "po_date". Add Add $APT_SORTJNSERTION_CHECK_ONLY to job parameter list and set it to "True".
C) Partition on account and hdr_numberfor all joins. Change Join_1 to join on "account", "hdr_number" and "po_date". Insert Sort between Join_1 and Join_2 and subsort ("Don't sort previously sorted") on "account".
D) Partition on account and hdrnumber for all joins. Change Join_1 to join on "account", "hdrnumber" and "po_date". Insert Sort between Join_1 and Join_2 and subsort ("Don't sort previously sorted") on "account" and "hdr_number" and sort on "paid_date".

2. Which statement is true about buffering?

A) The buffer operator uses both memory and disk storage.
B) The framework uses /tmp by default for buffering on Unix systems.
C) The "buffer" scratch disk pool needs to be defined to allow the framework to perform data buffering.
D) In a clustered environment, using a disk space on an NFS mount for buffering improves performance.

3. Where are project level message handlers defined?

A) DSENV
B) Administrator Client
C) Designer Client
D) Director Client

4. When you configure a domain for source code integration a source control workspace is created. What are two reasons for the source control workspace? (Choose two.)

A) default directory for istool exports.
B) local transfer area for assets being submitted to the source control system
C) directory for deployment package files
D) provides a place to store the archive created by IS source code control integration

5. What two data sources support direct lookups? (Select two)

A) Oracle
B) DB2
C) SqIServer
D) Teradata
E) ODBC

Solutions: