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IBM Assessment: IBM WebSphere Operational Decision Management V8.0, Application Development Sample Questions:

1. A company is running 20,000 rules in one ruleset and experiences latency during some ruleset executions. No hot deployments are used. After reviewing the execution traces, the application developer recognizes that the performance is affected by reparsing of the same ruleset after overnight inactivity. What should the application developer do to minimize the impact of ruleset parsing and speed up performance?

A) Make sure the cache is empty before the first ruleset is parsed.
B) In the ra.xml file, set the pool.maxSize parameter to make sure that the number of active rulesets is greater than the size of the XU connection pool.
C) Set the ruleset property ruleset.maxIdleTime to 0 to ensure the ruleset is not removed from cache.
D) In the ra.xml file, set the asynchronousRulesetParsing property to false to handle concurrent requests.

2. An application developer collects the following requirements from the business analyst for the case assignment system:
-There are 4 sets of rules to be executed in successive tasks: initialization, preprocess, check
workload and assign case. -The initialization rules should be divided into 5 subsets and orchestrated with 1 ruleflow. -The assign case rules should be divided into 6 subsets and orchestrated with 1 ruleflow.
How should the application developer create the ruleflows?

A) Create 4 ruleflows, set the main flow task property of the main ruleflow to the name of the decision service and for each other ruleflow set it to the label of relevant rule task.
B) Create 5 ruleflows, set the main flow task property of the main ruleflow to the name of the ruleset and for each other ruleflow set it to name of the ruleflow.
C) Create 3 ruleflows, set the main flow task property of the main ruleflow to true and set other ruleflows to false.
D) Create 2 ruleflows and set the main flow task property of each ruleflow to true.

3. Rule authors need to select a city from a drop-down list of more than 1000 cities when editing the condition statement of a rule within Decision Center. An application developer decides to customize the user experience so that the rule authors can search for a city in a popup window. How should the application developer do this?

A) Create a value provider and integrate it into Decision Center.
B) Create a value descriptor and integrate it into Decision Center.
C) Create a custom business rule language and publish it to Decision Center.
D) Create a value editor and integrate it into Decision Center.

4. A ruleset for validating the content of a message including cross-field validation and business range checking is ready to be integrated into an architecture with only a JVM container. The application must have the capability of providing to and removing from working memory any number of objects without resetting the rule session. Which execution approach should the application developer choose for this application integration?

A) Java SE with stateful rule session
B) POJO with stateful rule session
C) POJO with stateless rule session
D) Java SE with stateless rule session

5. A company implemented a report data validation system with business rules. As there is a large volume of data, the design team has decided to run validations in batch and parallel mode. The ruleset will be executed in Java SE and the maximum number of threads executing rules is 20). When an application developer tests the rule execution code, the following exception comes up: ilog.rules.res.session.IlrSessionException: An error occurred while the rule session was called: ilog.rules.res.xu.cmanager.impl.IlrLocalizedResourceAllocationException: Default connection manager pool is full, error code: GBRXU0200E ilog.rules.res.xu.pool.IlrPoolException: Pool of connections is full What should the application developer do to resolve the exception?

A) Set pool size of the Execution Unit (XU) connection factory in the application server to 20.
B) Set the ruleset property pool.maxSize to 20.
C) Configure the IlrSessionRequest class to set connection pool size to 20.
D) Edit the resource adapter descriptor file ra.xml to set the pool.maxSize property to 20.

Solutions: