Pegasystems Certified Lead System Architect (CLSA) 6.2V2 Sample Questions:

1. Consider the following situation:
A PRPC application is running within a 1.2 GB JVM (Java Virtual Machine). There is approximatively 400 MB of free memory and garbage collector reclaims in average 32 MB of memory in the course of an hour.
The application is generating approximately 30 database alerts per minute. The database CPU runs at an average of 76% peaking periodically at 97%. The alert log file does not report any byte warning with a 10 MB threshold defined.
The Rules Assembly count is 0 when a typical interaction executes in average 74.6 rules. The application CPU peaks periodically at 20% but otherwise runs in average around 12%.
Users are complaining about poor performance. Their interactions take in average 4.15 seconds.
Which of the following approaches is most appropriate to resolve this issue? (Choose One)

A) Review the application profile log to determine which activities are taking the most time
B) Limit the number of database interactions by storing most data on a series of declare pages
C) Avoid retrieving the BLOB column during database interactions
D) Reconsider the database table indexes by reviewing query plans
E) Reduce the number of loop iterations executing on the large sets of data

2. The screenshot below shows a declare expression that is intended to determine the number of expense items with a category of "Hardware". The expression's change tracking tab can be seen below.

The expression appears to work correctly most of the time, however, users complain that at some points in the process the value of CountOfHardwareItems is incorrect. Which of the following is the most likely explanation for this issue? (Choose One)

A) The issue is likely caused by developer error in the flow definition
B) The issue is likely caused by the fact that .Category is referenced as a string and not a property reference and thus changes to .Category will not fire the expression
C) The issue is likely caused by the rule using a utility function as utility functions cannot be used with the "whenever inputs change" option
D) The issue is likely caused by using the wrong context execution behavior as any expression that references a page list should use the "regardless of any page it is contained in" options

3. Review the following classes and properties:
MyCo-Data-Shape.Area .Color
MyCo-Data-Shape-Rectangle .Length .Width
MyCo-Data-Shape-Circle .Radius
A page list property is defined at the class group MyCo-FW-ShapeApp-Work. The property name is .Shapes and it is defined as being a Page List of class MyCo-Data-Shape-
Which of the following statements are correct? (Choose Two)

A) At runtime pages of .Shapes can be of either MyCo-Data-Shape-Rectangle or MyCo-Data-Shape-Circle but all pages must be the same
B) At design time an architect can create a rule in MyCo-Data-Shape-Circle only if the rule exists in MyCo-Data-Shape-
C) At design time PRPC will provide a warning as it is not a good practice to define a page list with an abstract class
D) At runtime .Shapes(1) could be of class MyCo-Data-Shape-Rectangle while .Shapes(2) is of class MyCo-Data-Shape-Circle
E) At design time an architect can create a rule in MyCo-Data-Shape-Circle regardless of if the rule exists in MyCo-Data-Shape-

4. Which of the following tools are useful in identifying the slowest running DB query? (Choose Two)

A) Activity Profiler
B) Alert Log files
C) Tracer tool
D) Run Explain Plan
E) Performance Analyzer

5. What are the primary benefits of using Connect Java as compared to a Rule-Utility-Function? (Choose Two)

A) Connect Java performs better as it is pre-compiled
B) Connect Java allows you to access the full HttpServletRequest object whereas utility functions do not
C) Connect Java allows you to reference all Java classes whereas utility functions can only reference PRPC Java APIs
D) You can easily execute a Connect-Java rule in parallel to the primary flow processing
E) Time spent in a Connect-Java call will be reported by PAL and other performance tools as connectors

Solutions: