OMG-Certified Systems Modeling Professional - Model Builder - Advanced Sample Questions:

1. Choose the correct answer.
An engineering learn has been charged to design and build an embedded real-time control system using COTS (Commercial Off-The-Shelf) purchased components where possible A technical risk for such a control system is that the system will miss (i.e . fail to respond to) critical inputs The project has the additional risk that there may not be any components on the market that will meet both timing and cost constraints Given this, what information must be in the model before the engineering team can begin selecting and procuring COTS components?

A) (1) liming constraints for all behaviors involved in responding to a critical input (2) total system production cost provided by the customer
B) (1) minimum period of time between any two successive critical inputs (2) maximum number of critical inputs that will arrive in a given time interval (3) maximum acceptable time to produce all outputs for a critical input (4) allocation of (3) to all behaviors involved in responding to a critical input (5) total system production cost provided by the customer (6) allocation of (5) to system components
C) (1) minimum period of time between any two successive critical inputs (2) maximum acceptable time to produce all outputs for a critical input (3) allocation of (2) to all behaviors involved in responding to a critical input (4) total system production cost provided by the customer
D) (1) minimum period of time between any two successive critical inputs (2) maximum acceptable time to produce ail outputs for a critical input (3) allocation of (2) to all behaviors involved in responding to a critical input (4) total system production cost provided by the customer (5) allocation of (4) to system components
E) timing constraints for all behaviors involved in responding to a critical input

2. Choose the correct answer
A systems engineer is responsible for deploying a model-based systems engineering approach on an unprecedented system, with unclear or incomplete user and system requirements.
What is the most important factor the engineer should consider in selecting a system development methodology?

A) the ability to rapidly explore required system functionality
B) access to a large model library and legacy code base
C) direct support for quickly characterizing and prototyping services
D) the ability to rapidly prototype the user interface
E) a robust ontology for characterizing complex systems

3. Choose the correct answer
Which SysML diagram type is a modification of the UML Class diagram?

A) Block Definition Diagram
B) Package Diagram
C) Parametric Diagram
D) Internal Block Diagram

4. Choose the correct answer
A company is executing a large distributed engineering project. More than a dozen engineers are contributing to the system model, working from different locations spread across three time zones The lead engineer has decided that it is essential to maintain a single model. The department director has expressed concern that the project may have trouble employing its engineers productively while still maintaining configuration control of this common model.
Which configuration management strategy is likely to be most successful*?

A) Use a configuration management tool to manage model elements. Allow packages to be checked out by any user for editing, which locks the elements therein contained Packages may be viewed in read-only mode by any user at any time All model users receive alerts when a package they are viewing has been modified and checked-in. and changes are highlighted Packages may not remain checked out overnight
B) Co-locate the modeling team Trying to maintain configuration of a model across a distributed team is extremely difficult and may not succeed
C) Use a centralized repository for the model files Allow only engineers in the eastern-most time zone to upload changes to the model files in the mornings, and the western engineers in the afternoons. Either can download and view the model files at any time. This will assure maximum productivity while minimizing the possibility of collisions
D) Use a configuration management tool to manage model elements. Assign ownership of model elements at the package level- Only the owner of a package may make changes to elements in that package Note that each relationship between model elements must be contained within a single package

5. Choose the correct answer
Modehca solvers can produce large volumes of time-based results (such as time-based power usage), but requirements are often based on scalar values such as "maximum peak power" and 'average power usage".
Which of the following is generally the most effective way to verify such requirements?

A) ave the Modelica solver also compute these scalar values from its time-based power usage results Then import the resulting scalar values into SysML. and compare them to the requirements.
B) Import the Modelica time-based power usage results into SysML Then use SysML parametncs to calculate these scalar values, and compare them to the requirements
C) Use the SysML4Modelica profile to transform the Modelica time-based power usage results into these scalar values Then import the resulting scalar values into SysML, and compare them to the requirements.
D) Modelica models can only produce time-based results and thus cannot support scalar results like these, which must either be calculated using a different tool or measured on physical prototypes Then enter the resulting scalar values into SysML, and compare them to the requirements

Solutions: