OMG-OCSMP-MBA400 Exam Questions Instant Access

Question 1

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What is a common reason for extending SysML with a profile?

ASysML requires the definition of a profile

BA profile adds methodology- and domain-specific concepts to SysML.

CA profile adds user-specific needs to the model in a systems engineering project

DA profile overwrites unwanted SysML concepts and tool-vendor-specific extensions

Answer : B

A profile is a mechanism for extending SysML with additional modeling elements that are not part of the standard language. A profile can add methodology- and domain-specific concepts to SysML, such as stereotypes, tagged values, constraints, etc. These concepts can be used to tailor SysML to specific engineering domains or modeling methods. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.ibm.com/docs/SSB2MU_8.2.0/com.ibm.rhp.sysml.doc/topics/rhp_c_dm_sysml_profile_features.html

Question 2

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A control unit aboard a ship sends commands to a remote-controlled submarine. which in turn sends messages to the ship after completing each major stage of its overall mission. For each distinct stage, the ship orders the submarine to perform a different set of operations. Completing any given stage takes a widely variable amount of time

Why it is appropriate to use the MARTE profile to model this system with SysML?

AThe control unit is an embedded system, which the MARTE profile makes it possible to model in SysML

BThe stage transitions of the mission equate to a logical dock, a temporal construct that MARTE brings to SysML

CThe stage transitions of the mission equate to a chronometric clock a temporal construct that MARTE brings to SysML

DThe control unit must order the submarine's operations in real time, which the MARTE profile makes it possible to model in SysML.

Answer : D

It is appropriate to use the MARTE profile to model this system with SysML because the control unit must order the submarine's operations in real time, which the MARTE profile makes it possible to model in SysML. MARTE is a UML profile that provides concepts and annotations for modeling and analyzing real-time and embedded systems. It supports modeling time-related properties and constraints, such as deadlines, periods, durations, clocks, etc., as well as resource-related properties and constraints, such as memory, CPU, power, etc. By using MARTE, one can capture the real-time requirements and behavior of the system and perform schedulability and performance analysis. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.omg.org/spec/MARTE/1.2/About-MARTE/

Question 3

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For a system with stringent real-time requirements and power-consumption constraints, which concern would lead the designer to employ the MARTE profile?

Aensuring traceability between structure and behavior

Bensuring traceability between requirements and structure

Censuring that the structure could be precisely modeled and that analysis was supported

Densuring that the relationship between system response time and power consumption could be captured in a parametric diagram

Answer : A

For a system with stringent real-time requirements and power-consumption constraints, the concern that would lead the designer to employ the MARTE profile is ensuring that the structure could be precisely modeled and that analysis was supported. MARTE provides concepts and annotations for modeling the structure of real-time and embedded systems in terms of components, ports, connectors, flows, etc., as well as for modeling their behavior in terms of state machines, activities, etc. MARTE also provides concepts and annotations for performing analysis of system properties, such as schedulability, performance, power consumption, etc., using various methods and tools. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.omg.org/spec/MARTE/1.2/About-MARTE/

Question 4

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The lead systems engineer on a project has identified a set of Key Performance Parameters (KPPs) that need to be evaluated both on a periodic basis during development, and during acceptance for every design change. Many of these KPPs are expressed In complex, interrelated differential equations The analysis team has identified appropriate numerical techniques for solving these equations and expressed them in a popular analysis tool.

The lead system modeler and methodologist must ensure that the architecture and design captured in the SysML system model are continuously and accurately reflected In the KPP calculations.

Which strategy is likely to be most successful in accomplishing this?

ATask the analysis learn with recasting each of the KPP equations as constraint blocks and parametric models directly in SysML and linking the resulting parameters to value properties of current system model elements Keeping all information in the same model is the only way to guarantee the consistency the lead engineer has asked for

BList the parameters used to evaluate the KPPs in a spreadsheet file. Use the SysML modeling tool's inherent capability to link appropriate value properties to cells in this spreadsheet Task the analysis team with modifying their analysis routines to accept parameters as an input vector from this spreadsheet. Ensure that the spreadsheet is updated from the system model prior to each update of the KPP calculations

CWork with the analysis team to partition the KPP evaluation model into manageable, reusable subroutines Develop constraint blocks within the SysML model to represent these subroutines, exposing their parameters. Use these new constraint blocks to build a parametric model that ties the KPP evaluation directly to system model element value properties. Leverage available bridging software to link this parametric model to the evaluation subroutines executing in the external analysis tool, and re-evaluate the KPPs on an as-needed basis

DUse activity and/or state models to accurately model the flow of data to numerically solve the KPP evaluation equations Ensure that the analysis team validates these behavior models Bind each relevant value property within the system model to an activity parameter or state variable such that the KPP evaluation model accurately reflects how the KPPs are derived. Next, use code generation capability inherent in the SysML tool to generate and compile the KPP evaluation routines Recompile and run these routines as needed to update KPP estimates

Answer : B

Question 5

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What does a model library add to a SysML model?

Astereotypes

Bcommon concepts

Cdomain-specific modeling concepts

Dmethodology-specific modeling concepts

Answer : B

A model library is a package that contains reusable model elements that can be imported into other models. A model library can add common concepts to a SysML model, such as units, quantities, value types, etc. These concepts can be used to define properties and parameters of blocks and constraints in a consistent and standardized way. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.omg.org/spec/SysML/1.6/PDF

Question 6

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Which diagram fragment correctly a SysML Block extending a basic UM Class?

AOption A

BOption B

COption C

DOption D

Answer : B

The diagram fragment that correctly shows a SysML Block extending a basic UML Class is Option B. This option shows a Block with the stereotype <<block>> applied to it. This stereotype indicates that the Block is an extension of the Class metaclass. The Block inherits all the features of the Class, such as attributes, operations, associations, etc., and adds additional features specific to SysML, such as ports, flows, values, constraints, etc. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://sysml.org/sysml-faq/what-is-block-definition-diagram.html

Question 7

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An engineer has defined a profile, SE2Profile, for the APE model. Another model, E-ELT, requires the same profile.

What is the best way to share the profile?

AOption A

BOption B

COption C

DOption D

Answer : B

The best way to share the profile is to define it as a model library and import it into the other model. A model library is a package with the stereotype <<modelLibrary>> applied to it. It contains reusable model elements that can be imported into other models by using an import relationship. Option B shows this approach. Reference: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.omg.org/spec/SysML/1.6/PDF

OMG-Certified Systems Modeling Professional - Model Builder - Advanced OMG-OCSMP-MBA400 Exam Questions