OMG OMG Certifications OMG-OCSMP-MBA400 Questions & Answers

• Question 51:

  Choose the correct answer

  A systems engineer is establishing a viewpoint whose purpose is to support performance analysis.

  Which combination of SysML diagram types would the engineer be most likely to choose for the viewpoint languages?

  A. sequence and state diagrams

  B. parametric and activity diagrams

  C. use case and requirements diagrams

  D. block definition and package diagrams

  Correct Answer: B

  Parametric and activity diagrams are suitable for performance analysis because they can capture the quantitative aspects of a system, such as parameters, constraints, equations, values, units, flows and rates. Sequence and state diagrams are more focused on the temporal and behavioral aspects of a system, such as interactions, events and states. Use case and requirements diagrams are more focused on the functional and non-functional aspects of a system, such as actors, scenarios and goals. Block definition and package diagrams are more focused on the structural and organizational aspects of a system, such as blocks, parts, ports, connectors and packages. References: OMG-Certified Systems Modeling Professional - Model Builder ?Advanced (OCUP2-ADV) Examination Guide Version 1.0, Section 4.4.1

• Question 52:

  Choose the correct answer

  What is the purpose of the Domain Metamodel in UPDM?

  A. It defines the implementation metamodel.

  B. It defines the stakeholder requirements for the metamodel.

  C. It defines the mapping of UML to SysML and SOAML concepts

  D. It defines the melamodel concepts and relationships without any implementation

  Correct Answer: D

  The purpose of the Domain Metamodel in UPDM is to define the metamodel concepts and relationships without any implementation. The Domain Metamodel captures the core concepts of DoDAF and MODAF in terms of entities, attributes, associations, and constraints. It does not specify how these concepts are implemented in UML, SysML, or any other language or tool. The Domain Metamodel serves as a requirements model for UPDM and provides traceability links between the domain concepts and the profile elements.

• Question 53:

  Choose the correct answer.

  A modeling team supervisor wishes to force modelers to use particular metamodeling features

  What must the supervisor do?

  A. place the profile in the current namespace with the model

  B. apply the profile to the model

  C. Apply the profile to the model with the {strict} keyword applied

  D. Apply the profile to the model with the {required} keyword applied

  E.玦mport?the profile to the model with the {strict} keyword applied

  F.玦mport?the profile to the model with the {required} keyword applied

  Correct Answer: C

  To force modelers to use particular metamodeling features, the supervisor must Apply the profile to the model with the {strict} keyword applied. This keyword indicates that only elements with stereotypes defined in the profile can be created as instances of the extended metaclasses. For example, if a profile defines a stereotype <> as an extension of Class, then only classes with this stereotype can be created as instances of Class when the profile is applied with the {strict} keyword. References: 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 54:

  Choose the correct answer

  If a systems modeling tool conforms to the XMI specification and includes the XMI representation of the UML Profile for SysML and the XMI representations of Model Libraries defined by SysML. what does the tool provide?

  A. the import and export of only SysML diagrams from one tool to another

  B. the import and export of only SysML model data from one tool to another

  C. the import and export of both SysML diagrams and model data from one tool to another

  D. the ability to perform model checking to verify model conformance

  Correct Answer: C

  If a systems modeling tool conforms to the XMI specification and includes the XMI representation of the UML Profile for SysML and the XMI representations of Model Libraries defined by SysML, the tool provides the import and export of both SysML diagrams and model data from one tool to another. XMI (XML Metadata Interchange) is a format specification that enables the interchange of objects and models through an XML formatted file. It is based on a metamodel that defines the abstract syntax and semantics of the model elements. By conforming to the XMI specification, a tool can serialize and deserialize SysML models in terms of XML elements and attributes. The tool can also include the XMI representation of the UML Profile for SysML, which defines the mapping of SysML concepts to UML concepts, and the XMI representations of Model Libraries defined by SysML, which provide predefined types and units for SysML models. This way, the tool can import and export both SysML diagrams and model data from one tool to another, ensuring consistency and interoperability. References: https://www.omg.org/ocsmp/ocsmp- adv-exam.htm https://www.omg.org/spec/XMI/2.5.1/About-XMI/

• Question 55:

  Choose the correct answer

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

  A. SysML requires the definition of a profile

  B. A profile adds methodology- and domain-specific concepts to SysML.

  C. A profile adds user-specific needs to the model in a systems engineering project

  D. A profile overwrites unwanted SysML concepts and tool-vendor-specific extensions

  Correct 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.

• Question 56:

  Choose the correct answer

  Which kinds of model elements ate used to populate the typical stakeholder views of a design?

  A. primarily behavior elements, such as activity, state and sequence diagrams

  B. primarily structural elements, such as block definition and internal block diagrams

  C. both behavioral and structural diagrams

  D. primarily use case and requirements diagrams

  Correct Answer: C

  The typical stakeholder views of a design are composed of both behavioral and structural diagrams, depending on the purpose and perspective of the view. Behavioral diagrams show how the system or part behaves or interacts in different scenarios or states, such as activity, state and sequence diagrams. Structural diagrams show how the system or part is composed of parts, ports, connectors and properties, such as block definition and internal block diagrams. Both types of diagrams are important to convey the functionality and architecture of the system or part to different stakeholders. Use case and requirements diagrams are not sufficient to populate the stakeholder views of a design, as they only capture the functional and non-functional aspects of the system or part. References: OMG- Certified Systems Modeling Professional - Model Builder ?Advanced (OCUP2-ADV) Examination Guide Version 1.0, Section 4.4

• Question 57:

  Choose the correct answer

  What is the forward temporal order of these development stages?

  1. needs analysis

  2. system acceptance

  3. system design

  4. trade study

  A. needs analysis, system acceptance, system design, trade study

  B. needs analysis, system design, system acceptance, trade study

  C. needs analysis, system design, trade study, system acceptance

  D. needs analysis, trade study, system design, system acceptance

  E. trade study, needs analysis, system design system acceptance

  Correct Answer: C

  The forward temporal order of these development stages is based on the typical sequence of activities in a system engineering process. Needs analysis is the first stage, where the problem and the stakeholder needs are defined. System design is the second stage, where the system architecture and requirements are developed. Trade study is the third stage, where alternative solutions are evaluated and compared based on various criteria. System acceptance is the final stage, where the system is verified, validated, and delivered to the customer.

• Question 58:

  Choose the correct answer

  Which option is a measure of model quality?

  A. the number of blocks that have been implemented

  B. the estimated time to complete the use case model

  C. the number of textual requirements approved by the customer

  D. the number of actions and activities with no incoming object 01 control flows

  Correct Answer: D

  A measure of model quality is a metric that evaluates how well a model satisfies some desired characteristics, such as correctness, completeness, consistency, clarity, etc. The number of actions and activities with no incoming object or control flows is a measure of model quality that indicates how well the model captures the dependencies and sequences of events in the system. A high number of such actions and activities may imply that the model is incomplete or inconsistent, and may lead to errors or ambiguities in the system behavior.

• Question 59:

  Choose the correct answer

  What is the key distinction between SysML modeling and MOF modeling?

  A. MOF models are used for domain-independent modeling SysML models are used for domain-specific modeling.

  B. MOF models are intended to be models of modeling constructs SysML models represent real world entities and processes.

  C. MOF models are intended to be strictly models of abstract entities SysML models represent real world entities and processes

  D. They both have the same purpose except that MOF modeling is intended for specialized and advanced usage by systems architects

  Correct Answer: B

  MOF stands for Meta-Object Facility, which is a standard for defining metamodels. Metamodels are models of modeling constructs, such as classes, attributes, associations, etc. SysML stands for Systems Modeling Language, which is a standard for modeling complex systems using diagrams and textual notations. SysML models represent real world entities and processes, such as components, behaviors, requirements, etc. The key distinction between SysML modeling and MOF modeling is that SysML models are instances of a metamodel defined by MOF. References: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://www.omg.org/mof/https://www.omg.org/sysml/

• Question 60:

  Choose the correct answer.

  A modeling team supervisor has defined a stereotype of block named *projectBlock?and wants to prevent any use of an unstereotyped block

  What must the supervisor do?.

  A. delete 玝lock?from the profile

  B. give * blocks the (abstract) keyword in the profile

  C. mark the extending stereotype with the {strict} keyword

  D. mark the extending stereotype with the {required} keyword

  E. attach a note to 玝lock?in the profile forbidding its use

  Correct Answer: C

  To prevent any use of an unstereotyped block, the supervisor must mark the extending stereotype with the {strict} keyword. This keyword indicates that only elements with this stereotype can be created as instances of the extended metaclass. In this case, only blocks with the stereotype <> can be created as instances of Block.