OMG OMG Certifications OMG-OCSMP-MBA400 Questions & Answers

• Question 71:

  Choose the correct answer

  Which data exchange mechanism uses a database that is accessible by two or more tools m order to share data?

  A. manual exchange

  B. file-based exchange

  C. interaction-based exchange

  D. repository-based exchange

  Correct Answer: D

  This type of data exchange mechanism uses a database that is accessible by two or more tools in order to share data. A repository-based exchange is a way of exchanging data between tools that have direct integration or compatibility. It requires the tools to access a common database that stores the data in a standardized format, such as XMI, AP233, etc. A repository-based exchange can be useful for transferring data in real- time or for performing collaborative operations. However, it can also have some drawbacks, such as security, scalability, orperformance issues.

• Question 72:

  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. timing constraints for all behaviors involved in responding to a critical input

  B. (1) liming constraints for all behaviors involved in responding to a critical input (2) total system production cost provided by the customer

  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. (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

  Correct Answer: E

  The information in option E is necessary and sufficient for the engineering team to begin selecting and procuring COTS components for the embedded real-time control system. This information defines the timing and cost requirements and constraints for the system and its components, which are essential for evaluating and comparing the available COTS components. The other options are either incomplete or irrelevant for this purpose. For example, option A does not include the minimum period of time between critical inputs, the maximum number of critical inputs, or the cost information. Option B does not include the minimum period of time between critical inputs or the maximum number of critical inputs. Option C does not include the maximum number of critical inputs or the allocation of cost to system components. Option D does not include the maximum number of critical inputs.

• Question 73:

  Choose the correct answer-.

  Which technique allows a user to objectively determine the best means of implementing a particular (unction?

  A. a trade study

  B. an objective analysis

  C. operational research

  D. a requirements analysts

  Correct Answer: A

  A trade study is a method for making a decision between competing alternatives based on a set of criteria, such as cost, performance, reliability, etc. A trade study allows a user to objectively determine the best means of implementing a particular function by evaluating and comparing the pros and cons of each alternative. A trade study can also help identify trade-offs and risks associated with each alternative

• Question 74:

  Choose the correct answer.

  Given the following diagram fragment:

  

  Which criterion indicates that a decision node construct such as this is well-formed?

  A. No activity Ai will negate the corresponding guard [gi]

  B. Taken together, the guards cover all possibilities and are mutually exclusive.

  C. Each guard legal can be evaluated without changing the state of any item referenced by the corresponding activity or action Ai

  D. The guards are understandable by stakeholders in the development effort.

  Correct Answer: B

  A decision node is a construct in SysML that represents a branching point in an activity diagram where alternative paths are chosen based on some conditions. The guards are expressions that specify the conditions for each outgoing edge from the decision node. A criterion that indicates that a decision node construct is well-formed is that the guards cover all possibilities and are mutually exclusive, meaning that for any input value, exactly one guard evaluates to true and all others evaluate to false. This ensures that there is no ambiguity or conflict in choosing the next path in the activity.

• Question 75:

  Choose the correct answer.

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

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  E. Option E

  Correct 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 <> 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.

• Question 76:

  Choose the correct answer.

  A project is evaluating several modeling tools which comply in vanous degrees to SysML abstract and concrete syntax The customer will allow some deviation from full compliance, as long as technical risk is minimized.

  Which tool characteristics are required for this project?

  A. full compliance with abstract syntax, and limited deviations from concrete syntax

  B. full compliance with concrete syntax, and limited deviations from abstract syntax

  C. limited deviations from abstract and concrete syntax

  D. full compliance with both abstract and concrete syntax, nothing less is adequate

  Correct Answer: A

  This tool characteristic is required for this project because it ensures that the modeling tool follows the SysML abstract syntax, which defines the metamodel elements and their semantics. The abstract syntax is essential for ensuring consistency and interoperability between different tools and models. The concrete syntax, which defines the notation and presentation of the elements, can have some deviations as long as they do not affect the meaning or interpretation of the model. For example, a tool can use different colors or shapes for some elements without changing their semantics.

• Question 77:

  Choose the correct answer.

  Which versions of the various Architectural Frameworks does UPDM 1.0 officially support?

  A. DoDAF 1 0 and MODAF 1.2

  B. DoDAF 1.5, MODAF 1.2. and NAF 3.0

  C. DoDAF 1 5 and 2.0, and MODAF 1.2

  D. DoDAF 1 5 and MODAF 1.2

  Correct Answer: C

  The versions of the various Architectural Frameworks that UPDM 1.0 officially supports are DoDAF 1.5 and 2.0, and MODAF 1.2. UPDM 1.0 provides two sets of profiles: one for DoDAF 1.5 and MODAF 1.2 based on the UPDM 1.1 metamodel, and another for DoDAF 2.0 based on the same metamodel. UPDM 1.0 does not support NAF (NATO Architecture Framework), which is another architectural framework used in the defense domain.

• Question 78:

  Choose the correct answer

  The concerns of a group of stakeholders involved m a systems development project have been identified. What is the next project task to be earned out?

  A. Define a set of viewpoints and align them with concerns

  B. Define a set of viewpoints and align them with stakeholders

  C. Group together similar stakeholders and assign them to viewpoints

  D. Group concerns to identify stakeholders that are interested in the same viewpoint.

  Correct Answer: A

  The next project task to be carried out after identifying the concerns of a group of stakeholders involved in a systems development project is to define a set of viewpoints and align them with concerns. A viewpoint defines how a view should be constructed and used to address a set of stakeholder concerns. By defining and aligning viewpoints with concerns, the project can ensure that each concern is covered by at least one viewpoint, and that each viewpoint addresses one or more concerns.

• Question 79:

  Choose the correct answer

  Which statement is true regarding a typical model-based systems engineering methodology?

  A. The activities in a typical systems engineering methodology are applied iteratively

  B. The activities in a typical systems engineering methodology are applied sequentially.

  C. The activities in a typical systems engineering methodology can be performed in any order

  D. The activities in u typical systems engineering methodology work just as well for specialty engineering activities

  Correct Answer: A

  A systems engineering methodology is a collection of related processes, methods, and tools that support the discipline of systems engineering in a specific context. The activities in a typical systems engineering methodology are applied iteratively, meaning that they are repeated and refined until a satisfactory solution is achieved. The activities are not applied sequentially, meaning that they are not performed in a fixed order without revisiting previous steps. The activities cannot be performed in any order, because they have logical dependencies and prerequisites. The activities do not work just as well for specialty engineering activities, because they may require different processes, methods, and tools

• Question 80:

  Choose the correct answer

  A large company uses SysML to design energy systems, and plans to use a specialized proprietary analysis tool (X) for evaluating and comparing the cost, performance, and reliability of energy system alternatives The engineers at the

  company want to automatically create analysis models in X from design models in SysML.

  The achieve this, they will use the following process:

  (1)

  Specify the appropriate module in X10 be used for each block m the SysML design model.

  (2)

  Write scripts that use these mappings to automatically create analysis models in X Which approach is most flexible when enabling this automation?

  A.

  define a package that contains a note for each type of module in X. and anchor notes to the blocks in the design model

  B.

  define a profile that contains a stereotype for each type of module m X. and assign the stereotype to the blocks in lite design model

  C.

  define a profile that contains a tag for each type of X in the tool, and assign the stereotype to the blocks in the design model

  D.

  define a profile that contains a stereotype with a tag that can store the name of the module in X. apply the stereotype to the blocks in the design model, and populate the tag

  E.

  define a package that contains a block for each type of module m X (e g module_1 block) and create a dependency relationship from the module block to the blocks in the design model

  Correct Answer: D

  A profile is a mechanism for customizing SysML for a specific domain or purpose. A stereotype is a way of extending or modifying the semantics of a SysML element. A tag is an attribute of a stereotype that can store additional information. By defining a profile that contains a stereotype with a tag that can store the name of the module in X, the engineers can easily map the blocks in the design model to the corresponding modules in X, and use scripts to automate the creation of analysis models. This approach is more flexible than using notes, dependencies, or predefined tags, because it allows for more control and consistency over the mapping proces