[FREE] Uml Exam Questions And Answers
To answer the question, "What is a use case diagram? Both beginners and intermediate UML diagrammers will find all the necessary training and examples on Some people don't know what use case is, while the I hope you will find the answer when...
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How can I represent that with Use Case Diagrams? Representing failure and branching conditions is often best done with a Sequence Diagram or flow chart, but there are some grey-area cases when it This is a great answer because Use Case Diagrams have little information. They're akin to a table of contents of a book. The details are in the What I do is to use classes with actor, usecases etc.. UML - Domain Model. UML - Class Diagram. The use case specification includes the individual use cases, defining several details for each of them. First of all, we're going to describe the details, and then we'll create a part of the specification of our Use Case UML offers many diagram types, and sometimes two diagrams can explain the same thing using different notations.
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Check out this blog post to learn which UML diagram best suits you. Use cases are a means of communicating with users and other stakeholders what the system is intended to do. A use case diagram shows the interaction between the system and entities external to the system. Activity diagram for brainstorming sessions. Note that UML diagrams don't necessarily have to document People typically adopt use case for requirement capturing, while you might use activity diagram to elaborate a use case I Related Questions.
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More Answers Below. Due to the simplicity of use case diagrams, and more importantly, because they are shorn of all technical jargon, use case diagrams are a great storyboard tool for user meetings. Modern Analyst Use case diagrams were contributed to the Unified Modeling Language UML by Ivar Jacobson, who had devised them as part of his Objectory software development method for documenting user requirements. Use case diagrams model the functionality of a system using actors and use cases.
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They provide a good high level analysis from outside the system. Use case diagrams specify how the system interacts with actors without worrying An association exists whenever an actor is UML interview questions. The most frequently used modeling diagrams are 9 in number. These are as: Use case diagram.
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Question Answer : Object: A single thing or concept, either in a model of an application domain or in a software system that can be represented as an encapsulation of state, behavior and identity, a member of a class that defines a set of similar objects. Class: A class is a descriptor for a collection of objects that are logically similar in terms of their behavior and the structure of their data. Instance: A single object, usually called an instance in the context of its membership of a particular class or type. What Is Generalization And Specialization? Answer : Generalization: Generalization is the abstraction of common feature among elements by the creation of a hierarchy of more general elements that encapsulate common features.
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A cat, a dog — both are consistent with mammal class. Specialization: The other face of generalization is specialization. A class is said to be specialized when it has a set of characteristics that uniquely distinguish it from its super class. For example, a cat is a mammal but it is more specialized Question What Is Inheritance In Oosad? Answer : The mechanism by which object-oriented programming languages implement a relationship of generalization and specialization between classes is called inheritance. When we extend a class from an existing class — the existing class is the superclass and the extended class is subclass.
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By the rules of inheritance the subclass inherits all the features from its superclass. What Is Polymorphism In Oosad? Answer : The ability of different methods to implement the same operation, and thus to respond same messages in different ways that are appropriate to their class is called polymorphism. What Is Message-passing? Answer : It is a metaphor for the way that objects interact in object-oriented system by sending each other messages that request services or supply information. In a system, several objects may collaborate to fulfil an action. These objects communicate by sending each other message. Since objects interact only through messages they exchange, their internal detail can remain hidden from each other.
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What Is An Operation Signature? Polymorphically redefined operations have the same signature. Answer : Subclass: a specialized class that acquires general features from its ancestor super-classes in a generalization hierarchy, but that also adds one or more specialized characteristics of its own. Superclass: a generalized class that is an abstraction of the common characteristics of its subclasses in a generalization hierarchy.
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NA Success Scenarios 1. Opens page of a selected room in that other user names and their messages can be seen. Use case diagrams are good to show relationship between use case and they also provide high over view. The table explanation of a use case talks details about the use case. So when a developer or a user is reading a requirement document, he can get an overview by looking at the diagram if he is interested he can read the use case tables for more details.
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The below use case represents a system which is used to maintain customer. When a customer is added successfully it should send an email to the admin saying that a new customer is added. Only admin have rights to modify the customer. First lets define extend and include and then see how the same fits in this use case scenario. Include: Include relationship represents an invocation of one use case by the other. If you think from the coding perspective its like one function been called by the other function.
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Extend: This relationship signifies that the extending use case will work exactly like the base use case only that some new steps will inserted in the extended use case. One of the requirements of the project was that when we add a customer, the system should send an email. This also helps us defining a technical road map regarding relationships between simple and admin user. I Can you explain class diagrams? Class diagram Class is basically a prototype which helps us create objects. Class defines the static structure of the project. A class represents family of an object. By using Class we can create uniform objects. In the below figure you can see how the class diagram looks. Basically there are three important sections which are numbered as shown in the below. Attributes: This is the second section or the middle section of the class which represents the properties of the system.
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Methods: This section carries operation or method to act on the attributes. Figure: Three sections of the class Now in the next section we will have a look on Association relationship between these classes. B How do we represent private, public and protected in class diagrams? Protected properties can only be seen within the component and not outside the component. Figure: Private, public and protected I what does associations in a class diagram mean? Associations in Class diagrams A single Class cannot represent the whole module in a project so we need one or more classes to represent a module.
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So by grouping and relating between the classes we create module and these are termed as Association. In order to associate them we need to draw the arrowed lines between the classes as shown in the below figure. The left to right marked arrow basically shows the flow that order class uses the payment class. In case payment class using the order class then the marked arrow should be right to left showing the direction of the flow. Figure:- Order is paid by Payments class There are four signs showing the flow:- Figure: Direction signs in UML Multiplicity Multiplicity can be termed as classes having multiple associations or one class can be linked to instances of many other classes. If you look at the right hand side the 1….
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Now towards left hand side we have 0…. In order to represent multiplicity of classes we have to show notations like 1…. Figure: Multiplicity in Classes I Can you explain aggregation and composition in class diagrams? Aggregation Association signifies that the whole object can exist without the Aggregated Object. For example in the below figure we have three classes university class, department class and the Professor Class. The university cannot exist without department which means that university will be closed as the department is closed. In other words lifetime of the university depend on the lifetime of department.
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In the same figure we have defined second Association between the department and the Professor. In this case, if the professor leaves the department still the department continues in other words department is not dependent on the professor this is called as Composition Association. Note: The filled diamond represents the aggregation and the empty diamond represents the composition. You can see the figure below for more details. Figure: Aggregation and composition in action A What are composite structure diagram and reflexive association in class diagrams? Composite structure diagram When we try to show Aggregation and Composition in a complete project the diagram becomes very complicated so in order to keep it simple we can use Composite structure diagram. In the below figure we have shown two diagrams one is normal diagram other is Composite structure diagram and the simplicity can easily be identified.
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In the composite diagram the aggregated classes are self contained in the main class which makes it simpler to read. Figure: Composite Structure diagram Reflexive associations In many scenarios you need to show that two instances of the same class are associated with each other and this scenario is termed as Reflexive Association. For instance in the below figure shows Reflexive Association in the real project. Here you can see customer class has multiple address class and addresses can be a Head office, corporate office or Regional office. One of the address objects is Head office and we have linked the address object to show Reflexive Association relationship.
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This is the way we can read the diagram Regional address object is blocked by zero or one instance of Head office object. Figure: Reflexive association I Can you explain business entity and service class? Business entity objects represent persistent information like tables of a database. Just making my point clearer they just represent data and do not have business validations as such. With this approach we have separated the data from the behavior. The service represents the behavior while the business entity represents the persistent data. Figure:-Business entity and service I Can you explain System entity and service class? System entity class represents persistent information which is related to the system.
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System service class come in two flavors one is it acts like a wrapper in the system entity class to represent behavior for the persistent system entity data. Figure: System entity and service class The other flavor of the system service class is to operate on non-persistent information. The first flavor operated on persistent information. All these information are non-persistent. By separating the logic of non-persistent data in to a system service class we bring high reusability in the project. Figure: Non-persistent information Note: The above question can be asked in interview from the perspective of how you have separated the behavior from the data. B Can you explain generalization and specialization? Generalization and Specialization In Generalization and Specialization we define the parent-child relationship between the classes. In many instance you will see some of the classes have same properties and operation these classes are called super class and later you can inherit from super class and make sub classes which have their own custom properties.
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In the below figure there are three classes to show Generalization and Specialization relationship. All phone types have phone number as a generalized property but depending upon landline or mobile you can have wired or simcard connectivity as specialized property. In this diagram the clsphone represent Generalization whereas clslandline and clsmobile represents specialization. Figure: Abstract classes in action.
35 UML Interview Questions and Answers - Freshers, Experienced
Select a quiz, set the number of questions you want to play and you're ready to begin! Programs and Notes for MCA. What are the advantages of creating a model? To aid grading and to prevent you from getting too far off track, when you complete an answer for one What does a simple name in UML Class and objects consist of? Examination Management System UML component diagram, … uml diagram questions answers multiple choice pdf download.
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Make sure your diagram captures all users and uses of an exam. Skip to content. Generally, simple Venn diagram questions asked in the exams. Some clumsy approaches to model try-catch blocks are by utilizing combined fragments - alt alternatives and breaks, while adding stereotypes for reply messages representing thrown exceptions. UML objective questions and answers pdf download free.. Use Case: A use case is a use case diagram of UML represents a business functionality that is distinct. These selected questions and answers are prepared from Object Oriented Analysis and Design Exam point of view and will also help in quick revision to get good marks in Object Oriented Analysis and Design Examination. You will get 1 point for each correct answer. Design class for given UML Diagram.
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Masters in Computer Applications. Read Book Uml Diagrams Multiple Choice Questions With Answersdiagrams multiple choice questions with answers and numerous ebook collections from fictions to scientific research in any way. UML provides neither notation to model exception handling in sequence diagrams nor any reasoning why it is absent. Which of these statements are truly acceptable? This is a Component diagram of Examination Management System which shows components, provided and required interfaces, ports, and relationships between the Courses, Papers, Marks, Exam and Faculties. When it comes to real-world applicability, my experience is that the two diagram types you mention are THE most used ones. But avoid … Asking for help, clarification, or responding to other answers. O a system sequence diagram O b activity diagram O c use case diagram Question 10 In UML deployment diagrams indicate all correct answers : a artifacts are represented as pyramids.
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Practice these MCQ questions and answers for preparation of various competitive and entrance exams. Object diagram gives a pictorial representation of class diagram at any point of time. Here, we have a set of multiple-choice questions and answers quiz on UML views and UML diagrams in software engineering. For any help, you can refer to the previous articles on the same topic. Venn diagram is an important topic for the point of view of the competitive exam.
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Provide details and share your research! Prepare an activity diagram for computing a restaurant bill. The following five quizzes help to test your knowledge about the class diagram, sequence diagram, state machine diagram, activity diagram and use case diagram. So, here are some important and simple venn diagram questions with their answers, so you can understand this topic very quickly by figures and shapes. Please be sure to answer the question.
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UML VIVA Questions and Answers,uml viva questions and answers pdf free download,viva questions on uml diagrams,uml interview questions with answers pdf. Making statements based on opinion; back them up with references or personal experience. Login; Help; Introduction. Search Amazon and read reviews! The standard is managed, and was created by, the Object Management Group. There are several proposed notations for exception handling. Starting with question 3 on this exam, each question builds on the answer from the previous question. Class diagram, Object diagram, Component Diagram, Deployment diagram. From the previous question you can easily judge that class diagrams shows the types and how they are linked. There should be a charge for each delivered item. UML Quiz. This Diagram includes the class name, attributes, and operation in separate designated compartments.
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Question Answer : Object: A single thing or concept, either in a model of an application domain or in a software system that can be represented as an encapsulation of state, behavior and identity, a member of a class that defines a set of similar objects. Class: A class is a descriptor for a collection of objects that are logically similar in terms of their behavior and the structure of their data.
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Instance: A single object, usually called an instance in the context of its membership of a particular class or type. What Is Generalization And Specialization? Answer : Generalization: Generalization is the abstraction of common feature among elements by the creation of a hierarchy of more general elements that encapsulate common features. A cat, a dog — both are consistent with mammal class. Specialization: The other face of generalization is specialization. A class is said to be specialized when it has a set of characteristics that uniquely distinguish it from its super class. For example, a cat is a mammal but it is more specialized Question What Is Inheritance In Oosad?
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Answer : The mechanism by which object-oriented programming languages implement a relationship of generalization and specialization between classes is called inheritance. When we extend a class from an existing class — the existing class is the superclass and the extended class is subclass. By the rules of inheritance the subclass inherits all the features from its superclass. What Is Polymorphism In Oosad? Answer : The ability of different methods to implement the same operation, and thus to respond same messages in different ways that are appropriate to their class is called polymorphism. What Is Message-passing? Answer : It is a metaphor for the way that objects interact in object-oriented system by sending each other messages that request services or supply information.
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In a system, several objects may collaborate to fulfil an action. These objects communicate by sending each other message. Since objects interact only through messages they exchange, their internal detail can remain hidden from each other. What Is An Operation Signature? Polymorphically redefined operations have the same signature. Answer : Subclass: a specialized class that acquires general features from its ancestor super-classes in a generalization hierarchy, but that also adds one or more specialized characteristics of its own.
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