This set of Software Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Unified Modelling Language”.
1. Object oriented analysis and design can be handled by the one who knows UML.
a) True
b) False
View Answer
Explanation: The Unified Modeling Language includes a set of graphic notation techniques to create visual models of object-oriented software-intensive systems.
2. At Conceptual level Class diagrams should include
a) operations only
b) attributes only
c) both operations and attributes
d) none of the mentioned
View Answer
Explanation: In software engineering, a class diagram in the Unified Modeling Language (UML) is a type of static structure diagram that describes the structure of a system by showing the system’s classes, their attributes, operations, and the relationships among objects.
3. Select the statement true for activity diagrams.
a) They can be used to discover parallel activities
b) They are used to depict workflow for a particular business activity
c) Activity diagram do not tell who does what and are difficult to trace back to object models
d) All of the mentioned
View Answer
Explanation: Activity diagrams are graphical representations of workflows of step wise activities and actions with support for choice, iteration and concurrency.
4. Constraints can be represented in UML by
a) {text}
b) [text].
c) Constraint
d) None of the mentioned
View Answer
Explanation: Constraints are represented by {text string}.
5. What is an object?
a) An object is an instance of a class
b) An object includes encapsulation of data
c) An object is not an instance of a class
d) All of the mentioned
View Answer
Explanation: An object is an instance of a class.
6. What is an abstract class?
a) A class that has direct instances, but whose descendants may have direct instances
b) A class that has direct instances, but whose descendants may not have direct instances
c) A class that has no direct instances, but whose descendants may have direct instances
d) All of the mentioned
View Answer
Explanation: An abstract type is a type in a nominative type system which cannot be instantiated directly.
7. Which of the following are the valid relationships in Use Case Diagrams
a) Generalization
b) Include
c) Extend
d) All of the mentioned
View Answer
Explanation: Generalization, include, extend all of these are valid relationships in use case diagrams.
8. Which of the following statement(s) is true about interaction diagrams?
a) Interaction diagrams are at their best when they deal with one main design flow and not multiple variants that can happen
b) Interaction diagrams are good at designing part or all of one use case’s functionality across multiple objects
c) Interaction diagrams allow the analyst to show iteration and conditional execution for messaging between objects
d) All of the mentioned
View Answer
Explanation: Interaction diagram is used to describe some type of interactions among the different elements in the model. So this interaction is a part of dynamic behaviour of the system.
9. UML interfaces are used to:
a) specify required services for types of objects
b) program in Java, but not in C++ or Smalltalk
c) define executable logic to reuse across classes
d) define an API for all classes
View Answer
Explanation: An interface is like a template design for a class that contains no data or implementation; only definitions for methods, properties etc.
10. Referring to the attached diagram, the arrow indicates:
a) Navigability
b) Dependency
c) Association
d) Refers to
View Answer
Explanation: The arrows describe the ways you can navigate.
Sanfoundry Global Education & Learning Series – Software Engineering.
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