McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Master of Science in Computer Science (MSc CS) .
| 1. |
. Object oriented analysis and design can be handled by the one who knows UML. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 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 (a) and (b) |
| D. | none of the mentioned |
| Answer» B. attributes only | |
| 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 |
| Answer» D. all of the mentioned | |
| 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 |
| Answer» A. {text} | |
| 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 |
| Answer» A. an object is an instance of a class. | |
| 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. |
| Answer» C. a class that has no direct instances, but whose descendants may have direct instances. | |
| 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 |
| Answer» D. all of the mentioned | |
| 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 these |
| Answer» D. all of these | |
| 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. |
| Answer» A. specify required services for types of objects. | |
| 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 |
| Answer» A. navigability | |
| Explanation: the arrows describe the ways you can navigate. | |
| 11. |
Which of the following is a building block of UML? |
| A. | things |
| B. | relationships |
| C. | diagrams |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: all are the building blocks of uml which are further sub-categorized. | |
| 12. |
Classes and interfaces are a part of |
| A. | structural things |
| B. | behavioral things |
| C. | grouping things |
| D. | annotational things |
| Answer» A. structural things | |
| Explanation: structural things are mostly static parts of a model, representing elements that are either conceptual or physical. | |
| 13. |
What is a collection of operations that specify a service of a class or component? |
| A. | use case |
| B. | actor |
| C. | interface |
| D. | relationship |
| Answer» C. interface | |
| Explanation: the answer is self explanatory. | |
| 14. |
What can be requested from any object of the class to affect behavior? |
| A. | object |
| B. | attribute |
| C. | operation |
| D. | instance |
| Answer» C. operation | |
| Explanation: an operation is the implementation of a service that can be requested from any object of the class to affect behavior. | |
| 15. |
Which things are dynamic parts of UML models? |
| A. | structural things |
| B. | behavioral things |
| C. | grouping things |
| D. | annotational things |
| Answer» B. behavioral things | |
| Explanation: these are the verbs of a model, representing behavior over time and space. | |
| 16. |
Which diagram in UML emphasizes the time-ordering of messages? |
| A. | activity |
| B. | sequence |
| C. | collaboration |
| D. | class |
| Answer» B. sequence | |
| Explanation: this diagram is a model describing how groups of objects collaborate in some behavior over time. | |
| 17. |
. Object diagram captures the behavior of a single use case. |
| A. | true |
| B. | false |
| Answer» B. false | |
| Explanation: sequence diagram is responsible for this. | |
| 18. |
If you are working on real-time process control applications or systems that involve concurrent processing, you would use a |
| A. | activity diagram |
| B. | sequence diagram |
| C. | statechart diagram |
| D. | object diagram |
| Answer» C. statechart diagram | |
| Explanation: a statechart diagram shows a state machine, consisting of states, transitions, events, and activities. | |
| 19. |
Which diagram shows the configuration of run-time processing elements? |
| A. | deployment diagram |
| B. | component diagram |
| C. | node diagram |
| D. | er-diagram |
| Answer» A. deployment diagram | |
| Explanation: a deployment diagram shows the configuration of run-time processing elements and the software components, processes, and objects. | |
| 20. |
Which things in UML are the explanatory parts of UML models? |
| A. | structural things |
| B. | behavioral things |
| C. | grouping things |
| D. | annotational things |
| Answer» D. annotational things | |
| Explanation: it include a note which is simply a symbol for rendering constraints and comments attached to an element or a collection of elements. | |
| 21. |
Which of the following term is best defined by the statement:”a structural relationship that specifies that objects of one thing are connected to objects of another”? |
| A. | association |
| B. | aggregation |
| C. | realization |
| D. | generalization |
| Answer» A. association | |
| Explanation: the answer is self explanatory. | |
| 22. |
What refers to the value associated with a specific attribute of an object and to any actions or side? |
| A. | object |
| B. | state |
| C. | interface |
| D. | none of the mentioned |
| Answer» B. state | |
| Explanation: in a state chart diagram, effects occur when the attribute’s value changes. | |
| 23. |
Which of the following UML diagrams has a static view? |
| A. | collaboration |
| B. | use case |
| C. | state chart |
| D. | activity |
| Answer» B. use case | |
| Explanation: a use case diagrams captures only the functionality of the system whereas a dynamic model/view captures the functions as well as the action. | |
| 24. |
Which diagram in UML shows a complete or partial view of the structure of a modeled system at a specific time? |
| A. | sequence diagram |
| B. | collaboration diagram |
| C. | class diagram |
| D. | object diagram |
| Answer» D. object diagram | |
| Explanation: an object diagram focuses on some particular set of object instances and attributes, and the links between the instances. it is a static snapshot of a dynamic view of the system. | |
| 25. |
Interaction Diagram is a combined term for |
| A. | sequence diagram + collaboration diagram |
| B. | activity diagram + state chart diagram |
| C. | deployment diagram + collaboration diagram |
| D. | none of the mentioned |
| Answer» A. sequence diagram + collaboration diagram | |
| Explanation: interaction diagram are used to formalize the dynamic behavior of the system. | |
| 26. |
. Structure diagrams emphasize the things that must be present in the system being modeled. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: since structure diagrams represent the structure they are used extensively in documenting the architecture of software systems | |
| 27. |
h of the following diagram is time oriented? |
| A. | collaboration |
| B. | sequence |
| C. | activity |
| Answer» B. sequence | |
| Explanation: a sequence diagrams timeline along which tasks are completed | |
| 28. |
How many diagrams are here in Unified Modelling Language? |
| A. | six |
| B. | seven |
| C. | eight |
| D. | nine |
| Answer» D. nine | |
| Explanation: the nine uml diagrams include use-case, sequence, collaboration, activity, state-chart, deployment, class, object and component. | |
| 29. |
Which of the following is not needed to develop a system design from concept to detailed object-oriented design? |
| A. | designing system architecture |
| B. | developing design models |
| C. | specifying interfaces |
| D. | developing a debugging system |
| Answer» D. developing a debugging system | |
| Explanation: the debugging system is a part of testing phase. | |
| 30. |
Which of the following is a dynamic model that shows how the system interacts with its environment as it is used? |
| A. | system context model |
| B. | interaction model |
| C. | environmental model |
| D. | both system context and interaction |
| Answer» B. interaction model | |
| Explanation: the answer is self explanatory. | |
| 31. |
Which of the following is a structural model that demonstrates the other systems in the environment of the system being developed? |
| A. | system context model |
| B. | interaction model |
| C. | environmental model |
| D. | both system context and interaction |
| Answer» A. system context model | |
| Explanation: the context model of a system may be represented using associations. associations simply show that there are some relationships between the entities involved in the association. | |
| 32. |
Which of the following come under system control? |
| A. | reconfigure |
| B. | shutdown |
| C. | powersave |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: functionalities are governed by the system. | |
| 33. |
We use _________ where various parts of system use are identified and analyzed in turn. |
| A. | tangible entities |
| B. | scenario-based analysis |
| C. | design-based analysis |
| D. | none of the mentioned |
| Answer» B. scenario-based analysis | |
| Explanation: use a scenario-based analysis where various scenarios of system use are identified and analyzed in turn. | |
| 34. |
Which model describes the static structure of the system using object classes and their relationships? |
| A. | sequence model |
| B. | subsystem model |
| C. | dynamic model |
| D. | structural model |
| Answer» D. structural model | |
| Explanation: important relationships that may be documented at this stage are generalization (inheritance) relationships, uses/used-by relationships, and composition relationships. | |
| 35. |
Which model shows the flow of object interactions? |
| A. | sequence model |
| B. | subsystem model |
| C. | dynamic model |
| D. | both sequence and dynamic model |
| Answer» A. sequence model | |
| Explanation: sequence model are represented using a uml sequence or a collaboration diagram and are dynamic models | |
| 36. |
If the system state is Shutdown then it can respond to which of the following message? |
| A. | restart() |
| B. | reconfigure() |
| C. | powersave() |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: a restart() message causes a transition to normal operation. both the powersave() and reconfigure() messages cause a transition to a state in which the system reconfigures itself. | |
| 37. |
Which message is received so that the system moves to the Testing state, then the Transmitting state, before returning to the Running state? |
| A. | signalstatus() |
| B. | remotecontrol() |
| C. | reconfigure() |
| D. | reportstatus() |
| Answer» D. reportstatus() | |
| Explanation: the answer is self explanatory. | |
| 38. |
. Open source development involves making the source code of a system publicly available. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: this means that many people can propose changes and improvements to the software. | |
| 39. |
Which of the following is not the primary objectives in the analysis model? |
| A. | describing the customer complaints |
| B. | establishing a basis for the creation of a software design |
| C. | defining a set of requirements that can be validated once the software is built |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| Explanation: all the options are covered in analysis model. | |
| 40. |
A description of each function presented in the DFD is contained in a ________. |
| A. | data flow |
| B. | process specification |
| C. | control specification |
| D. | data store |
| Answer» B. process specification | |
| Explanation: the answer is self explanatory. | |
| 41. |
Which diagram indicates the behaviour of the system as a consequence of external events? |
| A. | data flow diagram |
| B. | state transition diagram |
| C. | control specification diagram |
| D. | workflow diagram |
| Answer» B. state transition diagram | |
| Explanation: the state transition diagram represents the various modes of behavior (called states) of the system and the manner in which transitions are made from state to state. | |
| 42. |
A data model contains |
| A. | data object |
| B. | attributes |
| C. | relationships |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: the data object, | |
| 43. |
The __________ of a relationship is 0 if there is no explicit need for the relationship to occur or the relationship is optional. |
| A. | modality |
| B. | cardinality |
| C. | entity |
| D. | structured analysis |
| Answer» A. modality | |
| Explanation: the modality is 1 if an occurrence of the relationship is mandatory, else 0 for optional relationship. | |
| 44. |
A _________ is a graphical representation that depicts information flow and the transforms that are applied as data moves from input to output. |
| A. | data flow diagram |
| B. | state transition diagram |
| C. | control specification |
| D. | workflow diagram |
| Answer» B. state transition diagram | |
| Explanation: the basic form of a data flow diagram, also known as a data flow graph or a bubble chart. | |
| 45. |
. A data condition occurs whenever a data is passed to an input element followed by a processing element and the result in control output. |
| A. | true |
| B. | false |
| Answer» A. true | |
| Explanation: standard flow of condition check. | |
| 46. |
The __________ enables the software engineer to develop models of the information domain and functional domain at the same time |
| A. | data flow diagram |
| B. | state transition diagram |
| C. | control specification |
| D. | activity diagram |
| Answer» A. data flow diagram | |
| Explanation: as the dfd is refined into greater levels of detail, the analyst performs an implicit functional decomposition of the system, | |
| 47. |
The __________ contains a state transition diagram that is a sequential specification of behavior. |
| A. | data flow diagram |
| B. | state transition diagram |
| C. | control specification |
| D. | workflow diagram |
| Answer» C. control specification | |
| Explanation: the control specification(cspec) describes the behavior of the system, but it gives us no information about | |
| 48. |
.Which of the following is not a construct? |
| A. | sequence |
| B. | condition |
| C. | repetition |
| D. | selection |
| Answer» D. selection | |
| Explanation: sequence implements processing steps that are essential in the specification of any algorithm. | |
| 49. |
.Which of the following steps is applied to develop a decision table? |
| A. | list all actions that can be associated with a specific procedure |
| B. | list all conditions during execution of the procedure. |
| C. | define rules by indicating what action(s) occurs for a set of conditions. |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: a decision table includes action stub and a condition stub with a set of rules. | |
| 50. |
Which of the following term is best defined by the statement:”The ability to represent local and global data is an essential element of component-level design.”? |
| A. | data representation |
| B. | logic verification |
| C. | “code-to” ability |
| D. | automatic processing |
| Answer» A. data representation | |
| Explanation: the answer is self explanatory. | |
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