Software Engineering MCQs

Which level of Entity Relationship Diagram (ERD) models all entities and relationships ?

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A. Level 1
B. Level 2
C. Level 3
D. Level 4
✅ The correct answer is option B.
Explanation: Level 1 ERD models all data objects (entities) and their “connections” to one another while Level 3 ERD models all entities, relationships, and the attributes that provide further depth. Thus option b is correct.

A method within a class is only accessible by classes that are defined within the same package as the class of the method. Which one of the following is used to enforce such restriction ?

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A. Declare the method with the keyword public.
B. Declare the method with the keyword private.
C. Do not declare the method with any accessibility modifiers.
D. Declare the method with the keyword public and private.
✅ The correct answer is option C.

Which of the following is not a characteristics of box diagram ?

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A. functional domain
B. arbitrary transfer of control is impossible
C. recursion is easy to represent
D. providing a notation that translates actions and conditions
✅ The correct answer is option D.
Explanation: This functionality is covered by UML diagrams.