Design and Implementation MCQs

1. 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

✅ The correct answer is option C.
Explanation: An abstract type is a type in a nominative type system which cannot be instantiated directly.

2. 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

✅ The correct answer is option C.
Explanation: An abstract type is a type in a nominative type system which cannot be instantiated directly.

3. A software component____________________?

A. Implements some functionality

B. Has explicit dependencies through provides and required interfaces

C. Communicates through its interfaces only

D. All of the mentioned

✅ The correct answer is option D.
Explanation: All the options identify with features of a software component.

4. 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

✅ The correct answer is option D.
Explanation: All the options are covered in analysis model.

5. Which of the following is a black box testing strategy ?

A. All Statements Coverage

B. Control Structure Coverage

C. Cause-Effect Graphs

D. All Paths Coverage

✅ The correct answer is option C.
Explanation: Rest are test strategies of white box testing.

6. 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

✅ The correct answer is option A.

7. 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

✅ The correct answer is option A.
Explanation: As the DFD is refined into greater levels of detail, the analyst performs an implicit functional decomposition of the system, thereby accomplishing the fourth operational analysis principle for function.

8. The_______________ is represented as two processing boxes connected by an line (arrow) of control ?

A. Repetition

B. Sequence

C. Condition

D. None of the mentioned

✅ The correct answer is option B.

9. A data model contains___________________?

A. data object

B. attributes

C. relationships

D. all of the mentioned

✅ The correct answer is option D.
Explanation: The data model consists of three interrelated pieces of information: the data object,

10. A software might allow a user to interact via________________________?

A. keyboard commands

B. mouse movement

C. voice recognition commands

D. all of the mentioned

✅ The correct answer is option D.
Explanation: All the mentioned input mediums are available today.