IT – D278 ITSW 2113
Scripting & Programming Foundations
3.0 Credits
Objective Assessment Review (Qns &
Ans)
2025
©2025
, Question 1:
Which concept in functional programming ensures that a function always
produces the same output for a given input without causing side effects?
- A. Encapsulation
- B. Polymorphism
- C. Referential Transparency
- D. Data Hiding
Correct ANS: C. Referential Transparency
Rationale:
Referential transparency is a hallmark of pure functions in functional
programming. It guarantees that functions do not depend on external
states, thus producing consistent results and simplifying debugging and
reasoning about code.
---
Question 2:
In dynamically typed scripting languages, what does it mean when we say
that functions are “first-class citizens”?
- A. They are compiled before other entities
- B. They can be assigned to variables, passed as arguments, and returned
from other functions
- C. They are executed with the highest priority
- D. They are stored in a special memory area
Correct ANS: B. They can be assigned to variables, passed as
arguments, and returned from other functions
Rationale:
Treating functions as first-class citizens means they can be used like any
other data type—stored in variables, passed to or returned from
functions—which is fundamental to many scripting languages and
supports higher-order programming.
©2025
, ---
Question 3:
Which type of function allows developers to write anonymous, inline
functions in languages like Python?
- A. Decorator functions
- B. Lambda functions
- C. Recursive functions
- D. Generator functions
Correct ANS: B. Lambda functions
Rationale:
Lambda functions in Python enable the creation of small, anonymous
functions that are defined in a single expression, often used for short-
term operations or as arguments to higher-order functions.
---
Question 4:
What is the term for a function that “remembers” its lexical scope even
when executed outside its original context?
- A. Closure
- B. Coroutine
- C. Recursion
- D. Callback
Correct ANS: A. Closure
Rationale:
A closure arises when a function is defined within another function and
retains access to its parent function’s variables, even after the parent has
finished execution. This allows for data encapsulation and stateful
functions in a functional paradigm.
---
©2025
Scripting & Programming Foundations
3.0 Credits
Objective Assessment Review (Qns &
Ans)
2025
©2025
, Question 1:
Which concept in functional programming ensures that a function always
produces the same output for a given input without causing side effects?
- A. Encapsulation
- B. Polymorphism
- C. Referential Transparency
- D. Data Hiding
Correct ANS: C. Referential Transparency
Rationale:
Referential transparency is a hallmark of pure functions in functional
programming. It guarantees that functions do not depend on external
states, thus producing consistent results and simplifying debugging and
reasoning about code.
---
Question 2:
In dynamically typed scripting languages, what does it mean when we say
that functions are “first-class citizens”?
- A. They are compiled before other entities
- B. They can be assigned to variables, passed as arguments, and returned
from other functions
- C. They are executed with the highest priority
- D. They are stored in a special memory area
Correct ANS: B. They can be assigned to variables, passed as
arguments, and returned from other functions
Rationale:
Treating functions as first-class citizens means they can be used like any
other data type—stored in variables, passed to or returned from
functions—which is fundamental to many scripting languages and
supports higher-order programming.
©2025
, ---
Question 3:
Which type of function allows developers to write anonymous, inline
functions in languages like Python?
- A. Decorator functions
- B. Lambda functions
- C. Recursive functions
- D. Generator functions
Correct ANS: B. Lambda functions
Rationale:
Lambda functions in Python enable the creation of small, anonymous
functions that are defined in a single expression, often used for short-
term operations or as arguments to higher-order functions.
---
Question 4:
What is the term for a function that “remembers” its lexical scope even
when executed outside its original context?
- A. Closure
- B. Coroutine
- C. Recursion
- D. Callback
Correct ANS: A. Closure
Rationale:
A closure arises when a function is defined within another function and
retains access to its parent function’s variables, even after the parent has
finished execution. This allows for data encapsulation and stateful
functions in a functional paradigm.
---
©2025
