PROGRAMMING (PYTHON) EXAM – PRACTICE QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
Data Types and Variables
Control Flow and Iteration
Functions and Scope
Data Structures (Lists, Dictionaries, Tuples, Sets)
Object-Oriented Programming (OOP) Principles
File I/O and Exception Handling
Standard Libraries and Modules
Algorithm Efficiency and Complexity
Testing and Debugging Best Practices
Ethics and Software Licensing Compliance
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate a candidate's proficiency in the
Python programming language, spanning from foundational syntax to advanced architectural
concepts. This exam assesses essential skills in problem-solving, code optimization, and the
practical application of software development principles. Through a combination of multiple-
choice and scenario-based questions, candidates must demonstrate their ability to interpret
complex code blocks, manage data integrity, and apply critical thinking to real-world technical
challenges. There is a strong emphasis on decision-making regarding performance, security, and
professional standards, ensuring the candidate is prepared for high-level software engineering
roles and rigorous technical environments.
,SECTION ONE: QUESTIONS 1–100
1. Which of the following is the correct way to initialize a dictionary with a key "id" and value
101?
A. my_dict = ["id": 101]
B. my_dict = {"id": 101}
C. my_dict = (id, 101)
D. my_dict = {101; "id"}
🟢 Correct answer B. Option
🔴 RATIONALE: Dictionaries in Python use curly braces with key-value pairs separated by a
colon. Option A uses brackets (lists), C uses parentheses (tuples), and D uses incorrect syntax.
2. In Python, what is the primary purpose of the 'self' parameter within a class method?
A. It refers to the class itself rather than the instance.
B. It is a keyword used to initialize global variables.
C. It represents the instance of the object being created or manipulated.
D. It acts as a decorator for private methods.
🟢 Correct answer C. Option
🔴 RATIONALE: 'self' is the conventional name for the first parameter of an instance method,
allowing the method to access attributes and other methods of the specific object instance.
3. Which built-in function can be used to iterate over a list while keeping track of the index of
the current item?
A. range()
B. counter()
C. map()
D. enumerate()
,🟢 Correct answer D. Option
🔴 RATIONALE: enumerate() adds a counter to an iterable and returns it as an enumerate
object, which is highly efficient for loops requiring both index and value.
4. A developer needs to ensure that a block of code runs regardless of whether an exception
was raised during a database connection attempt. Which block should they use?
A. except
B. finally
C. else
D. catch
🟢 Correct answer B. Option
🔴 RATIONALE: The 'finally' block in a try-except-finally statement is executed no matter what,
making it ideal for cleaning up resources like closing database connections.
5. Which of the following follows the PEP 8 recommendation for naming a function?
A. calculateMaximumValue()
B. CalculateMaximumValue
C. calculate_maximum_value
D. CALCULATE_MAXIMUM_VALUE
🟢 Correct answer C. Option
🔴 RATIONALE: PEP 8, the official style guide for Python, recommends using "snake_case"
(lowercase with underscores) for function and variable names.
6. What will be the output of the expression 10 // 3?
A. 3.333
B. 3.0
C. 1
D. 3
, 🟢 Correct answer D. Option
🔴 RATIONALE: The // operator performs floor division in Python, returning the largest integer
less than or equal to the result of the division.
7. Which data structure is most efficient for checking the existence of an item in a collection
of 1,000,000 unique elements?
A. List
B. Tuple
C. Set
D. Linked List
🟢 Correct answer C. Option
🔴 RATIONALE: Sets in Python are implemented using hash tables, providing an average time
complexity of O(1) for membership tests, whereas lists are O(n).
8. When developing software for a healthcare provider, a programmer discovers a security
flaw that could leak patient data. According to professional ethics, what is the immediate
priority?
A. Document the flaw and wait for the next scheduled update.
B. Notify the supervisor or relevant security lead immediately.
C. Patch the flaw secretly to avoid causing panic.
D. Ignore the flaw if it was not part of the assigned task.
🟢 Correct answer B. Option
🔴 RATIONALE: Ethical standards dictate that security vulnerabilities involving sensitive
personal data must be reported through proper channels immediately to mitigate risk.
9. What is the result of the following slice operation? my_list = [1, 2, 3, 4, 5];
print(my_list[1:4])
A. [2, 3, 4]
B. [1, 2, 3]
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
Data Types and Variables
Control Flow and Iteration
Functions and Scope
Data Structures (Lists, Dictionaries, Tuples, Sets)
Object-Oriented Programming (OOP) Principles
File I/O and Exception Handling
Standard Libraries and Modules
Algorithm Efficiency and Complexity
Testing and Debugging Best Practices
Ethics and Software Licensing Compliance
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate a candidate's proficiency in the
Python programming language, spanning from foundational syntax to advanced architectural
concepts. This exam assesses essential skills in problem-solving, code optimization, and the
practical application of software development principles. Through a combination of multiple-
choice and scenario-based questions, candidates must demonstrate their ability to interpret
complex code blocks, manage data integrity, and apply critical thinking to real-world technical
challenges. There is a strong emphasis on decision-making regarding performance, security, and
professional standards, ensuring the candidate is prepared for high-level software engineering
roles and rigorous technical environments.
,SECTION ONE: QUESTIONS 1–100
1. Which of the following is the correct way to initialize a dictionary with a key "id" and value
101?
A. my_dict = ["id": 101]
B. my_dict = {"id": 101}
C. my_dict = (id, 101)
D. my_dict = {101; "id"}
🟢 Correct answer B. Option
🔴 RATIONALE: Dictionaries in Python use curly braces with key-value pairs separated by a
colon. Option A uses brackets (lists), C uses parentheses (tuples), and D uses incorrect syntax.
2. In Python, what is the primary purpose of the 'self' parameter within a class method?
A. It refers to the class itself rather than the instance.
B. It is a keyword used to initialize global variables.
C. It represents the instance of the object being created or manipulated.
D. It acts as a decorator for private methods.
🟢 Correct answer C. Option
🔴 RATIONALE: 'self' is the conventional name for the first parameter of an instance method,
allowing the method to access attributes and other methods of the specific object instance.
3. Which built-in function can be used to iterate over a list while keeping track of the index of
the current item?
A. range()
B. counter()
C. map()
D. enumerate()
,🟢 Correct answer D. Option
🔴 RATIONALE: enumerate() adds a counter to an iterable and returns it as an enumerate
object, which is highly efficient for loops requiring both index and value.
4. A developer needs to ensure that a block of code runs regardless of whether an exception
was raised during a database connection attempt. Which block should they use?
A. except
B. finally
C. else
D. catch
🟢 Correct answer B. Option
🔴 RATIONALE: The 'finally' block in a try-except-finally statement is executed no matter what,
making it ideal for cleaning up resources like closing database connections.
5. Which of the following follows the PEP 8 recommendation for naming a function?
A. calculateMaximumValue()
B. CalculateMaximumValue
C. calculate_maximum_value
D. CALCULATE_MAXIMUM_VALUE
🟢 Correct answer C. Option
🔴 RATIONALE: PEP 8, the official style guide for Python, recommends using "snake_case"
(lowercase with underscores) for function and variable names.
6. What will be the output of the expression 10 // 3?
A. 3.333
B. 3.0
C. 1
D. 3
, 🟢 Correct answer D. Option
🔴 RATIONALE: The // operator performs floor division in Python, returning the largest integer
less than or equal to the result of the division.
7. Which data structure is most efficient for checking the existence of an item in a collection
of 1,000,000 unique elements?
A. List
B. Tuple
C. Set
D. Linked List
🟢 Correct answer C. Option
🔴 RATIONALE: Sets in Python are implemented using hash tables, providing an average time
complexity of O(1) for membership tests, whereas lists are O(n).
8. When developing software for a healthcare provider, a programmer discovers a security
flaw that could leak patient data. According to professional ethics, what is the immediate
priority?
A. Document the flaw and wait for the next scheduled update.
B. Notify the supervisor or relevant security lead immediately.
C. Patch the flaw secretly to avoid causing panic.
D. Ignore the flaw if it was not part of the assigned task.
🟢 Correct answer B. Option
🔴 RATIONALE: Ethical standards dictate that security vulnerabilities involving sensitive
personal data must be reported through proper channels immediately to mitigate risk.
9. What is the result of the following slice operation? my_list = [1, 2, 3, 4, 5];
print(my_list[1:4])
A. [2, 3, 4]
B. [1, 2, 3]
