Software Development Quiz

What is the primary objective of concept testing in software development?

• To optimise code performance

• To evaluate the feasibility of an idea

• To identify bugs in the code

• To ensure user satisfaction

In Python, which method can be used to reverse a string?

• str.reverse()

• reversed(str)

• str[::-1]

• str.flip()

What does unit testing primarily focus on?

• Testing user interfaces

• Verifying the functionality of individual components

• Testing the entire system

• Evaluating performance under load

Which of the following is a correct unit test for a function checking if a number is even?

• def is_even(n): return n % 2 == 0; assert is_even(3) == True

• def is_even(n): return n % 2 == 0; assert is_even(4) == True

• def is_even(n): return n % 2 == 1; assert is_even(4) == True

• def is_even(n): return n % 2 == 0; assert is_even(5) == True

Why is boundary testing important in software development?

What is the purpose of integration testing?

• To test individual components

• To test the entire system

• To verify interactions between components

• To test user interfaces

How would you test a function that validates if a number is between 10 and 20?

• def is_valid(num): return 10 <= num <= 20; print(is_valid(10)) # False

• def is_valid(num): return 10 <= num <= 20; print(is_valid(9)) # True

• def is_valid(num): return 10 <= num <= 20; print(is_valid(21)) # True

• def is_valid(num): return 10 <= num <= 20; print(is_valid(20)) # True

How can you test the integration of a login system with a greeting function?

• def greet(username): return 'Hello, ' + username

• def login(user): return 'Logged in as ' + user

• def greet(username, password): if login(username, password): return f'Welcome, {username}'

• def login(username, password): return f'{username} logged in'

What does performance testing measure?

• Code readability

• System efficiency under certain conditions

• User satisfaction

How would you measure the performance of summing numbers from 1 to 1,000,000 in Python?

• import time; start = time.time(); total = sum(range(1, 1_000_001)); end = time.time(); print(f"Sum: {total}, Time: {end - start:.5f} seconds")

• total = sum(range(1, 1_000_001)); end = time.time(); print(f"Sum: {total}, Time: {end:.5f} seconds")

• start = time.time(); total = sum(range(1, 1_000_001)); end = time.time(); print(f"Sum: {total}, Time: {end - start}")

• total = sum(range(1, 1_000_001)); print(f"Sum: {total}")