IS 296 Python Programming Review Exam Q & A 2024 1. What is the output of the following Python code snippet? ```python x = 10 y = 50 if x ** 2 > 100 and y < 100: print(x, y) ``` A) 10 50 B) 100 50 C) No output D) Syntax Error Answer: C) No output Rationale: The `and` operator requires both conditions to be true. While `y < 100` is true, `x ** 2 > 100` is false because 10 squared is 100, not greater than 100. 2. In Java, which of the following is used to handle an array index that is out of bounds? A) try -catch block B) if-else statement C) do -while loop D) for -each loop Answer: A) try -catch block Rationale: An ArrayIndexOutOfBoundsException is a runtime exception that can be handled using a try -catch block to maintain the flow of program execution. 3. Which data type would be best for storing a person's telephone number in a database? A) Integer B) String C) Float D) Boolean Answer: B) Str ing Rationale: Telephone numbers are not used for calculations and often contain leading zeros and other non -numeric characters, making the string data type the most appropriate choice. 4. What is the result of the following conditional statement given th e variables `a = 4` and `b = 3`? ```c (a > b) ? a : b ``` A) 3 B) 4 C) 7 D) 0 Answer: B) 4 Rationale: The ternary operator `? :` returns the first value if the condition is true, and the second value if it is false. Since `a > b` is true, `a` is returned. 5. In cybersecurity, why is input validation critical when dealing with user input? A) It helps in creating a user -friendly interface. B) It prevents SQL injection and other types of attacks. C) It ensures that the program runs without errors. D) It speeds up the processing of input data. Answer: B) It prevents SQL injection and other types of attacks. Rationale: Input validation is a security measure to ensure that only properly formatted data enters the workflow, preventing malicious data from caus ing harm or accessing sensitive information. 6. Which loop structure is ideal when the number of iterations is known beforehand? A) while loop B) do -while loop C) for loop D) Infinite loop
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