Question 1: Explain the difference between opening a file in 'read' mode and 'write' mode in programming.

Answer: Opening a file in 'read' mode allows you to only view its contents without making changes, while 'write' mode allows you to create a new file or overwrite existing content.

Question 2: Describe what happens when a program tries to read from a file that does not exist.

Answer: The program will usually generate an error or exception indicating that the file was not found.

Question 3: Write a simple pseudocode snippet that opens a file named 'data.txt', reads its contents, and then closes the file.

Answer: Open 'data.txt' in read mode Read the contents Close the file

Question 4: List three types of data that can be stored in a file.

Answer: Text, numbers, images (if in binary format), or structured data like JSON or CSV.

Question 5: Complete the truth table for the AND logic gate with inputs A and B, and output C.

Answer: A | B | C 0 | 0 | 0 0 | 1 | 0 1 | 0 | 0 1 | 1 | 1

Question 6: Complete the truth table for the OR logic gate with inputs A and B, and output C.

Answer: A | B | C 0 | 0 | 0 0 | 1 | 1 1 | 0 | 1 1 | 1 | 1

Question 7: Draw a logic circuit that uses an AND gate and an OR gate to produce an output that is high only when either both inputs are high or both are low. Label all inputs and outputs clearly.

Answer: A correct sketch would show two inputs feeding into an AND gate and a NOT gate combined with an OR gate, or a configuration that implements the specified logic. (Students should interpret the description and produce a circuit accordingly.)

Question 8: Sketch a flowchart demonstrating the process of opening a file, reading data, and closing the file in a programming context.

Answer: A flowchart with three main steps: 'Open file', 'Read data', 'Close file', connected sequentially with arrows.

Question 9: Describe a scenario where file handling could be used in a real-world application.

Answer: A school management system saving student records to a file, or a game saving progress to a save file.

Question 10: In your own words, explain why it is important to close a file after opening it in a program.

Answer: Closing a file releases system resources, ensures data is saved properly, and prevents data corruption or memory leaks.