Question 1: Write a line of code in your preferred programming language that creates a string variable called 'greeting' with the value 'Hello, World!'.

Answer: For example, in Python: greeting = 'Hello, World!'

Question 2: Given the string 'Programming', write a method or function call that returns the substring 'gram'.

Answer: In Python: 'Programming'[2:6] (since indexing starts at 0)

Question 3: What will be the output of the following string operation? If the string is 'Computer', what is the result of 'Computer'.lower()?

Answer: computer

Question 4: Explain what the following code does: string = 'Hello'; string = string + ' there!'.

Answer: It adds the string ' there!' to the end of the existing string 'Hello', resulting in 'Hello there!'.

Question 5: Write a small program snippet that checks if the string 'data' contains the letter 'a'.

Answer: In Python: 'a' in 'data' (which returns True)

Question 6: Describe how to reverse the string 'Python' using string slicing.

Answer: In Python: 'Python'[::-1], which results in 'nohtyP'.

Question 7: A string variable contains the text 'Mississippi'. Write a method to find out how many times the letter 's' appears in it.

Answer: In Python: 'Mississippi'.count('s') (which returns 4)

Question 8: Complete the following truth table for the AND logic gate: | Input A | Input B | Output | |---------|---------|---------| | 0 | 0 | ? | | 0 | 1 | ? | | 1 | 0 | ? | | 1 | 1 | ? |

Answer: Output: 0, 0, 0, 1 respectively for each row.

Question 9: Sketch a simple flowchart that describes the process of checking if a number is even. Use decision symbols and process symbols, and leave space for the drawing.

Answer: A correct sketch would show a start symbol, a process box checking 'number % 2 == 0', a decision symbol with 'Yes' leading to 'Number is even', and 'No' leading to 'Number is odd', ending with an end symbol.

Question 10: Describe how you would remove the first character from a string called 'name' in your programming language.

Answer: In Python: name[1:] which returns the string without the first character.

Question 11: Write a brief explanation of what string concatenation means.

Answer: String concatenation is the process of joining two or more strings end-to-end to form a new, longer string.