Here are the answers to your questions:
Question 1: Which of the following is not a logic gate?
Answer: NAXOR (the correct name is XOR, which stands for "exclusive or")
Question 2: How many characters can ASCII represent?
Answer: 128 (ASCII can represent characters from 0 to 127)
Question 3: What is the concatenation operator?
Answer: + (in many programming languages, the "+" operator is used for concatenation)
Question 4: Which type of data analytics could best explain why shoppers bought more items from the outside edges of the store rather than the inner aisles?
Answer: diagnostic analytics (this type of analytics is used to explain reasons for trends or patterns)
If you have any further questions or need clarification on any topics, feel free to ask!