7) Explain segments that are used in account numbers. How many segments can be used in an account number? What is the largest possible size of a segment? (3 Marks) 8) Where do you enter valid segment codes? Do these segment codes have to be created before they can be used? (3 Marks) 9) Where are source codes used? (1 Mark) 10) What is the maximum number of characters allowed in an account? (1 Mark) 11) What is a control account? (2 Marks)