In the WRB header, what position is the customer located?

• A. 0
• B. 3
• C. 2
• D. 5

Answer: (B)

In WRB headers, data is arranged in a fixed sequence where each field has a defined meaning. The customer location is stored in the field that comes after the first two fields in this header. That is why identifying that particular slot correctly gives the customer location. The other fields are used for different pieces of information, so they wouldn’t represent the customer location. In practice, you rely on the header specification that maps that position to the customer data when parsing or validating messages.