Which of the following correctly represents the port used by FTP control traffic and FTP file transfer traffic respectively?

To facilitate retrieval of specific records from a file, at least one field in each record is chosen as a ________.

a) master record b) record key c) master key d) field key e) master field

Which of the following is a database that stores data in tables that consist of rows and columns?

A. object-oriented B. tabular C. relational D. attribute-based