Signals travel in a cable at some percentage of the velocity of light. What is the term for this?

Exporting a query as a Microsoft Excel workbook will:

A) require additional processing and computer needs. B) increase the performance and optimization of the query. C) Automatically save the changes to the query in the Access database. D) provide an additional layer of data integrity as the original data is stored safely in the database and is protected from any errors that could originate in the spreadsheet.

Describe a restart procedure that the merchant’s computer can use to deal with crashes during the SET protocol.

What will be an ideal response?