A security manager for a service provider has approved two vendors for connections to the service provider backbone. One vendor will be providing authentication
services for its payment card service, and the other vendor will be providing maintenance to the service provider infrastructure sites. Which of the following
business agreements is MOST relevant to the vendors and service provider’s relationship?

A.
Memorandum of Agreement

B.
Interconnection Security Agreement

C.
Non-Disclosure Agreement

D.
Operating Level Agreement