A company's potential new vendors are asking for detailed network and traffic information so they can properly size a firewall. Which of the following would work BEST to protect the company's…

An RFP (Request for Proposal) is a public-facing solicitation document that broadens the distribution of requirements rather than restricting disclosure of sensitive internal information.

An MSA (Master Service Agreement) defines the ongoing terms of an established business relationship and is executed after vendor selection, so it does not protect sensitive data shared during the pre-selection phase.

An RFQ (Request for Quotation) is used to solicit pricing from vendors and creates no confidentiality or data protection obligations on the vendor.

An NDA (Non-Disclosure Agreement) is a legally binding contract that prohibits vendors from disclosing or misusing confidential information shared during pre-contract discussions. It is the standard mechanism to protect sensitive network topology and traffic data before a formal business relationship exists, and it creates enforceable liability if a vendor violates the agreement.