A service provider guarantees for end-to-end network traffic performance to a customer.

This is a type of service-level agreement. A service-level agreement (SLA) is a negotiated agreement between two parties where one is the customer and the other is the service provider. It records a common understanding about services, priorities, responsibilities, guarantees, and warranties. Each area of service scope should have the 'level of service' defined. The SLA may specify the levels of availability, serviceability, performance, operation, or other attributes of the service, such as billing. Answer: C is incorrect. Non-disclosure agreements (NDAs) are often used to protect the confidentiality of an invention as it is being evaluated by potential licensees. Answer: D is incorrect. License agreements (LA) describe the rights and responsibilities of a party related to the use and exploitation of intellectual property. Answer: B is incorrect. There is no such type of agreement as VPN.