A service provider guarantees for end-to-end network traffic performance to a customer. Which of
the following types of agreement is this?

A.
SLA

B.
VPN

C.
NDA

D.
LA

Explanation:
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
(NDAs) are often used to protect the confidentiality of an invention as it is being evaluated by
incorrect. There is no such type of agreement as VPN.