Nokia Certified Network Professional – IP/MPLS Services — Question 3

With reference to trails and services, which of the following sentences is correct?

Answer options

• A. Trails are transported over services; that is, trails are clients with respect to services.
• B. A trail can interconnect three ports, while a service always two.
• C. Services are transported over trails; that is, services are clients with respect to trails.
• D. A service is always associated to a single wavelength, while a trail can involve multiple wavelengths.

Correct answer: C

Explanation

The correct answer, C, accurately states that services rely on trails for transportation, making services clients of trails. Options A and D incorrectly reverse the roles of trails and services, while B provides incorrect information about the number of ports a trail or service can connect.