Nokia Certified Network Professional – IP/MPLS Services — Question 31

Which of the following is an example of optical protection mechanism?

Answer options

• A. Optical regeneration (e.g., back-to-back regeneration)
• B. O-SNCP (e.g., via Y-cable or OPS card)
• C. GMPLS-enabled SBR
• D. GR and SBR combined

Correct answer: B

Explanation

O-SNCP is a specific optical protection mechanism that allows for redundancy through Y-cables or OPS cards, ensuring continued service in case of a failure. The other options, such as optical regeneration and GMPLS-enabled SBR, focus on different functionalities that do not primarily serve as protection mechanisms.