4A0-220
Nokia GMPLS-Controlled Optical Networks
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Question: 1
Which of the following is not a key feature of GMPLS?
A. Self-discovery
B. Fast protection
C. Restoration
D. Resource optimization
Answer: D
Explanation:
GMPLS is a protocol suite that extends the MPLS signaling and routing capabilities to control
different types of switching technologies, such as optical, TDM, and packet switching1. GMPLS
has several key features, such as self-discovery, fast protection, and restoration. Self-discovery
allows GMPLS nodes to automatically discover their neighbors and exchange information about
their capabilities and resources2. Fast protection enables GMPLS nodes to quickly switch to
backup paths in case of a failure, without relying on the control plane3. Restoration allows
GMPLS nodes to dynamically establish new paths in the network after a failure, using the control
plane3. Resource optimization is not a key feature of GMPLS, but rather a potential benefit of
using GMPLS to efficiently utilize the network resources and avoid over-provisioning. Reference:
1: Nokia GMPLS-controlled Optical Networks Course | Nokia
2: GMPLS - Nokia
3: Traffic survivability through Protection and Restoration Combined (PRC) - YouTube
[4]: GMPLS: Architecture and Applications - Google Books
Question: 2
Automation is one of the key features of GMPLS. What is its main benefit?
A. Reducing OPEX
B. Reducing CAPEX
C. Providing resilience against multiple failures
D. Supporting multi-vendor networks
Answer: A
Explanation:
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