Which two options are the two primary features of nLight Control Plane? (Choose two.)

Question

Options

• Aconstraint-based routing
• Bsegment routing
• CDWDM troubleshooting
• Dmultilayer restoration

• A
  86% (30)
• B
  9% (3)
• C
  6% (2)

Explanation

nLight Control Plane is Ciena's intelligent optical control plane designed to automate and optimize optical network operations. Constraint-based routing (A) is a core feature because the control plane computes optimal paths by evaluating network constraints such as bandwidth, latency, diversity, and protection requirements - this is the fundamental mechanism by which it makes routing decisions. Multilayer restoration (D) is equally central, as it enables automated recovery across multiple network layers (e.g., optical and packet layers simultaneously), reducing restoration time and complexity beyond what single-layer systems can achieve.

Segment routing (B) is a traffic engineering paradigm primarily associated with IP/MPLS and SRv6 networks, not a defining feature of nLight's optical control plane. DWDM troubleshooting (C) is an operational/management task rather than a control plane feature - it belongs more to the network management system layer.

Memory tip: Think "nLight = Constraints + Cross-layer Coverage." The control plane needs to know what routes are allowed (constraints) and how to recover across layers (multilayer restoration) - the two jobs that define an intelligent optical control plane.

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