You are designing an optical network. Your goal is to ensure that your design contains the highest degree of resiliency. In which two ways will you leverage a wavelength-switched optical network…

WSON uses a control plane - typically GMPLS/PCE - to assign both the route and the specific wavelength for each optical path, enabling automated and flexible end-to-end connectivity that supports fast restoration.

WSON path computation engines incorporate linear impairments (such as chromatic dispersion and attenuation) and nonlinear impairments (such as cross-phase modulation) to select physically feasible paths, increasing network resilience by avoiding impairment-prone routes.

WSON does not guarantee restoration via strictly the shortest path - it selects paths based on optical impairment feasibility and wavelength availability, which may result in longer but more reliable routes.

WSON does not eliminate the need for dispersion compensating units - physical layer impairments still exist and DCUs may be required depending on span length and fiber type.