Which two advantages of using DWDM over traditional optical networks are true? (Choose two.)

DWDM provides inherent topology flexibility and automatic service protection without a capacity or performance penalty through intelligent optical switching, supporting ring, mesh, or point-to-point topologies with built-in protection switching.

DWDM multiplexes multiple wavelengths onto a single fiber strand, directly enabling bandwidth expansion over existing optical infrastructure without requiring new fiber deployment.

This option omits the 'without penalty' and 'intelligent' qualifiers that are key distinguishing features of DWDM protection, making it an incomplete description that does not accurately represent the DWDM advantage.

Chromatic dispersion is a physical impairment that DWDM systems must actively compensate for, not a benefit - it causes pulse spreading and signal degradation, representing a challenge rather than an advantage.

This option implies that service protection requires direct integration with an external system, which contradicts DWDM's defining characteristic of inherent, built-in protection that operates independently without external system dependencies.