Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

Last Updated: Oct 20, 2021
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Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

  • satellite
  • copper
  • fiber optic
  • Wi-Fi

Explanation: Technologies such as SONET, SDH, and DWDM are designed to run over fiber optic cables.

Related exam: CCNA 3 v7 Module 7 Quiz - WAN Concepts

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