Cisco Certified Design Professional (CCDP): The CCDP certification builds advanced knowledge of the network design concepts and principles required to develop multi-layer enterprise architectures and network components.
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CCDP certification is composed by 3 exams: 300-320 ARCH, 300-101 ROUTE and 300-115 SWITCH
If you have CCNP R&S certification so you only have to take ARCH, but anyway you have to take CCDA Certification first.
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