300-415 Question #388: Real Exam Question with Answer & Explanation

The correct answer is A: 4.4.4.4. For the ZTP process to work, a WAN Edge device must be able to reach the IP address 4.4.4.4.

WAN Edge Router Deployment

Question

Which IP address must be reachable by a WAN Edge device for the ZTP process to work?

For the ZTP process to work, a WAN Edge device must be able to reach the IP address 4.4.4.4.

Common mistakes.

B. 172.16.1.1 is a private IP address and generally not reachable from the internet for ZTP services.
C. 8.8.8.8 is Google's public DNS server, which devices can typically reach for DNS resolution during ZTP, but the specific address 4.4.4.4 is the historically referenced one in Cisco's ZTP documentation for initial contact.
D. 10.1.1.1 is a private IP address and generally not reachable from the internet for ZTP services.

Concept tested. Cisco SD-WAN ZTP server reachability

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-xe-gs-book_chapter_011.html#concept_x3p_kcb_c1b

#ZTP#WAN Edge provisioning#DNS#SD-WAN deployment

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