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Exam 500-710 topic 1 question 31 discussion

Actual exam question from Cisco's 500-710
Question #: 31
Topic #: 1
[All 500-710 Questions]

For Business to Business calls, which option must be configured on an Expressway Edge to route calls to an unknown domain?

  • A. traversal zone to a public DNS address
  • B. neighbor zone to the other business
  • C. SIP trunk to a public DNS server
  • D. DNS zone and a public DNS address
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Suggested Answer: A 🗳️
by zeynepece at Oct. 7, 2024, 8:22 a.m.

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zeynepece
8 months ago
Selected Answer: D
In Business-to-Business (B2B) call scenarios, the Expressway Edge needs to route calls to unknown external domains. To achieve this, a DNS zone must be configured on the Expressway Edge. This allows the system to perform DNS lookups to resolve the domain names of external organizations using a public DNS address. The Expressway Edge will query public DNS servers to find the appropriate address or SRV records to route the call to the correct destination. To clarify: A. Traversal zone to a public DNS address: Traversal zones are used for internal communication between the Expressway Core and Edge, not for resolving unknown external domains. Therefore, the correct configuration for routing calls to an unknown domain in a B2B environment is D. DNS zone and a public DNS address.
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