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Exam 400-051 topic 4 question 45 discussion

Actual exam question from Cisco's 400-051
Question #: 45
Topic #: 4
[All 400-051 Questions]

Which two responses from a SIP device, which is the only remote destination on a Cisco Unified Communications Manager SIP trunk with OPTIONS ping enabled, cause the trunk to be marked as "Out of Service"? (Choose two.)

  • A. 503 Service Unavailable
  • B. 408 Request Timeout
  • C. 505 Version Not Supported
  • D. 504 Server Timeout
  • E. 484 Address Incomplete
  • F. 404 Not Found
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Suggested Answer: AB 🗳️
The remote peer may be marked as Out of Service if it fails to respond to OPTIONS, if it sends 503 or 408 responses, or if the Transport Control Protocol (TCP) connection cannot be established. If at least one IP address is available, the trunk is In Service; if all IP addresses are unavailable, the trunk is Out of Service.
References: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/8_5_1/ccmcfg/bccm-851-cm/b06siprf.html
by kidschannel1988 at April 3, 2025, 4:15 p.m.

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