Cisco 400-051 Exam

A voice engineer is preparing to migrate from PRI to SIP. Which three SIP request methods are available? (choose three)

  • A. NOTIFY
  • B. TRYING
  • C. PRACK
  • D. USE PROXY
  • E. UNAUTHORIZED
  • F. OPTIONS
Answer: Option A. C. F.
Explanation: 
No answer description available for this question

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