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350-030 · Question #308
350-030 Question #308: Real Exam Question with Answer & Explanation
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Question
Which set of SIP headers is mandatory in SIP requests?
Options
- ACall-ID, Contact, User-Agent, RSeq, SDP
- BAllow, Supported, Via, From, To, CSeq
- CVia, From, To, Call-ID, CSeq, Contact
- DContent-Type, Content-Length, Session-Expires, Via, From
- EReq URI, From, Via, To, CSeq
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