Which three options are valid SIP URI formats? (Choose three.)

Question

Options

• A[email protected]
• Btel:[email protected]
• Cphone:[email protected]
• Dsip:[email protected]:5060;user=phone
• Esip:bob.cisco.com

• A
  91% (29)
• C
  3% (1)
• E
  6% (2)

Explanation

Valid SIP URI formats must conform to RFC 3261 (SIP) or RFC 3986 (URI general syntax). A ('[email protected]') is a valid SIP address-of-record format used in SIP headers. B ('tel:[email protected]') is a valid TEL URI format as defined in RFC 2806/3966, used to represent telephone numbers. D ('sip:[email protected]:5060;user=phone') is a fully qualified SIP URI including scheme, user, host, port, and URI parameter - all valid components. C ('phone:[email protected]') is incorrect because 'phone:' is not a recognized URI scheme in SIP standards. E ('sip:bob.cisco.com') is invalid in this context because it lacks the required user portion and '@' separator, making it ambiguous as a proper SIP URI.

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