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A(n) __________ is an association between a globally unique SIP or SIPS URI and the user agent's contact address. This association is written by the registrar server to a database where it can be used by a proxy in the local domain.

A.

location record

B.

AOR

C.

binding

D.

public address

Which one of the following statements about SIP is FALSE?

A.

The Via header field indicates the transport used for the transaction.

B.

The Contact header field provides a SIP or SIPS URI that can be used to contact that specific instance of the UA for subsequent requests.

C.

A SIP transaction consists of a single request and any responses to that request, which include zero or more provisional responses and one or more final responses.

D.

A dialog is identified at each UA with a dialog ID, which consists of a Call-ID value, a Contact and a Request URI.