Which characteristic is true about SIP protocol messages?

A.
Binary

B.
Text-based

C.
Numeric

D.
Encrypted

Explanation:

Format All SIP messages are eitherrequests from a server or client or responses to a request. The messages are formatted according to RFC 822,”Standard for the format of ARPA internet text messages.”For all messages, the general format is:
1.A start line 2.One or more header fields 3.An empty line 4.A message body (optional) Each line must end with a carriage return-line feed (CRLF).