SIP Protocol Fundamentals

Question 1

Which SIP method is used to request information about the capabilities of a SIP endpoint?

Accepted Answer

OPTIONS

Answer

REGISTER

Answer

BYE

Answer

INVITE

Question 2

What does a SIP response code of 180 Ringing indicate?

Accepted Answer

The destination endpoint is currently ringing

Answer

The call has been successfully established

Answer

The request has been received and is being processed

Answer

The request cannot be fulfilled due to an error

Question 3

Which SIP header identifies the unique identifier for a particular SIP transaction or call?

Accepted Answer

Call-ID

Answer

To

Answer

From

Answer

CSeq

Question 4

What is the correct order of the main components in a SIP message?

Accepted Answer

Request Line, Headers, Body

Answer

Headers, Body, Request Line

Answer

Body, Request Line, Headers

Answer

Request Line, Body, Headers

Question 5

Which component of a SIP transaction is responsible for maintaining state between a client request and the server response?

Accepted Answer

SIP Dialog

Answer

SIP Proxy

Answer

SIP Registrar

Answer

SIP Gateway