Exam 25: Internet Multimedia Support

Soft-time applications have zero loss tolerance.

The requirements of real-time traffic differ from those of high-speed but non-real-time traffic.

The RTP Timestamp is the absolute wall clock time when this report was sent.

The _______ packet confirms to receivers that a prolonged silence is due to departure rather than network failure.

The _________ connects different physical networks in order to provide end-to-end connectivity.

An example of servers are _________ .

An intermediary entity that acts as both a server and a client for the purpose of making requests on behalf of other clients is the ____________ .

Whereas traditional telephone networks allocate dedicated circuits for voice communications using circuit switching,VoIP uses _______,allowing the sharing of transmission capacity.

The _______ is designed to support digital and analog phones and connect to IP-based networks using VoIP,as well as provide if needed a connection to the public switched telephone network using traditional technology.

SIP supports five facets of establishing and terminating multimedia communications: user location,user availability,session setup,session management,and _________ .

The values in the __________ enable senders,receivers,and network managers to monitor conditions on the network as they relate to a particular session.

Hard real-time applications impose fewer requirements on the network,and it is therefore permissible to focus on maximizing network utilization.

_________ is the determination of the media and media parameters to be used.

With __________ ,the calling user supplies the phone number of a URI,which then triggers a set of protocol interactions resulting in the placement of the call.

Proxies are not useful for enforcing policy.

The term ___________ refers to the use of multiple forms of information,including text,still images,audio,and video.

_________ is a desirable property for real-time communication.

A ________ is a network element that receives requests in order to service them and sends back responses to those requests.

A user agent server issues SIP requests.

SIP can support any type of single media or multimedia session, including teleconferencing.