Exam 15: Wan Technology and Protocol

For communications outside the range of a single building or a cluster of buildings,a wide area network (WAN)is employed.

________ are the switching centers in the network.

Which of the following is NOT one of the stated advantages of packet switching over circuit switching?

An advantage of packet switching over circuit switching is:

Use of digital transmission for applications such as telephone requires that a dedicated connection be established across the network.

In most networks,not every sender / receiver pair can be connected.

The choice between circuit and packet switching depends on a host of considerations,including cost,performance,reliability, and flexibility.

Two different technologies are used in wide area switched networks: circuit switching and _________ switching.

Typically,the network provider owns a set of packet-switching nodes and links these together with leased lines provided by a carrier such as AT&T.Such a network is called a ________ ,reflecting the fact that the network adds value to the underlying transmission facilities.

In the _________ approach,a preplanned route is established before any packets are sent.

Communication via circuit switching involves three phases: circuit establishment,________,and circuit disconnect.

Having multiple paths from one station to another through a network contributes to reliability.

_________ involves the process of designing and implementing the network to meet the organization's unique requirements.

The public telephone network is a good example of a circuit switched network.

Which of the following is NOT a reason for network jitter when using packet switching networks?

Which of the following is NOT one of classes of function for control signaling?

________ are the means by which the network is managed and by which calls are established,maintained,and terminated.

The heart of the call placement process for VoIP is the ___________,defined in RFC 3261,which is an application-level control protocol for setting up, modifying,and terminating real-time sessions between participants over an IP data network.

It is desirable to have only one path from sender to receiver to avoid excess costs.

Presence information is associated with every presentity in the system and is maintained by the presence service.