Exam 1: Data Communications, data Networks,

Enterprises have formed ________ to reach customers,suppliers,and partners while isolating their proprietary information from unwanted access.

The increasing use of optical fiber,while greatly increasing capacity,has caused an increase in transmission prices as well.

There are no fundamental differences among data,voice,and video communications.

A network in which small chunks of data are passed through the network from node to node,and at each node the entire data chunk is received,stored briefly,and then transmitted to the next node,is a ________ network.

Growth in services and growth in traffic capacity go hand in hand.

The Internet evolved from the ________ which was developed in 1969 by the Advanced Research Projects Agency of the U.S.Department of Defense.

Changes in corporate data traffic patterns are driving the creation of high-speed WANs.

The key elements of a simple communications model are ________.

The place where telephone companies terminate customer lines and locate switching equipment to interconnect those lines with other networks is the ________.

In a ________ network,a dedicated communications path is established between two stations through the nodes of the network.The telephone network is the most common example.

There are several fundamental differences between data processing and data communications.

Once an interface is established ________ is required for communication.

________ is the process of squeezing the data down so that a lower capacity, cheaper transmission facility can be used to meet a given demand.

Using fixed length packets and sometimes referred to as cell relay,________ is a culmination of developments in circuit switching and packet switching.It is so efficient that it can offer a constant data rate channel even though it is using a packet switching technique.

It is not necessary for a device to interface with the transmission system in order to communicate.

An ________ uses Internet and Web technology in an isolated facility internal to an enterprise.

Recent offerings of ________ multiplexing enable capacities of many terabits per second for long-distance telecommunication and data network links.

A modem is required to establish communication between a workstation and a server over a public telephone network.

Effective and efficient data communication and networking facilities are vital to any enterprise.

Frame relay networks are commonly used for terminal-to- computer and computer-to-computer communications.