Exam 2: Communications Networks the Internet and the World Wide Web

Summarize the steps in the process illustrated by the accompanying figure to describe how data travels over the Internet.

For telephone lines to carry data, a communications device called a(n) ____ like the one in the accompanying figure is used to convert digital signals to analog signals.

Voice over IP allows users to speak to other users over the Internet using their desktop computer, mobile computer, or mobile device.

To network computers and devices that span multiple rooms or floors in a home, as shown in the accompanying figure, it may be more convenient to use a ____ network.

DSL can provide Internet access from 25 to 150 times faster than dial-up access.

Once a chat client has been installed, conversations can be created or joined on a chat server.

To start a chat session, a user is connected to a chat server through a chat ____, which is a program on the computer.

____________________ enables a user to listen to the sound file from a Web page as it downloads to a computer.

A local area network (LAN) covers a large geographical region, such as a school, office building, or group of buildings. _________________________

A(n) ____ is a collection of files including text, graphics, audio, video, and program files.

A ____, which is similar to a book cover or table of contents, provides information about the purpose and content of a collection of Web pages.

Most Web pages contain ____, which are built-in connections to other related Web pages.

A ____ is the path that data follows as the data is transmitted as shown in the accompanying figure.

____________________ means that chat users and the people with whom they are conversing are online at the same time.

In the theory known as signal convergence, every mass medium eventually merges into one medium due to the advent of new communications technologies.

Critical Thinking Questions Case 2-2 In your role as media specialist for the school, you are trying to determine what form of multimedia would best meet the needs of your students in various circumstances. Which of the following multimedia formats would be the best to use for students who missed a lab on frog dissection?

Fees for using an online service usually are slightly lower than fees for an ISP.

A ____ is a computer that delivers requested Web pages.

When using Internet telephony, the spoken words are converted to analog signals. _________________________

Modified Multiple Choice A basic communications system consists of ____.