Exam 9: Communications and Networks

____ is a type of DSL that supports faster transmission rates when receiving data (the downstream rate) than when sending data (the upstream rate).

In many public locations, people connect wirelessly to the Internet through a(n) ____________________ using their mobile computers or devices.

To make collaboration possible among employees, some companies use a(n) ____________________, which provides for storage and management of a company's documents, such as word processing documents, presentations, and spreadsheets.

Home users are the primary users of Web services.

A(n) ____________________ is a temporary connection that uses one or more analog telephone lines for communications.

A(n) ____________________ is a legal agreement that allows multiple users to access software on a server simultaneously.

Figure 9-5 On a network such as the one illustrated in Figure 9-5, the central device that provides a common connection point for nodes on the network is called the ____.

____ is a real-time Internet communications service that allows wireless mobile devices to exchange messages with one or more mobile devices or online users.

Figure 9-5 On a ____, such as that illustrated in Figure 9-5, all of the computers and devices (nodes) on the network connect to a central device.

The technique of breaking a message into individual packets, sending the packets along the best route available, and then reassembling the data is called ____.

Figure 9-1 A MAN typically includes one or more WANs like those shown in Figure 9-1, but covers a smaller geographic area than a LAN.

A file server is a dedicated server that ____.

____ is a service that carries voice, data, video, and multimedia at extremely high speeds.

Infrared (IR) is a wireless transmission medium that sends signals using infrared light waves.

____ is a set of standards for digital transmission of data over standard copper telephone lines.

Case 2 The area of network communications standards is an area with which you are not familiar, so you have decided to study it in some detail. You expect to have to network a wide range of devices in the near future, so this is a timely subject of study. You are looking for a technology that will replace the requirement for a line-of-sight transmission between devices like digital cameras, fax machines, and printers, and you would also like the data transfers between the devices to occur at a rate of up to 3 Mbps. Which of the following network standards is a good match for your needs?

Users connected to a network have access to software on the network.

A(n) ____________________ is a communications device that connects multiple computers together and transmits data to its correct destination on the network.

SMS capability allows users to send and receive graphics, pictures, video clips, and sound files as well as short text messages.

In a networked environment, no authorized computer user can access data and information stored on other computers on the network.