9

16 Jan

1. With ___[A]__, users can view message details such as the
length of calls and, in some cases, read message contents
instead of listening to them. (467)
a. Web services b. Internet telephony
c. visual voice mail d. video messaging

2. When an online meeting takes place on the Web, it is
called ___[C]__. (468)
a. video messaging b. a peer-to-peer network
c. a Web conference d. a Web meeting

3. A document management system __[C]___. (468)
a. allows users to share documents b. provides personal information
with other users in real time manager functions

c. provides for storage and management d. prints to a Web address associated
of a company’s documents with a particular printer

4. A ___[D]__ is a Web application that combines services from
two or more sources, creating a new application. (469)
a. document management system b. peer-to-peer network
c. Web service d. mashup

5. __[B]___ are devices that provide a common central
connection point for nodes on the network. (476)
a. Packets and tokens b. Hubs and switches
c. T1 and T3 lines d. Routers and digital modems

6. ___[A]__ is a standard, specifically a protocol, that defines
how a network uses radio signals to communicate with
a tag placed in or attached to an object, an animal, or a
person. (481)
a. RFID b. WiMAX
c. Bluetooth d. UWB

7. __[D]___ consists of a single copper wire surrounded by at
least three layers. (493)
a. Fiber-optic cable b. Infrared
c. Twisted-pair cable d. Coaxial cable

8. ___[B]__ is a service that provides television programs over
the cellular network. (495)
a. Cellular radio b. Mobile TV
c. Video messaging d. UWB

(T) 1. A communications channel is the media on which data, instructions, or information travel. (460)
(F) 2. With video messaging, users can send short video clips, usually about 15 minutes, in addition to all picture messaging
services. (464)
(T) 3. A network is a collection of computers and devices connected together via communications devices and
transmission media. (470)
(F) 4. A local area network (LAN) is a network that covers a large geographic area using a communications channel that
combines many types of media such as telephone lines, cables, and radio waves. (472)
(T) 5. A Web server is a computer that delivers requested Web pages to your computer. (474)
(T) 6. An intranet is an internal network that uses Internet technologies. (477)
(F) 7. The 40-Gigabit Ethernet standard is the fastest of the Ethernet standards. (478)
(T) 8. Bluetooth does not require line-of-sight transmission. (480)
(F) 9. At distances of 10 meters (about 33 feet), the data transfer rate for UWB devices is 480 Mbps. (480)
(T) 10. Fiber to the Premises (FTTP) uses fiber-optic cable to provide extremely high-speed Internet access to a user’s
physical permanent location. (484)
(T) 11. Latency is the time it takes a signal to travel from one location to another on a network. (491)

_____ 1. picture messaging (464)e. allows users to send pictures and sound files, as well as short text messages,
to a phone or other mobile device, or a computer

_____ 2. groupware (467)j. software that helps groups of people share information over a network

_____ 3. extranet (477)h. allows customers or suppliers to access part of a company’s intranet

_____ 4. IrDA (480)d. specification to transmit data wirelessly among computers and devices via
infrared light waves

_____ 5. ATM (485)f. service that carries voice, data, video, and multimedia at very high speeds

_____ 6. dial-up modem (485)a. communications device that can convert digital signals to analog signals
and analog signals to digital signals, so that data can travel along an analog
telephone line

_____ 7. digital modem (486)g. communications device that sends and receives data and information to and
from a digital line

_____ 8. bandwidth (491)b. amount of data, instructions, and information that can travel over a
communications channel

_____ 9. transmission media (491)c. materials or substances capable of carrying one or more signals

_____ 10. noise (493)i. electrical disturbance that can degrade communications

l. What is text messaging? capability allows users to send and receive short
text messages, typically fewer than 300 characters,
on a phone or other mobile device or computer

What are some options for sending and receiving text messages? • Mobile to Mobile: send a message from your
mobile device to another mobile device

• Mobile to E-Mail: send a message from your
mobile device to an e-mail address anywhere
in the world

• Web to Mobile: send a message from a text
messaging Web site to a mobile device, or
request that a Web site alert a mobile device
with messages of breaking news and other
updates, such as sports scores, stock prices,
and weather forecasts

• Mobile to Provider: send a message by entering
a common short code (CSC), which is a four- or
five-digit number assigned to a specific content
or wireless service provider, followed by the
message, such as a vote for a television program
contestant or an entry for a sweepstakes

2. Describe how the global positioning system (GPS) works. A global positioning system (GPS) is a
navigation system that consists of one or more
earth-based receivers that accept and analyze
signals sent by satellites in order to determine
the receiver’s geographic location

How do individuals use GPS technology? The first and most used application of GPS
technology is to assist people with determining
where they are located. The data obtained from

3. How are a local area network (LAN), a metropolitan area
network (MAN), and a wide area network (WAN) different? they differ by the size of area they cover.
LAN cover a limited area.such as: building, a company, etc.
MAN cover a bigger area then LAN. such as: city, town, and such.
WAN cover a yet bigger area. such as: city, country, or the world, even.

What is a wireless LAN? LAN connection without physical wire.

4. What is a network topology? A network topology refers to the layout of
the computers and devices in a communications
network.

What are the five types of digital dedicated lines? ISDN lines, DSL, FTTP, T-carrier lines, and ATM.

5. What are three different types of digital modems? Three types of digital modems are ISDN modems, DSL modems, and cable modems.
How does each one function?

An ISDN modem sends digital data and information from a computer to an ISDN line
and receives digital data and information from an ISDN line.

A DSL modem sends digital data and information from a computer to a DSL line
and receives digital data and information from a DSL line.

A cable modem, sometimes called abroadband modem, is a digital modem that sends
and receives digital data over the cable television (CATV) network.

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