Chapter 6: Business Networks and Telecommunications Flashcards Preview

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Flashcards in Chapter 6: Business Networks and Telecommunications Deck (62)
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1

_____________ is the transmittal of data and information from one point to another.

Telecommunications

2

_________ of telecommunications allow information to be immediate and not constrained by geographical distance.

Greater efficiency

3

Another benefit of telecommunications is _________ as central storage allows both local and remote access.

Better distribution of data

4

_______ derive their names from the territories of service providers, which are divided into areas known as cells.

Cellular phones

5

People sitting in conference rooms thousands of miles apart are brought together by their transmitted images and speech in what is called _________.

videoconferencing

6

________ is a standard communication protocol to create a radio connection between two devices.

Near-field communication (NFC)

7

_______ allows anyone with access to the Internet to download one of several free applications that can locate and download files from any online computer.

Peer-to-peer (P2P) File Sharing

8

A communications _______ is the physical means that transports the signal, such as a copper wire telephone line, a television cable, or radio waves.

medium

9

The _______ of the medium is the speed at which data is communicated, which is also called the transmission rate or bit rate.

bandwidth

10

_______ is the unit of measure for bandwidth.

Bits per second (bps)

11

When a line is capable of carrying multiple transmissions simultaneously, it is said to be _______.

broadband

12

________ is a popular medium for connecting computers and networking devices because it is relatively flexible, reliable, and low cost. It consists of pairs of insulated copper wires twisted together.

Twister pair cable

13

________ is sometimes called TV cable or simply "cable" because of its common use for cable television transmission. It is widely used for links to the Internet.

Coaxial cable

14

_________ uses light instead of electricity to represent bits. These lines are made of thin fiberglass filaments.

Fiber optic technology
Optical fiber

15

_______ use radio waves to carry bits. Eg. Wi-Fi and Bluetooth.

Radio frequency (RF) technologies

16

________ are high-frequency radio waves that can carry signals over long distances with high accuracy.

Microwaves

17

________ are broadband services that are offered through power lines.

Broadband over Power Lines

18

From the point of view of organizations, among the important factors in choosing a networking medium are _______.

1. Availability
2. Current and potential bandwidth
3. Vulnerability to electromagnetic interference or radio frequency interference
4. Current and future needs for data security
5. Compatibility with an already installed network
Cost

19

In the context of data communications, a _______ is a combination of devices or nodes (computers or communications devices) connected to each other through communication media.

network

20

A computer network within a building, or a campus of adjacent buildings, is called __________.

local area network (LAN)

21

A _______ is a computer often used as a central repository of programs and files that all connected computers can use.

server

22

_______ is the ease of expanding a system.

Scalability

23

A ________ usually links multiple LANs within a large city or metropolitan region and typically spans a distance of up to 50km.

metropolitan area network (MAN)

24

A _______ is a far-reaching system of networks. It can consists of multiple LANs or MANs that are connected across a long distance. The most well-known is the Internet.

wide area network (WAN)

25

_________ provide enhanced network services. It fulfills organizational needs for reliable data communications while relieving the organization of the burden of providing its own network management and maintenance.

Value-added networks (VANs)

26

A _________ is a wireless network designed for handheld and portable devices such as smartphones and tablet or laptop computers, and is intended for use by only one or two people.

personal area network (PAN)

27

______ connects a device to a switch, bridge, or router, which connects to a LAN or WAN.

Network interface card (NIC)

28

A _______ is a common device often used as a central location to connect computers or devices to a local network.

switch

29

A ________ is a device that connects two networks, such as a LAN, to the Internet.

bridge

30

A _______ routes data packets to the next node on their way to the final destination.

router