Chapter 7: Telecommunications, the Internet, and Wireless Technology Flashcards Preview

Computer Information Systems 5620 > Chapter 7: Telecommunications, the Internet, and Wireless Technology > Flashcards

Flashcards in Chapter 7: Telecommunications, the Internet, and Wireless Technology Deck (65)
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1

3G Networks

Cellular networks based on packet-switched technology with speeds ranging from 144 Kbps for mobile users to over 2 Mbps for stationary users, enabling users to transmit video, graphics, and other rich media, in addition to voice.

2

4G Networks

The next evolution in wireless communication is entirely packet switched and capable of providing between 1 Mbps and 1 Gbps speeds; up to ten times faster than 3G networks. Not widely deployed in 2010.

3

Bandwidth

The capacity of a communications channel as measured by the difference between the highest and lowest frequencies that can be transmitted by that channel.

4

Blog

Popular term for Weblog, designating an informal yet structured Web site where individuals can publish stories, opinions, and links to other Web sites of interest.

5

Blogosphere

Totality of blog-related Web sites.

6

Bluetooth

Standard for wireless personal area networks that can transmit up to 722 Kbps within a 10-meter area.

7

Broadband

High-speed transmission technology. Also designated a single communications medium that can transmit multiple channels of data simultaneously.

8

Cable Internet Connections

Internet connections that use digital cable lines to deliver high-speed Internet access to homes and businesses.

9

Chat

Live, interactive conversations over a public network.

10

Digital Subscriber Line (DSL)

A group of technologies providing high-capacity transmission over existing copper telephone lines.

11

Domain Name

English-like name that corresponds to the unique 32-bit numeric Internet Protocol (IP) address for each computer connected to the Internet.

12

Domain Name System (DNS)

A hierarchical system of servers maintaining a database enabling the conversion of domain names to their numeric IP addresses.

13

E-Mail

The computer-to-computer exchange of messages.

14

File Transfer Protocol (FTP)

Tool for retrieving and transferring files from a remote computer.

15

Hertz

Measure of frequency of electrical impulses per second, with 1 Hertz equivalent to 1 cycle per second.

16

Hotspots

A specific geographic location in which an access point provides public Wi-Fi network service.

17

Hubs

Very simple devices that connect network components, sending a packet of data to all other connected devices.

18

Hypertext Transfer Protocol (HTTP)

The communications standard used to transfer pages on the Web. Defines how messages are formatted and transmitted.

19

Instant Messaging

Chat service that allows participants to create their own private chat channels so that a person can be alerted whenever someone on his or her private list is on-line to initiate a chat session with that particular individual.

20

Internet Protocol (IP) Address

Four-part numeric address indicating a unique computer location on the Internet.

21

Internet Service Provider (ISP)

A commercial organization with a permanent connection to the Internet that sells temporary connections to subscribers.

22

Internet2

Research network with new protocols and transmission speeds that provides an infrastructure for supporting high-bandwidth Internet applications.

23

IPv6

New IP addressing system using 128-bit IP addresses. Stands for Internet Protocol version 6.

24

Local Area Network (LAN)

A telecommunications network that requires its own dedicated channels and that encompasses a limited distance, usually one building or several buildings in close proximity.

25

Metropolitan Area Network (MAN)

Network that spans a metropolitan area, usually a city and its major suburbs. Its geographic scope falls between a WAN and a LAN.

26

Microblogging

Blogging featuring very short posts, such as using Twitter.

27

Modem

A device for translating a computer's digital signals into analog form for transmission over ordinary telephone lines, or for translating analog signals back into digital form for reception by a computer.

28

Network Operating System (NOS)

Special software that routes and manages communications on the network and coordinates network resources.

29

Packet Switching

Technology that breaks messages into small, fixed bundles of data and routes them in the most economical way through any available communications channel.

30

Peer-to-Peer

Network architecture that gives equal power to all computers on the network; used primarily in small networks.