Telecommunications, The Internet, And Wireless Technology (Ch #6)

Front 1

broadband

Back 1

high speed connections provided by telephone and cable TV companies that transmit 1 – 15 million bits of data per second

Front 2

network operating system (NOS)

Back 2

routes and manages communications on the network and coordinates network resources

Front 3

hub

Back 3

simple device that connects network components, sending data packets to other connected devices

Front 4

switch

Back 4

intelligent devices that filters and forwards data to a specific network destination

Front 5

router

Back 5

a communication processor used to route data packets through different networks

Front 6

packet switching

Back 6

a method of slicing digital messages into parcels called packets, sending the packets along different communication paths, and reassembling the packets at destination

Front 7

protocol

Back 7

a set of rules and procedures governing transmission of information between two points

Front 8

TCP/IP

Back 8

developed by DARPA in 70s; a common, worldwide protocol standard; TCP handles transmission - establishes connection, sequences packet transfer, acknowledges sent packets; IP handles delivery disassembles and reassembles packets

Front 9

analog signal

Back 9

continuous waveform that passes through a communications medium (voice)

Front 10

digital signal

Back 10

discrete, binary waveform (1001001001001110); electrical pulse

Front 11

Modem (modulator-demodulator)

Back 11

convert digital signals into analog signals (cable, DSL (land line network), and wireless)

Front 12

peer-to-peer

Back 12

treats all processors equally; used primarily in small networks with < 10 users; allows peripheral devices to be shared without going to a separate server

Front 13

topology

Back 13

the way LAN components are connected together

Front 14

star topology

Back 14

devices connect to single hub

Front 15

bus topology

Back 15

one station transmits signals, which travel in both directions along a sing transmission segment (most common Ethernet topology)

Front 16

ring topology

Back 16

networks connected in a closed loop(found in older LANs using Token Ring

Front 17

hertz

Back 17

measures the number of cycles per second that can be sent through a medium

Front 18

bandwidth

Back 18

difference between the highest and lowest frequencies that can be accommodated on a single channel.

Front 19

Internet Service Provider (ISP)

Back 19

commercial organization with a permanent connection to the Internet; sells temporary connections to subscribers

Front 20

Digital Subscriber Line (DSL)

Back 20

carry voice, data, and video transmissions ranging from 385 Kbps up to 40 Mbsp over existing telephone lines

Front 21

Cable Internet connection

Back 21

deliver high-speed Internet access via coaxial lines

Front 22

IP address

Back 22

unique 32-bit number assigned to every computer on the Internet

Front 23

Domain Name System (DNS)

Back 23

converts domain names to IP address

Front 24

domain name

Back 24

English-like name that corresponds to IP address

Front 25

Telnet

Back 25

logging on to one computer system and doing work on another

Front 26

IPv6

Back 26

new version of IP addressing schema, contains 128-bit addresses

Front 27

File Transfer Protocol (FTP)

Back 27

transferring files from computer to computer

Front 28

Voice over IP (VoIP)

Back 28

delivers voice information in digital form

Front 29

unified communications

Back 29

integrates disparate channels for voice and data communications, instant messaging, e-mail, and electronic conferencing into a single experience

Front 30

VPN

Back 30

a secure, encrypted, private network configured with a public network

Front 31

Point-to-Point Tunneling Protocol (PPTP)

Back 31

data packets encrypted and wrapped inside IP packets; wrapper hides content

Front 32

uniform resource locator (URL)

Back 32

web address that tells browner where to look; includes a protocol prefix, domain name, directory path, and a document name

Front 33

search engines

Back 33

software programs that search the Web for information

Front 34

search engine optimization (SEO)

Back 34

the process of improving the quality and volume of Web traffic by employing a series of techniques that help a site achieve a higher ranking with major search engines

Front 35

social search

Back 35

an effort to provide fewer, more relevant, and trustworkth search results based on network of social contacts

Front 36

shopping bots

Back 36

use intelligent agent software for searching the Internet for shopping information

Front 37

Web 2.0

Back 37

second-generation interactive Internet-based services

Front 38

blog

Back 38

personal Web site

Front 39

microblogging

Back 39

shorter posts used in Twitter

Front 40

blogosphere

Back 40

totality of blog-related Web sites

Front 41

RSS (really Simple Syndication or Rich Site Summary)

Back 41

pull specific content from Web sites and automatically feeds it to user’s computers

Front 42

Wikis

Back 42

collaborative Web sites; visitors can add, delete, modify content (Hawaiian for “quick”)

Front 43

social networking

Back 43

sites that enable users to build communities of friends and professional coclleagues

Front 44

Semantic Web

Back 44

web searches that are more productive and meaningful

Front 45

smartphone

Back 45

combines functionality of a cell phone with that of a mobile wi-fi capable laptop

Front 46

3G networks

Back 46

3rd-generation cellular network with transmission speeds ranging from 144 Kbps for mobile users and to 2 Mbps for stationary users

Front 47

4G networks

Back 47

4th-generation, packet-switched, cellular network with transmission speeds up to 100 Mbps (1 Gbps under optimal conditions)

Front 48

Bluetooth

Back 48

802.15 wireless networking standard used for creating small PANs

Front 49

personal area network (PAN)

Back 49

link several devices within a 10 meter area

Front 50

Wi-Fi

Back 50

802.11 wireless networking standard used for wireless LANs and wireless Internet access

Front 51

hotspot

Back 51

consist of one or more access points providing wireless Internet access in public space

Front 52

access point

Back 52

a box consisting of a radio receiver/transmitter and antennas that links to a wired network, router, or hub

Front 53

Worldwide Interoperability for Microwave Access (Wi-Max)

Back 53

802.16 wireless networking standard developed by IEEE to provide wireless Internet access to those without Wi-Fi or fixed broadband connectivity

Front 54

Radio Frequency Identification (RFID)

Back 54

provides technology for tracking movement

Front 55

Wireless sensor networks (WSN)

Back 55

interconnected wireless devices that are embedded into the physical environments to provide measurements of many points over large spaces