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ITM > Chapter 7 > Flashcards

Chapter 7 Flashcards

2
Q

Broadband

A

This refers to high-speed data transmission in which a single cable can carry a large amount of data at once.

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3
Q

Computer Network

A
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4
Q

peer to peer network

A

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

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5
Q

Network Interphase Card (NIC)

A

expansion card inserted into a computer to enable it to connect to a network

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6
Q

Network Operating System (NOS)

A

Routes and manages comunications on the network and coordinates network resources

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7
Q

Switch or Hub

A

Connect network components, sending a packet of data to all other connected devices

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8
Q

Router

A

communications processor used to route packets of data through different networks, ensuring that the data sent gets to the correct address

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9
Q

Packet switching

A

Slicing digital messages into parcels called packets, sending the packets along different communication paths as they become available, and then reassembling the packets once they arrive at their destinations

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10
Q

Protocol

A

A set of rules and procedures governing transmission of information between 2 points in a network

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11
Q

Transmission Control Protocol / Internet Protocol

A

Dominent model for acheiving conectivity among different networks. Provides universaly agreed on method for breaking up digital messages into packets routing them to the proper address and reassembling them in coherent messages

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12
Q

Modem

A

A device for translating a computer’s digital signal into analogue form for transmission over ordinary telephone lines of for translating analog signal back into digital form for reception by a computer

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13
Q

Analogue Signal

A

Represented by a continuous waveform that passes through a communications medium and has been used for voice communication

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14
Q

Local Area Network

A

Designed to connect personal computers and other digital devices within a 500-metre radius

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15
Q

Topology

A

The way in which componants of the network are connected

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16
Q

Star Topology

A

A network topology in which all computers and other devices are connected to a central host computer. All comunications between network devices must pass through the host computer

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17
Q

Bus Topology

A

Network topology linking a number of computers by a single circuit with all messages broadcast to the entire network

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18
Q

Ring Topology

A

A network topology in which all computers are linked by a closed loop in a maner that passes data in one direction from one computer to another

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19
Q

Wide Area Network (WAN)

A

Telecomunication network that span broad geographical distances. May consist of a variety of cable, satellite, and microwave technilogies

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20
Q

Metropolitan Area Network (MAN)

A

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

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21
Q

Twisted Wire

A

consists of strands of copper wire twisted in pairs and is an older type of transmission medium

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22
Q

Coaxial Cable

A

consists of thickly insulated copper wire that can transmit a larger volume of data than twisted wire (up to 1Gbps)

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23
Q

Fiber optic cable

A

Fast, light and durable transmission medium consisting of thin strands of clear glass fibre bounded into a cable. Data are transmeted as light pulses

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24
Q

3 type of wireless network

A

cellular microwave WiFI

25
Q

Microwave

A

Both terrestrial and celestial, transmit high-frequency radio signals through the atmosphere and are widely used for high-volume, long-distance, point-to-point communication

26
Q

Herts

A

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

27
Q

Bandwidth

A

The capacity of a communication channel as measured by the difference between the highest and lowest frequencies transmited by that channel

28
Q

Internet Service Provider (ISP)

A

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

29
Q

Digital Service Provider (DSL)

A

operate over existing telephone lines to carry voice, data, and video at transmission rates ranging from 385 kbps all the way up to 9 Mbps

30
Q

Cable Internet Connection

A

digital cable coaxial lines to deliver high-speed Internet access to homes and businesses

31
Q

Internet Protocol (IP) Address

A

32-bit number represented by four strings of numbers ranging from 0 to 255 separated by periods. Indicates a unique computer location on the internet

32
Q

Domain Name System (DNS)

A

A hierarchial system of servers maintaining a database enabeling the conversion of domain names to their numeric IP address

33
Q

Domain Name

A

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

34
Q

Backbone

A

Part of a network handling the major traffic and providing the primary path for traffic flowing to or from other networks

35
Q

Internet 2

A

Research network with new protocol and transmission speed that provide an infrastructure for supporting high bandwidth internet application

36
Q

Telenet

A

Internet service / Network tool that allow someont to log on to a computer system while doing work on another

37
Q

File Transfer Protocol

A

Tools for retriving and transfering files from a remote computer

38
Q

VoIP

A

facilities for managing the delivery of voice information using the internet protocol

39
Q

Unified Communication

A

integratesdisparate channels for voice communications, data communications, instant messaging, e-mail, and electronic conferencing into a single experience where users can seamlessly switch back and forth between different communication modes

40
Q

Virtual Private Network

A

secure, encrypted, private network that has been configured within a public network to take advantage of the economies of scale and management facilities of large networks, such as the Internet

41
Q

Web Site

A

A collection of web pages linked to a home page

42
Q

Hypertext Transfer Protocol

A

The comunication standard used to transfer pages on the web. Defines how messages are formated and transmitted

43
Q

Uniform Resource Locator (URL)

A

Address of a specific resource on the internet

44
Q

Search engin Marketing

A

Use of search engines to deliver in their results sponsored links for which advertisers have paid

45
Q

Search Engine Optimization

A

The process of changing a website content, layout and format in order to increase the ranking of the site on popular search engines, and to generate more site visitors

46
Q

Inteligent Agent

A

Software program that uses a built-in or learned knowledge base to carry out specific, repetitive, and predictable tasks for an individual user, business process, or software application

47
Q

Shopping bot

A

Intelligent agent software for searching the Internet for shopping information

48
Q

Web 2.0

A

Second-generation interactive Internet-based services that enable people to colaborate, share information, and creat new services online, including mashups, blogs, RSS, and wikis

49
Q

Blogosphere

A

Totality of blog related web site

50
Q

RSS (Rich Site Summary or Really Simple Syndication)

A

Pulls specified content from Web sites and feeds it automatically to users’ computers, where it can be stored for later viewing

51
Q

Wiki

A

Collaborative website where visitors can add, delete, or modify content, including the work of previous authors

52
Q

Web 3.0

A

Future vision of the web where all digital information is woven togather with inteligent search capabilities

53
Q

Semantic web

A

Ways of making the web more “inteligent” with machine-facilitated understanding of information so that searches can be more intuitive effective, and executed using inteligent software agent

54
Q

3G network

A

Cellular network based on packet-switched technology with speed ranking from 144Kbps to 2Mbps for stationary users enabling users to transmit video, graphics, and other rich media in addition to voice

55
Q

4G Network

A

Next evolution in wireless comunication is entirely packet switched and capable of providing between 1Mbps and 1Gbps speed;

56
Q

Bluetooth

A

Wireless networking standard, which is useful for creating small personal area networks (PANs)

ITM (13 decks)

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