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MIS > Chapter 7- Networks: mobile Business > Flashcards

Chapter 7- Networks: mobile Business Flashcards

1
Q

Network

A

A communications system created by linking two or more devices and establishing a standard methodology in which they can communicate

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2
Q

Network Categories

A

Local area network
Wide area network
Metropolitan area network

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3
Q

Local area network (LAN)

A

Connects a group of computers in close proximity, such as in an office building, school, or home

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4
Q

Wide area network (WAN)

A

Spans a large geographic area such as a state, province, or country

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5
Q

Metropolitan area network (MAN)

A

A large computer network usually spanning a city

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6
Q

Internet Service Providers

A

National service providers
Network access points
Regional service providers

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7
Q

National service providers (NSPs)

A

Private companies that own and maintain the worldwide backbone that supports the internet

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8
Q

Network access points (NAPs)

A

Traffic exchange points in the routing hierarchy of the internet that connects NSPs

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9
Q

Regional service providers (RSPs)

A

Offer internet service by connecting to NSPs, but they also can connect directly to each other

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10
Q

Bandwidth

A

The maximum amount of data that can pass from one point to another in a unit of time

  • bit (bps vs BPS)
  • bit rate
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11
Q

Broadband

A

A high speed internet connection that is always connected

  • dial up
  • cable
  • digital subscriber line (DSL)
  • T1, T3 circuits
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12
Q

Networks are differentiated by:

A

Architecture
Topology
Protocols
Media

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13
Q

Architecture

A

Peer to peer, client/server

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14
Q

Topology

A

Bus, star, ring, hybrid, wireless

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15
Q

Protocols

A

Ethernet, Transmission Control Protocol/internet protocol (TCP/IP)

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16
Q

Media

A

Coaxial, twisted-pair, fiber-optic

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17
Q

Client

A

A computer that is designed to request information from a server

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18
Q

Server

A

A computer that is dedicated to providing information in response to external requests

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19
Q

Client/server networks

A

Model for applications in which the bulk of the back end processing takes place on a server, while the front end processing is handled by the clients

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20
Q

Protocol

A

A standard that specifies the format of data as well as the rules to be followed during transmission

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21
Q

Interoperability

A

The capability of two or more computer systems to share data and resources, even though they are made by different manufacturers

22
Q

Transmission Control Protocol/internet Protocol (TCP/IP)

A

Provides the technical foundation for the public internet as well as for large numbers of private networks

23
Q

Domain name system (DNS)

A

Converts IP addresses into domains

24
Q

TCP/IP applications

A

File transfer protocol (FTP)
Simple mail transfer protocol (SMTP)
Hypertext transfer protocol (HTTP)
Simple network management protocol (SNMP)

25
Q

Network convergence

A

The efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures

26
Q

Unified communication (UC)

A

The integration of communication channels into a single service

27
Q

Peer to peer (P2P)

A

A computer network that relies on the computing power and bandwidth of the participants in the network rather than a centralized server
- all computers in the network have access to the public files located on all other workstations

28
Q

Voice over IP (VoIP)

A

Uses IP technology to transmit telephone calls

29
Q

Internet protocol TV (IPTV)

A

Distributed digital video content using IP across the Internet and private IP networks

30
Q

Benefits of a networked world

A 
Sharing resources (intranet, extranet, virtual private network) 
Providing opportunities (order parts electronically reducing need for large inventories and enhancing efficiency)
Reducing travel (networks provide the means for videoconferencing)
31
Q

Challenges of a connected world

A

Security

Social, ethical, political issues

32
Q

SSL certificate

A

An electronic document that confirms the identity of a website or server and verifies that a public key belongs to a trustworthy individual or company

33
Q

Secure hypertext transfer protocol (SHTTP or HTTPS)

A

A combination of HTTP and SSL to provide encryption and secure identification of an internet server

34
Q

Digital divide

A

A worldwide gap giving advantage to those with access to technology

35
Q

Personal area networks (PAN)

A

Provides communication over a shirt distance that is intended for use with devices that are owned and operated by a single user

36
Q

Bluetooth

A

Wireless PAN technology that transmits signals over short distances between cell phones, computers, and other devices

37
Q

Wireless Lan (WLAN)

A

A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet

38
Q

Wireless Fidelity (wi-fi)

A

A means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves

39
Q

Wireless Man (WMAN)

A

A metropolitan area network that uses radio signals to transmit and receive data

40
Q

Worldwide interoperability for microwave access (WiMAX)

A

A communications technology aimed at providing high speed wireless data over metropolitan area networks

41
Q

Wireless WAN (WWAN)

A

A wide area network that uses radio signals to transmit and receive data

42
Q

Smartphone

A

Offer more advanced computing ability and connectivity than basic cell phones

43
Q

Radio frequency identification (RFID)

A

Uses electronic tags and labels to identify objects wirelessly over short distances

44
Q

Global Positioning System (GPS)

A

A satellite based navigation system providing extremely accurate position, time, and speed information

45
Q

Geographic information system (GIS)

A

Consists of hardware, software, and data that provide location information for display on a multidimensional map

46
Q

Location based services (LBS)

A

Applications that use location information to provide a service

47
Q

Wireless network categories

A

Personal area networks
Wireless LANs
Wireless MAN
wireless WAN

48
Q

Business applications of wireless networks

A

Radio frequency identification
GPS
geographic information system
Location based services

49
Q

Benefits of business mobility

A 
Enhances mobility 
Provides immediate data access
Increases location and monitoring capability 
Improves work flow
Provides mobile business opportunities
Provides alternative to wiring
50
Q

Challenges of business mobility

A

Protecting against theft
Protecting wireless connections
Preventing viruses on a mobile device
Addressing privacy concerns with RFID and LBS

51
Q

Telecommunication systems

A

Enable the transmission of data over public or private networks

MIS (12 decks)

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