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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
Network convergence
The efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures
26
Unified communication (UC)
The integration of communication channels into a single service
27
Peer to peer (P2P)
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
Voice over IP (VoIP)
Uses IP technology to transmit telephone calls
29
Internet protocol TV (IPTV)
Distributed digital video content using IP across the Internet and private IP networks
30
Benefits of a networked world
``` 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
Challenges of a connected world
Security | Social, ethical, political issues
32
SSL certificate
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
Secure hypertext transfer protocol (SHTTP or HTTPS)
A combination of HTTP and SSL to provide encryption and secure identification of an internet server
34
Digital divide
A worldwide gap giving advantage to those with access to technology
35
Personal area networks (PAN)
Provides communication over a shirt distance that is intended for use with devices that are owned and operated by a single user
36
Bluetooth
Wireless PAN technology that transmits signals over short distances between cell phones, computers, and other devices
37
Wireless Lan (WLAN)
A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet
38
Wireless Fidelity (wi-fi)
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
Wireless Man (WMAN)
A metropolitan area network that uses radio signals to transmit and receive data
40
Worldwide interoperability for microwave access (WiMAX)
A communications technology aimed at providing high speed wireless data over metropolitan area networks
41
Wireless WAN (WWAN)
A wide area network that uses radio signals to transmit and receive data
42
Smartphone
Offer more advanced computing ability and connectivity than basic cell phones
43
Radio frequency identification (RFID)
Uses electronic tags and labels to identify objects wirelessly over short distances
44
Global Positioning System (GPS)
A satellite based navigation system providing extremely accurate position, time, and speed information
45
Geographic information system (GIS)
Consists of hardware, software, and data that provide location information for display on a multidimensional map
46
Location based services (LBS)
Applications that use location information to provide a service
47
Wireless network categories
Personal area networks Wireless LANs Wireless MAN wireless WAN
48
Business applications of wireless networks
Radio frequency identification GPS geographic information system Location based services
49
Benefits of business mobility
``` Enhances mobility Provides immediate data access Increases location and monitoring capability Improves work flow Provides mobile business opportunities Provides alternative to wiring ```
50
Challenges of business mobility
Protecting against theft Protecting wireless connections Preventing viruses on a mobile device Addressing privacy concerns with RFID and LBS
51
Telecommunication systems
Enable the transmission of data over public or private networks

MIS (12 decks)

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