41 terms

Ch. 7 MIS

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Telecommunication system
Enable the transmission of data over public or private networks
Network
A communications system created by linking two or more devices and establishing a standard methodology in which they can communicate
Local Area Network (LAN)
Connects a group of computers in close proximity, such as in an office building, school, or home
Wide Area Network (WAN)
Spans a large geographic area such as a state, province, or country
Metropolitan Area Network (MAN)
A large computer network usually spanning a city
National Service Providers (NSPs)
Private companies that own and maintain the worldwide backbone that supports the internet
Network Access Points (NAPs)
Traffic exchange points in the routing hierarchy of the internet that connect NSPs
Regional Service Providers (RSPs)
Offer internet service by connecting to NSPs, but they ask can connect directly to each other
Bandwidth
The maximum amount of data that can pass from one point to another in a unit time; bit (bps vs BPS) and bit rate
Broadband
A high speed internet connection that is always connected; cable, DSL vs ADSL, T1, T3 circuits
Architecture
peer-to-peer and client/server
Topology
bus, star, ring, hybrid, wireless
Protocols
Ethernet, Transmission control protocol.internet protocol (TCP/IP)
Media
Coaxial, twisted pair, fiber optic
Client
A computer that is designed to request information from a server
Server
A computer that is dedicated t providing information in response to external requests
Client/server network
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
Protocol
A standard that specifies the format of data as well as the rules to be followed during transmission
Interoperability
The capability of 2 or more computer systems to share data and resources, even though they are made by different manufacturers
TCP/IP
Provides the technical foundation for the public internet as well as for large numbers of private networks
Domain name system
Converts IP addresses into domains
Networks convergence
Efficient coexistence of telephone, video and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures
Unified communications
The integration of communication channels into a single service
Peer to peer
A computer network that relies on the computing power and bandwidth of the participants in the network rather than a centralized server
Voice over IP
Uses IP technology to transmit telephone calls
Internet protocol TV
Distributes digital video content using IP across the internet and private IP networks
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
SHTTP/HTTPS
A combination of HTTP and SSL to provide encryption and secure identification of an internet server
Digital divide
A worldwide gap giving advantage to those with access to technology
Personal Area Networks (PAN)
Provides communication over a short distance that is intended for use with devices that owned and operated by a single user
Bluetooth
Wireless PAN technology that transmits signals over short distances between cell phones, computers, and other devices
Wireless LAN (WLAN)
A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet
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
Wireless MAN (MAN)
A metropolitan area network that uses radio signals to transmit and receive data
WiMAX
A communications technology aimed at providing high speed wireless data over metropolitan area networks
Wireless WAN (WWAN)
A wide area network that uses radio signals to transmit and receive data
smartphone
Offer more advanced computing ability and connectivity than basic cell phones
Radio frequency identification (RFID)
Uses electronic tags and labels to identify objects wirelessly over short distances
Global Positioning system (GPS)
a satellite based navigation system providing extremely accurate potion, time, and speed information
Geographic information system (GIS)
Consists of hardware, software, and data that provide location information for display on a multidimensional map
Location based services (LBS)
Applications that use location information to provide a service
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