Final Flashcards
Compare and contrast the two major types of networks
LAN (local area networks): limited geographical area and composed of one communications medium
WAN (wide area networks): broad geographical area and composed of multiple communication medias
Twisted-pair wire
most prevalent form of communications wiring, consists of strands of copper wire twisted in pairs, inexpensive, widely available, easy to work with , slow to transfer data, subject to interference, easily tapped by unintended recipients
coaxial cable
insulated copper wire, much less susceptible to interference and can carry more data, more expensive and harder to deal with than twisted pari wire
fibre-optic cables
consists of thousands of very thin filaments of glass fibers that transmits info by way of pulses of light from lasers. smaller than tradition cables also transmit more data, often used as a backbone for a network
Describe the most common methods for accessing the Internet
dial-up, DSL, cable modem, satellite, wireless, and fibre to the home.
impact that discovery network applications have had on business and everyday life
Discovery involves browsing and information retrieval, and provides users the ability to view information in databases, download it, and process it. Discovery tools include search engines and portals. Discovery tools enable business users to efficiently find needed information.
Explain the impact that communication network applications have had on business and everyday life.
Networks provide fast, inexpensive communications, through email, call centres, chat rooms, voice communications, and blogs. Communications tools provide business users with a seamless interface among team members, colleagues, business partners, and customers
Telecommuting
the process whereby knowledge workers are able to work anywhere and any time. Telecommuting provides flexibility for employees, with many benefits and some drawbacks.
Explain the impact that collaboration network applications have had on business and everyday life
Collaboration refers to mutual efforts by two or more entities (individuals, groups, or companies) that work together to accomplish tasks. Collaboration is enabled by workflow systems. Collaboration tools enable business users to collaborate with colleagues, business partners, and customers
Explain the impact that educational network applications have had on business and everyday life. (E learning and virtual universities)
E-learning refers to learning supported by the Web. Distance learning refers to any learning situation in which teachers and students do not meet face to face. E-learning provides tools for business users to facilitate their lifelong learning aspirations.
Virtual universities are online universities in which students take classes on the Internet at home or an offsite location. Virtual universities make it possible for students to obtain degrees while working full time, thus increasing their value to their firms
Affinity portal
A website that offers a single point of entry to an entire community of affiliated interests
Backbone networks
High-speed central networks to which multiple smaller networks (e.g., LANs and smaller WANs) connect.
Bandwidth
The transmission capacity of a network, stated in bits per second.
broadband
Broadcast media (wireless media)
Communications channels that use electromagnetic media (the “airwaves”) to transmit data
Cable media (wireline media)
Communications channels that use physical wires or cables to transmit data and information.
Browsers
Software applications through which users primarily access the Web.
client/server computing
Form of distributed processing in which some machines (servers) perform computing functions for end-user PCs (clients).
Computer network
A system that connects computers and other devices through communications media so that data and information can be transmitted among them.
Crowdsourcing
A process in which an organization outsources a task to an undefined, generally large group of people in the form of an open call.
Distributed processing
Network architecture that divides processing work between or among two or more computers that are linked together in a network.
Enterprise network
An organization’s network, which is composed of interconnected multiple LANs and WANs
File server
A computer that contains various software and data files for a local area network as well as the network operating system
business to business electric commerce
the sellers and the buyers are businesses.
business to consumer electric commerce
the sellers are organizations and the buyers are individuals
consumer to consumer electric commerce
an individual sells products or services to other individuals.
Business to employee electric commerce
an organization uses EC internally to provide information and services to its employees.
E-government electric commerce
the use of Internet technology in general and e-commerce in particular to deliver information and public services to citizens (called government-to-citizen or G2C EC) and business partners and suppliers (called government-to-business or G2B EC)
Mobile commerce
e-commerce that is conducted entirely in a wireless environment.
Social commerce
the delivery of electronic commerce activities and transactions through social computing.
Conversational commerce
electronic commerce using messaging and chat apps to offer a daily choice, often personalized, of a meal, product, or service.
Fintech
an industry composed of companies that use technology to compete in the marketplace with traditional financial institutions and intermediaries in the delivery of financial services, which include banking, insurance, real estate, and investing.
Online securities training
involves buying and selling securities over the web
Sell-side marketplace
organizations attempt to sell their products or services to other organizations electronically from their own private e-marketplace website or from a third-party website
buy-side marketplace
organizations attempt to buy needed products or services from other organizations electronically
e-marketplaces (public exchanges)
Public exchanges are open to all business organizations. They are frequently owned and operated by a third party. There are three basic types of public exchanges: vertical, horizontal, and functional. Vertical exchanges connect buyers and sellers in a given industry. Horizontal exchanges connect buyers and sellers across many industries. In functional exchanges, needed services such as temporary help or extra office space are traded on an as-needed basis
Multi channeling
A process in which a company integrates its online and offline channels.
public exchanges (or exchanges)
Three main types of wireless transmission media
Microwave transmission
Satellite transmission
Radio transmission
Microwave transmission
used for high-volume, long-distance, line-of-sight communication. One advantage is the high volume. A disadvantage is that microwave transmissions are susceptible to environmental interference during severe weather such as heavy rain and snowstorms.
Satellite transmission
make use of communication satellites, and they receive and transmit data through line-of-sight. One advantage is that the enormous footprint—the area of Earth’s surface reached by a satellite’s transmission—overcomes the limitations of microwave data relay stations. Like microwaves, satellite transmissions are susceptible to environmental interference during severe weather.
Radio transmission
use radio-wave frequencies to send data directly between transmitters and receivers. An advantage is that radio waves travel easily through normal office walls. A disadvantage is that radio transmissions are susceptible to snooping by anyone who has similar equipment that operates on the same frequency.
Short-range wireless network
simplify the task of connecting one device to another, eliminating wires, and enabling people to move around while they use the devices. In general, short-range wireless networks have a range of 30 m (100 ft) or less. Short-range wireless networks include Bluetooth, ultra-wideband, and near-field communications. A business application of ultra-wideband is the PLUS Real-Time Location System from Time Domain. Using PLUS, an organization can locate multiple people and assets simultaneously.
Medium-range wireless network
include Wi-Fi networks. Wi-Fi provides fast and easy Internet or intranet broadband access from public hotspots located at airports, hotels, Internet cafés, universities, conference centres, offices, and homes
wide-area wireless network
connect users to the Internet over geographically dispersed territory. They include cellular telephones and wireless broadband. Cellular telephones provide two-way radio communications over a cellular network of base stations with seamless handoffs. Wireless broadband has a wireless access range of up to 50 km (30 miles) and a data transfer rate of up to 75 Mbps. WiMAX can provide long-distance broadband wireless access to rural areas and remote business locations.
Five major-m commerce applications
location-based
mobile finance applications
intrabusiness applications
accessing information
telemetry
location-based services
provide information specific to a location.
mobile finance applications
include banking, wireless payments and micropayments, money transfers, wireless wallets, and bill payment services. The bottom line for mobile financial applications is to make it more convenient for customers to transact business regardless of where they are or what time it is.
intrabusiness applications
consist of m-commerce applications that are used within organizations. Companies can use non-voice mobile services to assist in dispatch functions—that is, to assign jobs to mobile employees, along with detailed information about the job.
accessing information
mobile portals and voice portals are designed to aggregate and deliver content in a form that will work within the limited space available on mobile devices. These portals provide information anywhere and any time to users.