cis lecture 4

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what is application sofware?: programs designed to make users more productive
how is software distributed?: -packaged software
-custom software
-freeware
-shareware
programs that control the operations of the computer is called...?: system software
software that assists people in becoming more effective and efficient is called...?: business software
what is a software suite and its advantages?: a collection of individual programs sold as a single package

*lower cost & ease of use
what is project management software?: allows you to plan, schedule, track and analyze the events,resources, and cost of a project
what is accounting software?: helps companies record and report their financial transactions
what is enterprise computing software?: large organizations require special computing solutions
-each functional unit has specialized software requirements
what is web page authoring software?: allows users of all skill levels to create web pages
what software facilitates communication?: email, FTP, web browsers, chat rooms, news group, instant messaging
what is a ASP?: Application Service Provider
1. third party organization that manages and distributes software and services on the web

2.allows companies to outsource information technology needs
what is web based training?: self directed, self paced instruction on a topic on the web
what is system software and what 2 types are there?: programs that maintain operation of a computer

1.operating system
2.utility programs
what are 4 funtions of the operating system?: -start the computer
-provide a user interface
-manage programs
-manage memory
what is a cross platform application?: runs identically on muliple operating systems
what is booting and what are the two types?: process of starting and restarting a computer
-Cold Boot: turning on computer that has been powered off

-warm boot: restarting computer that is powered on
what is a recovery disk? backup utility?: -contains system files that will start computer when computer cannot boot

-copies selected files or entire hard disk onto another disk or tape
what is a user interface? graphical user interface?: -controls how you enter data and instructions and how information displays on screen

-user interacts with menus and visual images such as icons and buttons
what is memory management?: optimizing use of random access memory
what is spooling?: sending print jobs to buffer instead of directly to printer
what is device driver?: program that tells operating system how to communicate w/ device
this operating system automatically cionfigures new devices as you install them...?: plug and play
this assesses and reports information about system resources and devices?: performance monitor
what is a network operating system?: allows users to share printer, internet access, files and programs on a network
what is utility program?: system software that performs maintenace type tasks
what is a personal firewall?: detects and protects a personal computer from unauthorized intrusions
what is a disk defragmenter?: recognizes files and unused space on hard disk so programs run faster
what are some characteristics of operating systems?: device dependent, device independent, downward compatible, upward compatible, proprietary software
what are 3 categories of operating systems?: embedded, network, stand alone
what is a DOS? why is is hardly used today?: Disk Operating System
-developed in early 1980s for PC

-does not offer a GUI, it used command line interface when first developed
what is windows XP? what are the 5 editions that it is offered as?: microsofts fastest and most reliable windows operating system

1.Home edition
2.Professional edition
3.Tablet PC
4.Media Center Edition
5.64 -Bit edition
what is a Mac OS X?: available only for computers manufactured by Apple
what is a UNIX?: -used by power users because of its flexibility and power

-both a stand alone and operating system
what is a Linux?: -popular, free, multi tasking UNIX type operating system
what are examples of networking operating systems?: -netware, solaris, unix/linux, windows server 2003
what are 2 operating systems for PDAs?: -windows mobile: for pocket PC

-Palm OS: for palm, visor, and CLIE
what is a Symbion OS?: open source, multi-tasking operating system designed for smart phones
what are file compression utility? what are 2 popular utiliteis?: shrinks size of files to free up room and performance
-PKZIP and WinZIP
what are computer communications?: process in which 2 or more computers or devices transfer information, data, and instructions
what are some uses of the internet communication?: chat rooms, email, instant messaging, web, FTP, newsgroups
what is a network?: collection of computers and devices connected via communication devices and transmission media
what is a LAN?: Local Area Network
-network in limited geographical area such as home or office
what is WAN? what is the world's largest network?: Wide Area Network
-network that covers large geographic area

-Internet
what is a client/server network?: one or more computers act as a "server" and other computers or "clients" access server
what is a peer to peer network?: simple network that connects fewer than 10 computers....each has equal capabilities
what is internet peer to peer (P2P)?: enables users to connect to each others hard disks and exchange files directly
what is a bus network? What are the 3 popular topologies?: all computers connect to central cable or bus
-bus, ring, and star
what is a ring network?: cable forms closed ring, or loop, with all computers and devices arranged along ring

*data travels from device to device around entire ring, in one direction
what is a star network?: all devices connect to a central device called a hub.
-all data transferred from one computer to another passes thru the hub
what is an intranet?: 1.internal network that uses internet technologies

2.makes information accessible to employees

3.typically includes connection to internet
what is an extranet?: allows customers or suppliers to access part of the company's inranet
what is a token ring and ethernet?: -technology controls access to network by requiring devices to pass a special signal calld a token

-technology allows computers to contend for access to network
what is TCP/IP and 802.11?: Transmission Control Protocol/ Internet Protocol
-technology transmits data by breaking it up into small pieces, or packets

-is family of standards for wireless LANs (ex. transfer rates)
what is a blue tooth?: short- range radio waves transmit data between bluetooth devices
what are IrDA, RFID, and Wireless Application Protocol (WAP)?: -specification allows data to be transferred wirelessly via infared light waves

-Radio Frequency Identification uses radio signals to communicate with a tag placed in an object

-wireless application protocol allow wireless mobile devices to access internet
what is a dial- up line?: temporary connection using telephone line for communications
what is a dedicated line?: always on connection between two communication devices
what is a dial up modem?: converts digital signals to dial up signals and vice versa
what is a cable modem?: sends and recieves data over cable tv network and is faster than dial up
what is wireless modem?: allows access to the web wirelessly from a notebook computer, a PDA, a smart phone, or other mobile devices
what is a network card?: adapter card, pc card, or or compact flash card that enables computer or device to access network
what is wireless access point?: central communicatons device that allows computers and devices to transfer data wirelessly amoung themselves or to wired network
what is a router?: connects computers and transmits data to correct to correct destination on network
what is a hub?: -device that provides central point for cables
what is a home network? what are 3 types of home networks?: multiple computers connected in home

-ethernet, powerline cable, home radio frequency
what is a communication channel? what is bandwidth?: transmission media in which data travels in communications system
-is amount of data that can travel over channel
what is physical transmission media?: wire, cable, and tangible materials used to send communications signals
what are twisted pair cable and coaxial cable?: -used for telephone systems and networking cables

-often used for cable tv wiring
what is fiber optic cabling?: -cable of carrying more data at faster speeds than wire cables
what is wireless trasmission media?: used when inconvenient, impracticle, or impossible to install cables

*includes Bluetooth and IrDA

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