Chapter 1, Unit 3 - Networks, Computer Concepts 2016 Chapter 9, Computer concepts chapter 8, Computer Concepts Chapter 7, Computer Concepts 2016 Chapter 6, Computer Concepts: Chapter 6, Computer concepts chapter 6, Computer Concepts chapter 5, Comput...

handshaking

2 devices on a network negotiating their communication protocols

Batch processing

A processing system that involves holding a group of transactions for processing until the end of a specified period of time.

B2G (business-to-government)

An ecommerce exchange of products, services, or information between businesses and governments.

Application specifications

Computer programs that help users perform a specific task such as word processing. Also called application programs, applications, or programs.

Data & Information:

Input (data) Output (Information) often store the data and resulting information for future use

LAN

Local Area Network - data communication networks that connect personal computers within a very limited geographical area

RF signals

Radio waves - typically used for bluetooth devices

Application development tool

Software, such as 4GLs, expert system shells, and component objects, that can be assembled into the application software for an information system.

Tier 1 Networks

Such as At&t, CenturyLink, and Verizon who own and maintain millions of dollars data communication equipment

Tier 2 Networks

Such as Comcast and Merit, pay a fee to connect to Tier 1 networks

Tier 3 Networks

Such as Midwest Cellular, Business Networks, Home Networks, and Education Institutions - end user who pays fees for connection services

Analysis phase

Tasks performed by the project team whose goal is to produce a list of requirements for a new or revised information system.

Acceptance testing

The final phase of testing for a new information system, in which the system's new owner determines whether the system performs as required.

Application testing

The process of testing newly developed application software by running unit tests, integration tests, and system tests.

Wiki:

a collaborative website that allows user to create, add to, modify, or delete the content via their browser

Hardware:

a computer contains many electric, electronic, and mechanical components

router

a device that controls the flow of data within a network

Mainframe:

a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously

Personal computer:

can perform all of its input, processing, output, and storage activities by itself and is intended to be used by one person at a time

Memory:

consists of electronic components that store instructions waiting to be executed and the data needed by those instructions

Application Software (application, app):

consists of programs designed to make users more productive and/or assist them with personal tasks

modem

contains circuitry that converts the data-carrying signals from a digital device to signals that can travel over other communication channels

Server:

controls access to the hardware, software, and other resources on a network

ARPANET

created in 1969, connected computers at UCLA, the Stanford Research Institute, the University of Utah and the University of California at Santa Barbara

User interface:

describes the way the user communicates with the computer

packet switching

divides a message into several packets that can be routed independently to their destination.

domain name

easy to remember name for the IP address like nike.com

FTP

file transfer protocol

Website:

is a collection of related webpages

ping

is a utility software designed to measure responsiveness

ethernet

is a wired network technology deployed in 1976

Internet:

is a worldwide collection of networks that connects millions of businesses, government, agencies, educational institutions, and individuals

Power supply:

is an electronic device that supplies electric energy to an electrical load

Computer definition:

is an electronic device, operating under the control of instructions stored in its own memory

protocol stack

networks that use more one set protocols

CPU (Central Processing Unit):

or microprocessor, the heart or engine of computer

domain name servers

servers that are scattered around the world that maintain lists of all domain names

Types of Storage Devices:

storage media, a computer keeps data, instructions, and information on a storage media. Storage device, records (writes) and/or retrieves (reads) items to and from storage media

Touchscreen Gestures:

tap, double tap, press and hold, drag or slide, swipe, stretch, and pinch

connection speed

the amount of data that can be transmitted in a specified time

History of computers:

the concept began in 1833 (programmable computer) combination of hardware and software

Internet infrastructure

the way networks fit together

Web pages:

the web consists of a worldwide collection of electronic documents, each of which is called a webpage

wireless channels

transport data from one device to another without the use of cables or wires

Viruses:

a malware program that, when executed, replicates by inserting copies of itself into other computer programs, data files, or the boot sector of the hard drive

User:

a person who uses or operates something, especially a computer or other machine

Programmer:

a person who writes programs for the operation of computers, especially as an occupation

Motherboard:

a print circuit board containing the principal components of a computer or other devices, with connectors into which other circuit boards can be slotted

communication protocol

a set of rules for efficiently transmitting data from one network node to another

internet governance

a set of shared protocols, procedures, and technologies that evolve through common agreement among network providers

Wi-Fi

a set of wireless networking technologies (designs consist of a mesh design or star configuration)

RAM(Random Access Memory):

allows data items to be read and written in roughly the same amount of time regardless of the order in which data items are accessed

file sharing

allows files to be accessed from computer other than the one on which they are stored

Input device:

allows you to enter data and instructions into a computer

Software:

also called a program, tells the computer what tasks to perform and how to perform them

microwaves

another option for transporting data wirelessly, but can be aimed in a single direction

node

any device on a network

dynamic IP addresses

are temporarily assigned IP address, for when the device is turned "on".

domain name system

the mechanism for tracking domain names

communication channel

the medium used to transport information from one network device to another

ICANN

the organization that supervises Internet addressing

wired channels

transport data through wires and cables

FTP:

users can transfer items to and from other computers on the Internet

B2B (business-to-business)

An ecommerce exchange of products, services, or information between businesses and consumers.

B2C (business-to-consumer)

An ecommerce exchange of products, services, or information between businesses and consumers.

DTE

Data Terminal Equipment - any device on a network

static IP Address

Devices who have a permanently assigned IP address

IPv4

Internet Protocol version 4 - uses 32 bit addresses

IPv6

Internet Protocol version 6 - uses 128 bits for each addresses

PAN

Personal Area Network - connects smart devices or consumer electronics within a range of about 30 feet

Types of Computer Users:

Personal computer, Server, and Mainframe

WAN

Wide Area Network - covers a large geographical area and usually consist of several smaller networks that connect different computers on a variety of platforms.

VoIP:

enables users to speak to other users over the internet

Social Network:

encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users

Guest network

essentially a second network that you can configure on your LAN's router

circuit switching

establishes a dedicated private link between one telephone and another for the duration of the call

Output device:

hardware component that conveys information to one or more people

ping rate

indicates how quickly data can reach a server and bounce back to you.

IPOS cycle:

information processing (Input, Process, Output, and Storage)

Digital literacy:

involves having a current knowledge and understanding of computers, mobile devices, the Internet, and related technologies

Network:

is a collection of computers and devices connected together via communications devices and transmission media

Mobile device:

is a computer device small enough to hold in your hand

Web server:

is a computer that delivers requested webpages to your computer

BitTorrent

is a file sharing protocol that distributes the role of a file serve across a collection of dispersed computers

LCD Panels (RGB):

is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals

Web (World Wide Web):

is a global library of information available to anyone connected to the internet

packet

is a parcel of data that is sent across a computer network

Operating system:

is a set of programs that coordinates all the activities among computer or mobile device hardware

network discovery

is a setting that affects whether your computer can see other devices

IP Address

is an identifiable name for a specific computer on a network often pronounced TCPIP

Browers:

is software that enables users with an Internet connection to access and view webpages on a computer or mobile device

latency

is the elapsed time for data to make a round-trip from point A to point B

Supercomputer:

is the fastest, most powerful computer

bandwidth

is the transmission capacity of a communication channel

communication network

links devices so that data and information can be shared among them

network

links things together

topology

refers to the structure and layout of network components such as computers, connecting cables, and wireless signal paths Example: Point to Point, Star, Mesh, and Bus

wireless encryption

scrambles the data transmitted between wireless devices and then unscrambles the data on devices that have the encryption key

Malware (Malicious software):

software that acts without a users knowledge and deliberately alters the computers and mobile devices operations

permissions

specify how shared files can be used