IS 130

small text files with unique ID tags that are embedded in a Web browser and saved on the user's hard drive.

software that secretly gathers information about users while they browse the web

form of a spyware that collects information about the user (without consent) to display advertisements in the web browser

sending fraud emails that seem to come from legit sources, such as bank or universities to capture info such as bank account numbers and SS#

monitor and record keystrokes and can be software or hardware devices

an attempt to gain access to a network by posing as authorized user to find sensitive info

unauthorized use of computer data for personal gain

a set of rules specifying the legal and ethical use of a system and the consequences of noncompliance

unsolicitied email sent for advertising purposes

are generated by web server software, record a user's actions on a web site

legal umbrella covering protections that involve copyrights, trademarks, trade secrets, and patents

registering, selling, or using a domain name to profit from someone else's trademark

networks of independent companies, suppliers, customers, and manufacturers connected via information technologies so that they can share skills and costs and have access to each other's markets

a system must prevent disclosing information to anyone who isn't authorized to access it

refers to the accuracy of info resources within an organization

computers and networks are operating and authorized users can access the info they need. It also means quick recovery in the event of system failure

ensure availablilty in the event of a system failure by using a combination of hardware and software

consists of self-propagating program code that's triggered by a specified time or event. When the program or operating system containing the virus is used, the virus attaches itself to other files, and the cycle continues

travels from computer to computer in a network but it doesn't usually erase data. Worms are independent programs that can spread themselves without having to be attached to a host program.

contains code intended to disrupt a computer, network, or web site, and it is usually hidden inside a popular program.

a type of trojan used to release a virus, worm, or other destructive code. Triggered at a certain time (birthday of a famous person) or by completing a certain event (pressing enter)

a programming routine built into a system by its designer or programmer to bypass system security and sneak back into the system later to access programs or files

a security threat that combines the characteristics of computer viruses, worms, and other malicious codes with vulnerabilites found on public and private networks

floods a network or server with service requests to prevent legitimate user's access to the system

using people skills to trick others into revealing private info.

use a physical element to enhance security measures. Unique to a person and can't be stolen, lost, copied, or passed on to others.

verifies whether a user's access is valid by logging the user off and then calling the user back at a predetermined number

combination of hardware and software that acts to filter or barrier between a private network and external computers or networks, including the internet.

can protect against both external and internal access. It's usually placed in front of a firewall and can identify attack signitures, trace patterns, generate alarms for the network administrator, and cause routers to terminate connections with suspicious sources

primarily control access to computers and networks, and include devices for securing computers and peripherals from theft

designed to protect systems from unauthorized access in order to preseve data integrity

provides a secure "tunnel" through the internet for transmitting messages and data via a private network

transforms data, called "plaintext" or "cleartext" into scrambled form called "ciphertext" that can't be read by others

commonly used encryption protocol that manages transmission security on the internet

cryptographic protocol that ensures data security and integrity over public networks, such as the internet

uses 2 keys: a pibluc key known to everyone and a private key known only to the recipient. Anyone intercepting the message can't decrypt it because they don't have the private key

the same key is used to encrypt and decrypt the message. The sender and receiver must agree on the key and keep it secret.

outlines procedures for keeping an organization operational in the even of a natural disaster or network attack

the electronic transfer of data from one location to another

the amount of data that can be tranferred from one point to another in a certain time period, usually one second

the loss of power in a signal as it travels from the sending device to the receiving device

data transmission, multiple pieces of data are sent simultaneously to increase the transmission rate

a voice-grade transmission channel capable of transmitting a maximum of 56,000 bps, so only a limited amount of info can be transferred in a specific period of time

rules that govern data communication, including error detection, message length, and transmission speed

a device that connects a user to the internet

common carrier service, is a high speed service that uses ordinary phone lines

channels connect sender and receiver devices. They can be conducted or radiated

provide a physical path along which signals are transmitted, including twisted pair cable, coaxial cable and fiber optics.

use an antenna for transmitting data through air or water

all processing is done at one central computer

each user has its own computer for performing processing tasks

maintains centralized control and decentralizes operation. Processing power is distributed among several locations

a seven-layer architecture for defining how data is transmitted from computer to computer in a network

a hardware component that enables comuters to communication over a network

connects workstations and peripheral devices that are in close proximity

span several cities, states, or even countries, and it's usually owned by several different parties

designed to handle data communication for multiple organizations in a city and sometimes nearby cities too.

represents a networks physical layout

consists of a central computer and a series of nodes

no host computer is required, because each computer manager its own connectivity

connects nodes along a network segment, but the ends of the cable arent connected are they are in a ring topology

combines computers with different processing strengths in defferent organization levels

hardware and software devide that controls data transfer from a computer to a peripheral device and vice versa

a hardware device that allows several nodes to share one communication channel

every node is connected to every other node

an industry standard suite of communication protocols that enables interoperability

a collection of binary digits, including message data and control characters for formatting and transmitting, sent from computer to computer over a network

the process of decididng which path to take on a network. This is determined by the type of network and the software used to transmit data

generating automatically by software and used to determine the best possible route for the packet

one node is in charge of selecting the path for all packets.

relies on each node to calculate its own best possible route. Each node contains its own routing table with current information on the status of adjacent nodes so that the best possible route can be followed

a network connection device containing software that connects network systems and controls traffic flow between them

requires the network routing manager to give it info about which addresses are on which network

can build tables that identify addresses on each network

software runs on the local computer and communicates with the remote server to request info or services

a client communicates directly with the server

attempts to balance the workload between clients and server by removing application processing from both the client and server and placing it on a middle-tier server

a network that uses wireless instead of wired technology

operates on a radio frequency consisting of radio cells, each seved by a fixed transmitter known as a cell site or base station

the amount of data transferred or processed in a specified time, ususally one second

divides each channel into six slots to improve efficiency and quality of digital communication

transmits multiple encoded messages over a wide frequency and then decodes them at the receiving end

refers to integrating voice, video, and data so that multimedia info can be used for decision making

a worldwide collection of millions of computers and networks of all sizes

the begining of the internet

foundation network linked with fiber-optic cables that can suppot very high bandwidth. It is made up of many interconnected government, academic, commercial, and other high-capacity data routers

include embedded references to audi, text, images, video, and other documents

consist of links users can click to follow a particular thread

maintain lists of computers and websites addresses and their associates IP addresses

identify a web page. The address of a document or site on the internet

the language used to create web pages. Defines a page's layout and appearance by using tags and attributes. A tag delineates a section of the page, such as the header and body

used to travel from site to site

indexes of info based on keyworkds in documents, making it possible for search engines to find what you're looking for

information system that enable users to retrieve data from the web by searching for info using search items

usually for exchanging opinions and ideas on a specific topic, usually of a technical or scholarly nature.

more general in nature and can cover any topic

enables users in chat rooms to exchange text messgaes with people in other locations in real time

private chat room on the internet

using the internet rather than the telephone network to exchange spoken conversations

used for telephony

network within an organization that uses internet protocols and technologies

a secure network that uses the internet to connect intranets of business partners so that communication between organizations is possible

refers to the trend toward web applications that are more interactive than traditional web applications.

a journal or newsletter that's updated frequently and intended for the general public. Blogs reflect their authors' personalities and often include philosophical reflections and opinions on social or political issues

website that allows users to add, delete, and sometimes modify content

refers to a broad class of websites and services that allow users to connect with friends, family, and colleagues

fast, easy way to distribute web content in XML format. Its a subscription service you sign up for and new content from websites you've selected is delivered via a feed reader to one convenient spot

an electronic audio file such as an MP3 file that's posted on the web for users to download to their mobile devices

a collaborative effort involving more than 200 US universities and corporations to develop advanced internet technologies and applications for higher education and academic research

a local connection point-of-presence that connects a variety of high-performance networks and its main function is the exchange of 12 traffic with a specified bandwidth