AP CSP - Unit 6 Vocab

social media

applications and websites that allow users to share content and participate in social networking that may have otherwise had socioeconomic barriers

socioeconomic

the differences among groups based on geographical, social and economic factors

search tools

directories and search engines on the Internet that are essential for finding information efficiently on the Web

crowdfunding

entrepreneurs using online access to customers as a means of funding their project

metadata

data about data

cloud computing

storing, accessing and processing data using remote servers over a network rather than a local server or computer

client-server model

the client(s) are the end-user(s) and communicates with the server (a centralized computer) that services the clients

Internet

the network infrastructure composed of devices (or nodes) that communicate via protocols

network

connection of devices and networks to communicate using addresses and protocols

routing

the process of moving information (or packets) over a network via a device called a router

bandwidth

a measure of bit rate of a system or data (measured in bits) that can be sent in a fixed amount of time over a system

latency

the time elapsed between the transmission and the receipt of a request in a system

routing redundancy

having multiple options between two points increases the reliability of the Internet and helps it scale to more devices and more people

WWW (World Wide Web)

a system of linked pages, programs, and files that uses the internet in order to transmit content

SMTP protocol

Email communication standard developed and overseen by the Internet Engineering Task Force (Simple Mail Transfer Protocol)

HTTP

Hypertext Transfer Protocol developed by the Internet Engineering Task Force, this protocol determines how data and messages are formatted, transmitted, and responded to via the Internet

HTTPS

HTTP with a Secured Socket Layer (SSL) or Transport Layer Security (TLS) as a sublayer that encrypts and decrypts user data and requests for added security (Hypertext Transfer Protocol Secure)

Internet protocol

the protocol by which data is sent from one computer to another on the Internet

TCP/IP

standard for packets and routing (Transmission Control Protocol/Internet Protocol)

SMS

Short Message Services. Text messaging allows the user to send up to 160 characters to another device. If the message is longer it may truncate, concatenate and/or split up into several individual messages

interface

a user-friendly picture-oriented way to interact with technology, contributing to the widespread use of the Internet

protocols

a common set of rules that computers must abide by in order to connect with each other. The protocols used in the Internet are open, which allows users to easily connect additional computing devices to the Internet

Application Program Interfaces (APIs)/Libraries

a set of routines, protocols, and tools for building software applications which simplify complex programming tasks

IP address

a unique numeric identification for each device that is connected to a computer network and uses Internet Protocol

IPv6

Internet Protocol, Version 6 - 128-bit Internet address consisting of eight 4-character hexadecimal numbers to handle routing of many more devices.

IPv4

Internet Protocol, Version 4 - A 32-bit Internet address consisting of four numbers each between 0 through 255, separated by periods (represents 8 bits).

domain

a group of devices connected on a network using the same protocol to access and administer web pages.

domain name system [DNS]

the way that domain names are located and translated into Internet Protocol (IP) addresses.

hierarchy

an arrangement of elements in a ranking of superiority. The Internet and systems are built from the top (root) down.

packet switching

digital data is sent by breaking the data into blocks of bits called packets, which contain both the data being transmitted and control information for routing the data.

data stream

Information is passed through the Internet as a data stream. Data streams contain chunks of data, which are encapsulated in packets.

encryption

the process of converting information or data into a code, especially to prevent unauthorized access.

decryption

the process of decoding the data that was encrypted

symmetric key system

an encryption method where each pair of users share a secret key

asymmetric key system

an encryption method that uses different keys to encrypt and decrypt

public-key encryption

an asymmetric encryption method that uses a public key (made available publicly) and a private key (available to owner only).

certificate authorities

CA's issue digital certificates that validate ownership of encrypted keys used in secured communications and are based on a trust model.

trust model

validation of one's identity necessary for an event or transaction to occur.

open platforms: software based on open standards where there is no single ownership and is freely available through open license.

closed platforms

proprietary software where the provider has control over the application and content and can restrict access

open standard

a standard where documentation and specifications are open to the public.

closed standard

a standard where documentation and specifications are not available to the public.

open source

publicly available information that is free to use, distribute, modify, and study.

closed source

privately owned information that is proprietary.

Secure Sockets Layer (SSL)

The standard security technology for establishing an encrypted link between a web server and a browser, typically indicated with padlock icon in the address bar.

net neutrality

the Internet is built around the notion of free and open access to information with no blocking, no throttling or paid prioritization.

cybersecurity

measures taken to protect a computer or computer system against unauthorized access or attack

confidentiality

the ability to limit access to information to a certain set of users.

integrity

the certainty that information is accurate

availability

the reliability of access to information

firewall

part of a computer system or network that is designed to block unauthorized access while permitting outward communication.

DDoS Attack

Distributed Denial of Service - an attempt to make an online service unavailable by overwhelming it with traffic from multiple sources.

viruses

code that is capable of copying itself and corrupting a system or destroying data

social engineering

the psychological manipulation of people into performing actions or divulging confidential information

malware

software that is intended to damage or disable computers and computer systems.

phishing

obtaining confidential information by masquerading as an "official" person, site, or entity. A form of social engineering

Tim Berners-Lee

created the set of fundamental tools and technologies that make up the World Wide Web

hyperlinks

clickable bits of text, images or other screen elements within an HTML document that a user can select to request another document or web location.

sequential computing

is a computational model in which operations are performed in order one at a time.

parallel computing

is a computational model where the program is broken into multiple smaller sequential computing operations, some of which are performed simultaneously.

distributed computing

is a computational model in which multiple devices are used to run a program

botnets

a network of private computers infected with a malicious software and controlled as a group without the owners knowing.

bitcoin mining

the processing of transactions in the digital currency system, in which the records of current Bitcoin transactions, known as blocks, are added to the record of past transactions, known as the blockchain.

Internet of Things

the network of physical devices, vehicles, home appliances and other items embedded with electronics, software, sensors, actuators, and connectivity which enables these objects to connect and exchange data.

sensor networks

autonomous sensors that measure environmental conditions such as light, temperature and sound which facilitate new ways of interacting with the environment and with physical systems.

autonomous technology

technology that can function without being told what to do - i.e. Robots.

open platforms

software based on open standards where there is no single ownership and is freely available through open license.