Lesson 2 Flashcards
(42 cards)
Job of a computer?
TO take in data, manipulate it, and spit out that same data in a different way.
Who was Alan Turing?
A British engineer who created a code breaker machine. Basically a computer.
What is data?
They are raw facts.
What two categories can data be divided into?
Quantitative or numbers and Qualitative or descriptive.
What is information?
It is processed data that posses context, relevance, and purpose. Information uses involves manipulation of the raw data to obtain an purpose.
What is knowledge?
It is collection of human beliefs or perceptions. Knowledge is information that facilitates action.
What are the 2 categories of Knowledge?
Explicit and tacit
What is explicit knowledge?
knowledge that is expressed as words or numbers
What is tacit knowledge?
knowledge that includes intuition and insight. It is hard to communicate. Tacit knowledge can be knowing that being good at math can help you become successful.
What is Wisdom?
It is the combination of knowledge and experience to have a deeper understanding of a topic.
Order knowledge, wisdom, data, and information correctly in order from least to most cumulative.
Data -> information -> knowledge -> wisdom
What is a database?
taking data and applying context to allow the user to draw conclusions.
What is a relational database?
Data organized into tables/relations.
What is a Boolean?
a data type with only two possible values like yes or no.
Paragraph text?
Used to store data longer than 256 characters.
What is text?
stores non-numeric data for under 256 characters.
What is an object in a database?
A data type that allows storage of data that cannot be entered using the keyboard such as an image.
Who created the internet?
DARPA who was created by the united states government.
Why was the internet created?
to ensure that the U.S. wouldn’t be surprised again as the USSR launched a satellite called Sputnik into space. This was during the cold war when both countries wanted to obtain information and militaristic advatanges.
Internet meaning?
interconnected network of networks.
More networks were made for different organizations who all used different protocols. This led to communication problems. What was the solution?
The creation of the Transmission Control Protocol/Internet Protocol.
Packet definition?
Fundamental unit of data transmitted over the internet.
Switch definition?
A network device that connects multiple hosts together and forwards packets within a LAN.
Router?
A device that receives and analyzes packets and then routes them towards a destination.
