Digital Information (Part 1)
What is Digital Information made of?
Binary Numbers (1s & 0s)
What are pixels?
building blocks of digital images; a pixel is the smaller element of a digital image
What is the internet?
A philosophy of making information and knowledge open and accessible to ALL; It is also a way for machines to communicate and collaborate.
What are Packets?
where data over the internet is broken down into; units of data send over the network
What is Data and how is it involved with programs?
Data is information that can be read by computers; Programs take in input data to create output data.
Convert 73 into binary.
1001001
What is the base for Hexadecimals?
16
What are Networks?
A group of 2 or more computer systems linked together
What does TCP stand for?
What is Transmission Control Protocol?
What are the 5 ways that data can be visualized?
What is ASCII and what does it?
ASCII (American Standard Code for Information Interchange) is a protocol for encoding text with binary.
How are filters on images implemented?
Through manipulating numeric data that represents pixels to modify images
What is bandwidth, birate and latency?
Bandwidth: capacity of data transfer in a system
Birate: # of bits a system can send in a second
Latency: the time it takes for a bit to get sender to receiver
What is the Internet Protocol?
a protocol that defines the layout of an Internet Address (IP Address)
How is data stored?
Data is stored through local disk memory, databases and through encryption.
What is RGB Color Encoding? What is the maximum value?
RGB is way of encoding colors as numeric data; it defines the amount of Red, Green and Blue in pixels. The maximum values is 255.
Why is data compressed?
Data is compressed because (1)to save storage space, (2)give time/bandwidth while transmitting data and (3) trade off storage for computation.
What is HTTP and TCP?
HTTP: is a protocol that standardizes the language for talking to web servers to send and receive web resources
TCP: allows for sending of multiple packets between 2 computers
What holds more IP addresses: IPv4 or IPv6?
What is IPv6?
Knowledge (recognize patterns, predict future events, solve problems,ect)
What is data compression?
Data compression is the process of encoding information using fewer bits than the original representation.
What is cryptography?
The process of scrambling information (encryption) digital information into an unreadable form; only those with verified authority can unscrambling (decrypt) to read it
How many steps are involved in viewing a web page?
What is 11 steps?
What is Internet Engineering Task Force (IETF)?
Its an open community on the internet that decides on the protocols.
How does data visualization help?
It helps to make data easier to understand.