Unit 1

Question 1

what base is binary numbers?

Answer 1

base 2

Question 2

list the binary pattern

Answer 2

64 32 16 8 4 2 1

Question 3

how are large binary numbers written?

Answer 3

in chunks of 4

Question 4

is there a pattern for determining if a binary number is odd?

Answer 4

if it is odd, the binary number ends with a 1

Question 5

what base is the hexadecimal system?

Answer 5

base 16

Question 6

what do you use in the binary number system?

Answer 6

0 and 1

Question 7

what do you use in the hexadecimal system?

Answer 7

0 1 2 3 4 5 6 7 8 9 A B C D E F

Question 8

A2D to binary

Answer 8

1010 0010 1101

Question 9

1010 0101 1110 to hexadecimal

Answer 9

A5E

Question 10

how to calculate compression percentage?

Answer 10

amount gone/original

Question 11

what is a byte?

Answer 11

a byte is a unit of data that is 8 bits long

Question 12

KB

Answer 12

kilobyte - 1000 bytes (10^3)

Question 13

MG

Answer 13

megabyte - 1 million (10^6)

Question 14

GB

Answer 14

gigabyte - 1 billion (10^9)

Question 15

TB

Answer 15

terabyte - 1 trillion (10^12)

Question 16

PB

Answer 16

petabyte - (10^15)

Question 17

EB

Answer 17

exabyte - (10^18)

Question 18

all bytes in increasing order

Answer 18

kilobyte, megabyte, gigabyte, terabyte, petabyte, exabyte

Question 19

how many mbs per minute does a MP3 hold?

Answer 19

1 MB

Question 20

one hour of high quality video?

Answer 20

1.5 GB

Question 21

3.5 million characters equates to

Answer 21

3.5 MB

Question 22

what is the internet?

Answer 22

tangible physical system made to move info

Question 23

what does the internet ship?

Answer 23

binary information (1= on, 0=off)

Question 24

what is binary information made out of?

Answer 24

made of bits

Question 25

how many bits equal a byte?

Answer 25

8 bits

Question 26

what are atoms of information?

Answer 26

bits

Question 27

3 ways we send bits

Answer 27

electricity, light, radiowaves

Question 28

how does radio waves work in sending bits?

Answer 28

sender- binary to radio waves
receiver - radio waves to binary

Question 29

what is bandwith?

Answer 29

max transmission capacity

Question 30

how is bandwidth measured?

Answer 30

bitrate: # of bits per second a system can transmit

Question 31

what is latency?

Answer 31

amount of time it takes for a bit to travel from sender to reciever

Question 32

what are pixels made of?

Answer 32

red green blue

Question 33

what is resolution?

Answer 33

dimensions in pixels

Question 34

what is density

Answer 34

small screen=more dense=sharper images

Question 35

range of bits in pixels?why?

Answer 35

0-255; 11111111- 8 bits= 255 in binary

Question 36

what does 0 mean in pixels? 255?

Answer 36

dark; light

Question 37

for pixels how are the binary codes split?

Answer 37

into threes

Question 38

what is lossy compression?

Answer 38

to save space some info is thrown away

Question 39

ex of lossy

Answer 39

image can be compressed into lower resolution

Question 40

lossless compression

Answer 40

no data lost, so it can be decomposed into exact og

Question 41

ex lossless

Answer 41

find patterns and use that to compress - lyrics, books

Question 42

what is the aim of compression?

Answer 42

represent info in smallest format possible

Question 43

what does copyright allow for?

Answer 43

allows creators to decide where and how much their piece is sold- you have the choice

Question 44

what does copyright create for creators?

Answer 44

a marketplace