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level: bytes

Questions and Answers List

level questions: bytes

Question	Answer
1 kilobyte is how many bytes	1024^1 bytes
1 megabyte is how many bytes	1024^2 byte
what is 1 bit of data	0 or 1
1 Nibble equals to how many bits	4
1 Gigabyte is how many byte	1024^3
1 Terabyte is how many bytes	1024^4
What is the sequence for data storage smallest to larger	bits nibble bytes kilobytes megabytes gigabytes terabyte petabyte
How many bytes is in one petabyte	1024^5
what is a overflow error in computing	When a calculation is run but computer can’t store the answer correctly
In calculation, how many bytes is in 1 kilobyte?	1000
What is a register	A small piece of memory where values can be held
What are 3 ways to store characters	ascii extended ascii and unicode
What is the difference between ASCII and Extended ASCII?	ASCII has 7 bits and extended ASCII has 8 bits
What is the definition of a character set?	A defined list of characters recognised by the computer
What are the squares in an image called	Pixels
What is metadata	Additional data storage with width height colour and depth of image
What is the formula of raw file size of an image	(Widthheightcolour depth)+10% of metadata
What does a compression do	Reduce number of bits in files
What is lossy compression suitable for	Images, sound and video
What is loseless compression suitable for	Documents
What is the definition of lossy compression?	Compressing file where some data of the original file will be lost
What is the definition of loseless compression	Compressing file with no data lost but encoded differently
what is analogue to digital conversion	Analogue signal transferring to digital binary
Low bit depth means	Lower quality
Low sample rate means	Lower quality
Higher bit depth means	Higher quality 1
High sample rate means	Higher quality
What is the definition of sample size	Total number of bits in sound
What is the formula for sample of size	Bit depth* number of sample per sec* number of seconds