Standard File Format

Question 1

What are the standard file formats for?

Answer 1

Audio, movies,, pictures, spreadsheets, word processed docs, and databases

Question 2

What are the programs for word processing

Answer 2

Notepad .txt plain text with no formatting
Word pad .rtf formatted text which can be read by any word processor
Word 2013 .docx formatted text only readable by compatible software

Question 3

What are the file formats for spreadsheets

Answer 3

XLS or XLSX - standard file format for MS excel, saves data, charts, formulas. XLSX form of XML format
XML - eXentisble Markup Language set of rules to make an open format that can be read by many programs and systems
CSV - Comma Separated Values stores tables of data in plain text

Question 4

What does multimedia refer to

Answer 4

Text, audio, graphics, animation, video

Question 5

What do high quality images, video and sound take up

Answer 5

A lot of space on a computer

Question 6

What do multimedia files do

Answer 6

Compress files to reduce file size

Question 7

What does compression do

Answer 7

It reduces file size but sometimes reduces quality

Question 8

What are the file formats for audio files

Answer 8

WAV - uncompressed file format, good quality but large file size
MP3 - compressed file format that removes sound that the human ear cannot hear to reduce file size

Question 9

How would you save a sound to a computer

Answer 9

You would have to change it to a digital signal

Question 10

How would you change a sound to a digital signal

Answer 10

By taking a sample every fraction of a second and storing this is as a digital value

Question 11

What is the number of samples taken called

Answer 11

Sample rate and is measured in hertz

Question 12

What is the sample size measured in

Answer 12

Bits

Question 13

What does it mean if the sample rate is high

Answer 13

Then the higher quality of recording

Question 14

What are the video files file format

Answer 14

AVI - high quality uncompressed video format with large file size
MPEG - compressed video format so files smaller but quality is reduced

Question 15

What do bitmap graphics store

Answer 15

Color code of every pixel in an image

Question 16

What ate the common file formats for bit,as fraohics

Answer 16

JPG, PNG, BMP, GIF

Question 17

What are GIFS

Answer 17

Compressed files without any loss of quality can be animated and can have transparent backgrounds but can only have 256 colours

Question 18

What are JPEGS

Answer 18

Can have over 16 million colours but lose some quality when they are compressed to reduce their file size

Question 19

What is PNG

Answer 19

Can have over 16 million colours have transparent backgrounds, compressed without losing any quality

Question 20

How are animated GIFS made

Answer 20

Creating series of still images and playing them back as an animation

Question 21

What does it mean when a picture has a high colour depth

Answer 21

Higher image quality but file size is large

Question 22

What is colour depth

Answer 22

Number of colours a pixel can be

Question 23

What is resolution

Answer 23

Measure of sharpness/clarity of image

Question 24

What is resolution the measure of

Answer 24

Pixels in image or display

Question 25

What does it men if a picture has high resolution

Answer 25

More detailed / precise picture is

Question 26

What is a PDF

Answer 26

Standard file format that captures all elements of printed document as an electronic image

Question 27

What is a file format

Answer 27

How data is stored on a computer