File management Flashcards
Explain what the following file extensions are short for and what type of file associated with? rtf
Rich Text Format- text and images
Explain why generic file types are used?
It allows you to save files so that they can be opened on any platform
Explain what the following file extensions are short for and what type of file associated with? csv
Comma Separated Values- spreadsheets
Explain what the following file extensions are short for and what type of file associated with? txt
Standard Text Document- Text
Explain what the following file extensions are short for and what type of file associated with? gif
Graphics interchange Format- storing moving images
Explain what the following file extensions are short for and what type of file associated with? jpg
Joint photographic Experts group- still and small images
Explain what the following file extensions are short for and what type of file associated with? png
Portable Network Graphics- higher quality images
Explain what the following file extensions are short for and what type of file associated with? pdf
Portable Document Format- image, hard to edit
Explain what the following file extensions are short for and what type of file associated with? mp3
MPEG - 1 Audio Layer – 3 – videos, good quality
Explain what the following file extensions are short for and what type of file associated with? mp4
mp4 - MPEG – 4 Format – Has all additional things to a video
Explain what the following file extensions are short for and what type of file associated with? css
Cascading Style Sheet- instead of editing whole file
Explain what the following file extensions are short for and what type of file associated with? htm
Hypertext Markup Language- websites
Explain what the following file extensions are short for and what type of file associated with? zip
File compressed format- makes files smaller
Explain what the following file extensions are short for and what type of file associated with? rar
Roshal Archive Format- makes files smaller
Why should I use version numbers when saving work, e.g. compressionV1, compression V2, etc?
So if your download does not work you can go back to the correct one or a different number for each other
Give 2 reasons why using smaller file sizes is desirable?
Reduces the amount of space needed to store data and download.
Units of download sizes in order of smallest to largest.
Bit
Bite
KB
MB
GB
TB
PB (Peta Byte)
What are the 2 types of compression called?
Lossy compression and lossless compression
What are the key differences between lossy and lossless compression?
With lossy compression you lose some quality on your video and data but on lossless you reduce file size with no loss of quality. The negative of lossy is that you loose the original quality
Explain why we use file compression.
We use file compression because:
Less storage space required for files
Faster download and uploads
Smaller file attachments for emailing
Coping with slow links when streaming
Saving a lot of storage- we can save much more storage on our hard drive. Many applications have a size limit to your exports.
What is normal test data?
Typical and sensible data that a computer should be able to processed by a computer
What is abnormal data?
Abnormal data is test data that falls outside of what is acceptable and should be rejected by the system.
What is extreme data?
Extreme test data is the maximum and minimum values of normal data that are accepted by the system.
Give 2 error messages which may come up when attempting to save work.
- “Error: Unable to save data. Please check your internet connection and try again.”
- “Error: Insufficient disk space. Unable to save data. Please free up disk space and try again.”
