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WorksheetsComputer files
Total questions: 20
Worksheet time: 20mins
Computers store all files as binary data, even applications.
True
False
The type/kind/format, is often reflected in its file extension.
True
False
How a computer can try to open a file without a file extension?
Application will look for clues within the file header.
Without a file extension the application will ALWAYS crash
The user will need to rename the file with the correct file extension.
Their is no way to run a file without a file extension.
A file with a GIF extension will always start with the letters___________, encoded in binary according to the ASCCII standard.
GIF
IFG
EXE
RUN
A file with the .ZIP extension is :
A text file with a list of data.
A compressed folder of files.
An animated cartoon image
A recording of a song.
A file with the .js extension is :
A text file with a list of data.
A compressed folder of files.
An animated cartoon image
JavaScript, the primary scripting language of webpages.
File sizes are always measured in :
Bits
Bytes
Mega Bits
Bits per second.
A 1000 bytes file is equal to:
1 Kilo Byte
1 Mega Byte
1 Giga Byte
1 Tera Byte
Alejandro wants to explain the importance of file extensions to his friend.
When a file has an extension, users can open files in applications they don't own.
When a file has an extension, the computer can decide what application to open it in.
When a file has an extension, the computer is allowed to store additional metadata about it.
When a file has an extension, the user knows who created the file
William has a smart phone that can store 1 GB of data. He sees a commercial for a new phone that promises storage for 1 TB of data.
Around 2 times more data.
Around 10 times more data.
Around 100 times more data.
Around 1000 times more data.
Kevin is entering the JS1K contest, a contest to write an interesting program in just 1KB of JavaScript code. He's hoping he can rewrite a program that's currently 1MB and enter that for the contest.
Around 1/2 of the original size.
Around 1/100 of the original size.
Around 1/500 of the original size.
Around 1/1000 of the original size
Which of these are examples of metadata for a photo?
👁️Note that there may be multiple answers to this question.
The timestamp when the photo was downloaded.
The number of bytes of data in the file.
The color of the center pixel.
The people who have permission to edit the file.
Which of these are examples of metadata for an audio file of a song recording?
👁️Note that there may be multiple answers to this question.
Choose all answers that apply:
The frequency of the note at 1:30.
The number of bytes of data in the file.
The artist of the song.
The timestamp when the file was created.
The volume at 13 seconds.
Bad Bunny is looking through her computer files and discovers a file that has no extension.
What is true about that file?
It is stored as binary data by the computer.
It must be a text file, since that's the default type for a file.
Its contents are not written following any standard file format.
If it is renamed with an extension, it will become that file format.
It can be opened in any application.
What is an algorithm?
Is a specific procedure for solving a well-defined computational problem.
Is is a mathematical equation to solve a problem.
Is an application to write code.
None of the above
Lossless compression algorithms reduce the size of files without losing any information in the file.
True
False
Lossy compression algorithms reduce the size of files without losing any information in the file.
True
False
Computers can compress text by finding repeated sequences and replacing them with shorter representations.
True
False
A bitmap (or raster graphic) is:
A digital image composed of a matrix of dots.
A sound file composed of a matrix of dots.
A geographical map file.
All of the above
What application in Windows 11 is used to search for files stored in your Computer secondary storage.
File Explorer
Search
Word
Teams
