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Worksheets10 minute test 5
Total questions: 13
Worksheet time: 7mins
A one place left shift on a binary number...
doubles the number
halves the number
To be processed by a computer, all data must be converted into ...
A binary format
A hexadecimal format
How many bits are in a Kilobyte?
8000
1000
4
An images' creation date, time and location are all types of metadata.
True
False
Which of these hexadecimal numbers is the largest?
23
1F
2A
The process of converting an analogue signal into a digital signal is known as...
compression
re-coding
sampling
Hexadecimal numbers are often used by programmers instead of binary numbers because...
there are fewer hexadecimal numbers than binary numbers
they are shorter, which makes them easier to remember
Increasing the number of bits used per pixel in an image will...
increase the range of colours that the image can display
decrease the resolution
have no impact on the image file size
If the binary representation for y is 01111001 (121 in denary). Then what is the binary representation for z?
0111 1010 (122)
0111 1011 (123)
0111 1000 (120)
What is the file size of a text file in bits that contains 30 characters and uses the ASCII character set?
30 characters x 8 bits per character = 240 bits
30 characters x 7 bits per character 210 bits
30 characters x 8 bits per character / 8 = 30 bytes
What is the binary representation of the Hexadecimal character 5E?
0101 1110
0100 1011
0101 1111
A singer is recording vocal tracks for their new album.
A sound engineer increases the sample rate and bit depth of the recordings.
Select one benefit of these changes.
The digital track will sound more like the original.
The file size will be larger.
The file size will be smaller.
The digital track will sound less like the original.
A singer is recording vocal tracks for their new album.
A sound engineer increases the sample rate and bit depth of the recordings.
Select one drawback of these changes.
The digital track will sound more like the original.
The file size will be larger.
The file size will be smaller.
The digital track will sound less like the original.
