SLR 13 - Part 2

How many colours can be represented with a 2 bit colour depth?

• 2

• 4

• 6

• 8

Which of these is NOT stored in an image's metadata?

• width

• height

• colour depth

• pixel size

An image has a width of 100 pixels and a height of 50 pixels. Its colour depth is 8-bit. Ignoring metadata, what will the file size of the image be?

• 4000 bytes

• 4000 bits

• 5000 bits

• 40 000 bits

What is the sample rate of an audio recording?

• The number of samples recorded per second

• The number of bits per sample

• The bit rate multiplied by the length of the recording

• The frequency of the notes

A sound is recorded with 4-bit sample resolution. The sample rate is 6Hz. The recording lasts for 10 seconds. How large will the file be, in bytes?

• 240 bytes

• 300 bytes

• 30 bytes

• 60 bytes

Compression that does not lose any data when it reduces the file size is called...

• JPEG

• zip

• lossy

• lossless

If using 3-bit binary, white could be 000 and black 001. The first row of pixels in this image could be represented as

000 000 001 001 000 000

how could this be represented with RLE?

• 010 000 010 111 010 000

• 010 000 010 001 010 000

• 000 000 001 001 000 000

• 010 111 010 000 010 111

What would the bit pattern be to store the word 'BADGER' using Huffman coding?

• 1 0 00 10 01 11

• 0 1 11 01 10 00

• 01 00 11 01 10 00

• 0 1 00 11 01 00

Which word would the following Huffman code produce?

100 001 1 0 000 11

Which word would the following Huffman code produce?

111 001 01 11 000