1.2 Data Representation

How many bytes are there per ASCII character in a text file?

• 0.5

• 1

• 1.5

• 2

Which is the smallest of these data capacities?

• 2 KB

• 2049 bytes

• 0.5 MB

• 3 GB

Which is the largest of these data capacities?

• 2048 MB

• 2 GB

• 2050 MB

• 100000 KB

Which formulae can be used to estimate the file size of an image?

• number of pixels * number of bytes per pixel

• number of pixels

• number of pixels wide * number of pixels high * number of bytes per pixel

• number of pixels wide * number of bytes per pixel * number of pixels

Which formulae can be used to estimate the file size of a sound file?

• bytes per sample * channels * height + number of minutes

• samples per second * number of seconds

• samples per second * bytes per sample * duration

• samples per second * bit depth * duration

What numeric base does binary operate on?

• 2

• 1

• 8

• 16

How many bits are there in a byte?

• 8

• 16

• 1

• 2

What is the minimum number of bits needed to represent 15 in denary?

• 6

• 4

What is the 8 bit binary representation of 177?

• 00010010

• 00010001

• 00011001

• 00100010

What is the 8 bit binary representation of 322?

• 00100000

• 00101000

• 00110000

• 00100001