Representing text, images and sound

Question 1 of 10

A character set is

A. a set of keyboards B. a type of font only C. a list of characters with the binary code for each D. a folder of pictures

Question 2 of 10

Lossless compression

A. removes data permanently B. reduces size without losing any original data C. only works on sound D. makes files bigger

Question 3 of 10

Metadata in an image file is

A. the image pixels only B. a virus C. the sound track D. data about the image, such as the date taken and size

Question 4 of 10

Describe how sound is converted into digital data.

Question 5 of 10

The number of sound samples taken per second is the

A. resolution B. sample rate C. colour depth D. clock speed

Question 6 of 10

A higher resolution image usually has a smaller file size.

A. True B. False

Question 7 of 10

Unicode can represent more characters than standard ASCII.

A. True B. False

Question 8 of 10

Calculate the size in bits of a black-and-white image (1 bit per pixel) that is 20 pixels wide and 10 pixels high. Show your working.

Question 9 of 10

Standard ASCII uses how many bits per character?

A. 16 B. 2 C. 32 D. 7

Question 10 of 10

Increasing the resolution of an image usually

A. decreases the file size B. removes colours C. adds sound D. increases the file size

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New set of questions

Questions written by OtisamLMS in the style of the BECE. They are not WAEC past questions.

Past questions, worked solutions and curriculum-mapped study material for JHS and SHS students and teachers in Ghana.

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