UNIVERSITY EXAMINATIONS: 2018/2019
EXAMINATION FOR THE DIPLOMA IN INFORMATION
TECHNOLOGY
DIT506 DESKTOP PHOTOGRAPHY&VIDEO EDITING
FULL TIME/PART TIME
DATE: AUGUST, 2018 TIME: 1.5 HOURS
INSTRUCTIONS: Answer any THREE questions.
QUESTION ONE
a) Define video compression [2 Marks]
b) Distinguish between lossy and lossless compression and give their applications
[4 Marks]
c) Identify three lossless compression encoding algorithms [3 Marks]
d) Calculate the size of a video file of duration of 1 hour, a frame size of 640×480 (WxH) at
a color depth of 24bits and a frame rate of 25fps. [6 Marks]
e) State any FIVE factors would you take into account to produce a quality documentary
[5 Marks]
QUESTION TWO
a) Distinguish between (PAL) and (NTSC) analog television formats [4 Marks]
b) Define
i) sample rate [2 Marks]
ii) pixel [2 Marks]
iii) resolution [2 Marks]
iv) FireWire [2 Marks]
v) Video streaming [2 Marks]
c) What do these abbreviations mean?
i) WMA [1 Mark]
ii) JPEG [1 Mark]
iii) GIF [1 Mark]
iv) BMP [1 Mark]
v)MIDI [1 Mark]
vi) CODEC [1 Mark]
QUESTION THREE
a) Identify FIVE selection criteria for a good digital camera [5 Marks]
b) A bit depth of 16 bit can support how many colours [2 Marks]
c) State THREE key tasks in video editing [3 Marks]
d) What is the quicktime video standard? [5 Marks]
e) Distinguish between linear and non-linear video editing [4 Marks]
f) Name one video editing software other than Windows movie maker [1 Mark]
QUESTION FOUR
A) distinguish between
i) storyboard and timeline [2 Marks]
ii) video effects and video transition [2 Marks]
iii) computer graphics and computer animations [2 Marks]
c) Explain the following desktop photography terminologies
i) aperture [1 Mark]
ii) pixelate [1 Mark]
iii) Sepia [1 Mark]
iv) Mosaic [1 Mark]
v) Hue [1 Mark]
vi) Red- eye [1 Mark]
d) state FOUR advantages and disadvantages of data compression [8Marks]
QUESTION FIVE
a) How much memory is required for an 5160 by 4290 display resolution with colour depth
24 bits? [5 Marks]
b) State four factors that are essential in audio digital recording [5 Marks]
c) What is the size of uncompressed stereo sound with CD quality for 3 minute of audio :
[4 Marks]
d) Using LZ coding encode the following text
ABBAMMMNNNABBNABCBAABBM [6 Marks]
