UNIVERSITY EXAMINATIONS: 2015/2016
EXAMINATION FOR THE DIPLOMA IN INFORMATION
TECHNOLOGY
DIT506 DESKTOP PHOTOGRAPHY & VIDEO EDITING
DATE: AUGUST 2017 TIME: 2 HOURS
INSTRUCTIONS: Answer any THREE questions.
QUESTION ONE
a) Identify FIVE selection criteria for a good digital camera [5 Marks]
b) A bit depth of 16 bit can support how many colors [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]
d) What roles do the following play in video production (6 Marks)
i) Costume designer
ii) Director
iii) Scriptwriter
e) What are the FOUR benefits enjoyed so far for the migration to digital TV in
Kenya (4 Marks)
QUESTION TWO
a) Explain the following desktop photography terminologies
i) aperture [1 Mark]
ii) pixelate [1 Mark]
iii) Sepia [1 Mark]
iv) contrast [1 Mark]
v) Hue [1 mark]
vi) Red- eye [1 mark]
b) state FOUR advantages and disadvantages of data compression [8 Marks]
c) Distinguish between
i) storyboard and timeline [ 2 Marks]
ii) video effects and video transition [2 Marks]
iii) computer graphics and computer animations [2 Marks]
QUESTION THREE
a) Define video compression [2 Marks]
b) Video compression is the process of reducing the amount of data that is needed to
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 FOUR
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 FOUR
a) How much memory is required for an 1200 by 1080 display resolution with
thousands of colors per pixel (16 bit)? [3 Marks]
b) State four factors that are essential in digital recording [ 4 Marks]
c) What is the size of uncompressed sound with CD quality for 1 minute of audio:
[4 Marks]
d) Using Huffman encoding algorithm for a data file that has the following characters
Character A B C D E
Frequency 10 16 19 7 17
i) give the Huffman tree and code [6 Marks]
ii) using (i) encode AAEBDEDC [3 Marks]
