Chiu Lut Sau Memorial Secondary School
Year 2004-2005
Computer and Information Technology
S4E, Quiz 1: Multimedia
Name:
Class:
Class No:
Mark:
Write all the answers in the following table:
1
6
11
16
21
26
2
7
12
17
22
27
3
8
13
18
23
28
4
9
14
19
24
29
5
10
15
20
25
30
Choose the most suitable answer:
1. Which of the following is NOT correct?
A)
B)
C)
D)
Each character occupies 1 byte of storage.
All characters can be printed out on paper.
Storing 10 Chinese characters normally needs 20 bytes.
Characters include letters, digits and symbols.
2. Size of plain text file is smaller than word processing
document because
(1) Word processing documents contains formatting
(2) Plain text file stores ASCII Code only
(3) Plain text files are compressed
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
5. Which of the following will affect the number of pages of a
word processing document?
(1) Line spacing
(2) Alignment
(3) Page margin
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
6. Which of the following is NOT necessary for voice
recognition?
A)
B)
C)
D)
Sound card
Microphone
Speaker
Voice recognition software
3. Which of the followings is character formatting feature?
A)
B)
C)
D)
Font
Paper size
Page margin
Indentation
4. Which of the followings is paragraph formatting feature?
A)
B)
C)
D)
Bold
Font size
Paper orientation
Alignment
CLSMSS/0405/S4/CIT/Test2
7. Mr. Chan wants to build a web page to show text of both
Traditional Chinese and Simplified Chinese. Which of the
following methods can work?
(1) Using Unicode
(2) Using Big5 and GB code at the same time
(3) Using Big5 for Traditional Chinese, while using
image to represent Simplified Chinese
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
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8. Which of the following about bitmap graphic is FALSE?
A)
B)
C)
D)
The smallest unit in bitmap image is pixel.
The size of a bitmap image depends on the dimension.
One pixel always uses one byte for storage.
Each pixel can store only one color.
16. What is the color depth of animated GIF?
A)
B)
C)
D)
1-bit
8-bit
16-bit
24-bit
9. Which of the following about color depth is TRUE?
A)
B)
C)
D)
The color depth of black-and-white image is 2-bit.
“True Color” means 16-bit color depth.
There are at most 8 colors in 8-bit gray scale image.
Indexed color is usually applied in 8-bit color depth.
10. What is the approximate file size of a 24-bit bitmap image
of size 100 x 100?
A)
B)
C)
D)
240,000 Bytes
30,000 Bytes
2.4 MB
0.3 MB
11. Scanning a photo of 3 inch x 3 inch by resolution of 150
dpi, will produce an images of size
A)
B)
C)
D)
450 x 450 pixels
150 x 150 pixels
50 x 50 pixels
9 x 150 pixels
12. Which of the following about vector graphics is FALSE?
A) Vector graphics stores geometric data only.
B) The file size of vector graphics depends on the
complexity of the image.
C) Vector image can be converted to bitmap image.
D) The color depth of vector is always 24-bit.
13. Aspect ratio is the ratio of
A)
B)
C)
D)
image height to image width
image width to image height
image size to file size
file size to image size
14. Which of the following will cause data loss?
(1) Storing an image in JPEG format
(2) Reducing the size of an image
(3) Decreasing the color depth of an image
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
15. Vector graphics are small in file size because
A)
B)
C)
D)
It stores geometric data only.
The color depth is lower.
The dimension is smaller.
It is represented by pixels.
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17. What is frame rate?
A)
B)
C)
D)
The number of frames in the animation
The duration of the animation
The number of frames in one second
The number of bits for one second of data
18. An animated GIF does not contain
(1) Bitmap images
(2) Background music
(3) Vector graphics
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
19. Which of the followings is NOT a property of wave file?
A)
B)
C)
D)
Frame rate
Sampling rate
Sampling size
Number of channels
20. Which of the followings about MIDI file is FALSE?
A) MIDI file stores scores and notes of music.
B) MIDI takes up much smaller storage space when
compared to WAV of the same length.
C) MIDI can store human voice.
D) MIDI is more suitable than MP3 for background music
of web pages.
21. Which of the following about sampling is FALSE?
A) Sampling is digitization of recorded sound wave.
B) Sampling rate means the number of bits used to store
sound data in one second.
C) Sampling size is the number of bits storing each sample.
D) High sampling rate produce better sound quality.
22. Why are most sound files compressed?
(1) To reduce the file size
(2) The facilitate playback over network
(3) The improve the sound quality
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
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23. What is the approximate file size of a 10 second mono
wave file of sampling rate 44.1kHz and sampling size 8-bit?
A)
B)
C)
D)
10 x 44.1 x 8 Bytes
10 x 44100 x 2 x 8 Bytes
10 x 44100 Bytes
10 x 44.1 x 2
24. Which of the following formats is/are compressed?
(1) MP3
(2) RA (Real Audio)
(3) MIDI
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
25. The output quality of MIDI file depends on
(1) Sound card of the computer
(2) File size of the MIDI file
(3) Software that plays the MIDI file
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
27. What is Codec?
A)
B)
C)
D)
Coding and decoding
Comparison and Decomparison
Code decompression
Copy and Decrease
28. Mr. Chan plays a movie in his computer. He can see the
video smoothly but he cannot hear any sound. Possible
reason(s) is/are:
(1) His speaker is not connected properly.
(2) The sound codec is not installed in his computer.
(3) His computer is not fast enough.
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
29. The file size of a video file depends on
(1) The codec used
(2) The frame rate
(3) The dimension of the video
A)
B)
C)
D)
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
26. Which of the following about video file is TRUE?
30. Which of the following about compressed video is TRUE?
A)
B)
C)
D)
It must contain video and sound.
The file must be compressed.
The color depth is always 24-bit.
It always contains sequence of bitmaps.
A) The higher the compression ratio, the better is the video
quality.
B) The higher the bit rate, the better is the video quality.
C) The higher is the compression ratio, the larger is the file
size of the video.
D) The higher the bit rate, the longer is the duration of the
video.
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