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seamaledicentAI and Robotics

Nov 17, 2013 (3 years and 6 months ago)

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4

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C
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Final Exam
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/P.
1

HKTA Tang Hin Memorial Secondary School

S4
Information & Communication Technology ELECTIVE
C

20
1
2



20
1
3

Final Examination

Question
-
Answer Book


Date:

1
9
th

June
, 20
1
3

Time:

8
:
3
0

a
.m.


10
:
3
0
a
.m.

Instructions:

1.

The paper consists of
1
0

pages.

2.

Answer ALL questions in this paper.
Put all your answer on th
is

Question
-
Answer Book.


3.

Put all your answers of Section A in the app
ropriate boxes on P.
6
.

4.

The full mark of this paper is
5
6
.



C

TURN TO PAGE
6

WHEN
YOU SUBMIT THE PAPER

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Final Exam
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/P.
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Section A Multiple Choice Questions (
2
0%)


Q
1

Which of the following is not a device used in the
digitization

of multimedia elements?

A.

video capture card

B.

MIDI keyboard

C.

Scanner

D.

CD
-
ROM
drive

*


Q
2

Which of the following multimedia element is most suitable for a visually impaired person?

A.

Image

B.

Video embedded in Flash file format

C.

Text in Arial font

D.

Wave audio

*


Q
3

Which of the following is not a text creation method?

A.

Scanner and OCR so
ftware

B.

Touch sensitive plate and handwriting recognition software

C.

digital camera and graphics editing software

*

D.

Microphone, sound card and voice recognition software


Q4

The aspect ratio of a graphic indicates

A.

amount of compression

B.

the
proportionality of the width and height of an image

*

C.

the colour depth

D.

amount of rotation


Q5

A scanned line art (eg. Cartoon) is best stored in

A.

Flash movie

B.

GIF

*

C.

JPG

D.

BMP


Q
6

Which of the following is
wrong

about vector graphics?

(I)

Vector
graphics are always smaller than bitmap graphics

(II)

Vector graphics can show 24 bit color depth

(III)

Vector graphics cannot be resized to 800
x
800 pixels

(IV)

Vector graphics can be put into web page

A.

(I)
only

B.

(I) and (III) only*

C.

(III) and (IV) only

D.

(II) and
(III) only



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Q7

The size of an uncompressed bitmapped graphic file depends on

(1)

the complexity of the image.

(2)

the
resolution

of the image.

(3)

the number of colours of the image.

A.

(1) only

B.

(2) only

C.

(1) and (2) only

D.

(2) and (3) only

*


Q
8

Which of the following should NOT affect the file size of
w
a
v
audio capture?

A.

the number of instrument
s

played *

B.

the number of channel
s

C.

the compression ratio

D.

the codec it uses


Q
9

The quality of digiti
z
ed sound depends on

(1)

sampling
frequency

(2)

sample

size

(3)

the number of channels

A.

(1) only

B.

(1) and (2) only

C.

(
2
) and (3) only

D.

(1), (2) and (3)

*


Q
10

Which of the following file formats is /are compressed?

(1)

MIDI

(2)

WAV

(3)

MP3

(4)

Real Audio

A.

(1) and (2)

B.

(2) and (3)

C.

(3) and (4)

*

D.

(1), (2), (3) and (4)


Q1
1

Which of the following statements is correct?

A

Wave file is suitable for web broadcast.

B.

MIDI file is suitable for background music for web page.

*

C.

MP3 file does not support compressed high quality audio.

D.

Real Audio
does not support streaming.



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Q1
2

Which of the following

is a
wrong

codec of video?

A.

MPEG
-
4

B.

DIVX

C.

Windows Media Player

*

D.

RealVideo


Q1
3

Which of the following process will not lower the quality of the original file?

A.

Convert BMP file to JPG file

B.

Convert WAV

file to MP3 file

C.

Convert AVI file to MPG file

D.

Convert RA file to WAV file *


Q1
4

Which of the following contributes to higher video quality?

A.

higher codec bit rate

*

B.

lower frame rate

C.

smaller file size

D.

smaller frame size


Q1
5

Which of following
statement
s is false?

A.

The frame rate of animated GIF is low (<10fps).

B.

Flash movie consists of vector images.

C.

Keyframes exist in animated GIF.

*

D.

File size of flash movie depends on number of objects and complexity of the object
s.


Q16

What is the meaning of the following HTML codes?

<A href="abc.htm"><IMG src="abc.jpg"></A>

A.

An image
abc.jpg,
which consists of the word
abc.htm

linking the web page
abc.htm
,

is displayed.

B.

A web page
abc.htm,
which consists of an image
abc.jpg
,

is displayed.

C.

An image
abc.jpg

will be shown after the web page
abc.htm

is clicked.

D.

A web page
abc.htm

will be shown after the image
abc.jpg

is clicked. *



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Q
1
7

When a web page is opened, the
following

symbol appears in the web browser. It means

________________________________________.



A.

the web browser
can
not find the web page

B.

the web browser
can
not find a
n image

o
f

the web page *

C.

the web author
can
not put
a

specific
image

into the

HTML file

D.

the web browser
does

not support the graphics file format


Q18

The following shows a segment of HTML codes:

<A href=mailto:abc@hellocit.com>Mail me</A>


When ‘Mail me’ is clicked in the web browser, which of the following is the most probable

outcome?

A.

The web browser sends an e
-
mail to
abc@hellocit.com

immediately.

B.

The web browser opens a new web page and the web page allows the users to edit the e
-
mail.

C.

The system opens the e
-
mail software installed in the computer, and the software
allows the users to edit
the e
-
mail. *

D.

The browser downloads e
-
mail software from the web server, and the software allows the users to edit the
e
-
mail.


Q19

Where in an HTML document is the correct place to refer to an external
CSS
style sheet?

A.

At the
end of the document

B.

In the <head> section

*

C.

In the <body> section

D.

At the top of the document


Q20
. Which of the following HTML codes is correct?

A.

<table border="1" bordercolor="#0F
G
0FF">

B.

<A href="#abc">ABC</A>

*

C.

<IMG src="happy.jpg">HAPPY</IMG>

D.

<RIGHT>This text is right
-
aligned.</RIGHT>







S
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ICT
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Elective

C
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Final Exam
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6


HKTA Tang Hin Memorial Secondary School

S4
Information & Communication Technology ELECTIVE
C

20
1
2



20
1
3

Second Test

Question
-
Answer Book


Date:

1
9
th

June
, 20
1
3

Time:

8
:
3
0

a
.m.


10
:
3
0
a
.m.

Instructions:

1.

The paper consists of
1
0

pages.

2.

Answer ALL questions in this paper.
Put all your answer on th
is

Question
-
Answer Book.


3.

Put all your answers of Section A in the appropriate boxes on P.
6
.

4.

The full mark o
f this paper is
5
6
.


Name: ________________________________ Class: ___________ Class No.: _____________


Section A Multiple Choice (
2
0%)


1

2

3

4

5

6

7

8

9

10

1
1

1
2

1
3

1
4

1
5

1
6

1
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1
8

1
9

2
0

A








A






A







B




B

B

B





B






B


B

B

C



C







C


C



C



C



D

D

D





D


D




D



D








C

TURN TO THIS PAGE WHEN
YOU SUBMIT THE PAPER

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C
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Final Exam
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7

Section B Long Questions (
36
%)


Q1

10M


Susan

has taken a number of photos during her trip to England. She then goes to a photo shop to make a
photo CD. She finds that there are two folders in the photo CD. Both folders store all photos. The
specifications of
the

photos in each folder are listed belo
w.



Folder A

Folder B

Resolution

1,840 x 1,230

600 x 401

Colour depth

24
-
bit

8
-
bit

File format

JPEG

JPEG


(a)

Susan

wants to send some photos to her friend via e
-
mail. She knows that
the

size of an attachment file for
her friend

s e
-
mail account cannot exceed 250KB. From which folder should she choose the photos?
Explain briefly
.


(2M)

_________________________________________________________________

_________________________________________________________________

_________________________________________________________________

__________________________________________________________
_______


(b)

Susan

also wants to select one of her photos as
the

computer desktop wallpaper. The resolution of her
computer screen is 1,024 x 768.

(i)

From which folder would you advise her to choose the photo? Give ONE reason to support your
answer.


(2M)

_________________________________________________________________

_________________________________________________________________

(ii)

After adjusting the downloaded photo to fit the full screen,
Susan

finds that the photo appears to be
stretched. Give
ONE possible reason for
this

and suggest ONE possible solution to the problem.


(2M)

_________________________________________________________________

_________________________________________________________________

_______________________________________
__________________________

_________________________________________________________________

(c)

If
Susan

coverts one photo from Folder A to uncompressed BMP format, estimate the file size of the BMP
file in
M
B.


(2M)

______________________________________
___________________________

_________________________________________________________________

_________________________________________________________________

_________________________________________________________________

(d)

She finds that even the re
solution and colour depths of 2 photos are the same,
the

file size differs from one
photo to another. Give
2

explanation
s

for this situation.


(2M)

_________________________________________________________________

_________________________________________________________________

_________________________________________________________________

a)

folder B, because file size of a photo < 250KB








b)i)

folder A, because downsizing would not affect the photo quality.





ii)

there

are different horizontal and vertical compression ratios. Keep the same
aspect ratio when adjusting the photo size.





c)

file size = 1840*1230*24/8/1024/1024 = 6.475MB







d)

different file formats and compression ratios


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Q2

7M

Kenny likes listening to the music very much. He can distinguish whether the music is in CD quality or in radio
qualit
y.

(a)

State and explain TWO different factors that affect the quality of music.



(
2

marks)

_________________________________________________________________________________________

________________________________________________________________________
_________________

_________________________________________________________________________________________

_________________________________________________________________________________________

__________________________________________________________
_______________________________

_________________________________________________________________________________________

(b)

Kenny saves some songs in CD
-
Audio and he wants to upload the songs to his
web page. Suggest Kenny
how the songs are processed be
fore uploading.



(2 marks)

_________________________________________________________________________________________

_________________________________________________________________________________________

________________________________________________
_________________________________________

(
c
)

Give
1

evidence that Kenny can be used to determine whether his computer can produce stereo sound.


(
1

mark)

_________________________________________________________________________________________

__________
_______________________________________________________________________________

_________________________________________________________________________________________

Sometimes Kenny searches for his favourite songs through the Internet. Some of them ar
e in MP3 Format
.

After downloading the files,
they are
played

in his MP3 player.

(
d
)

List
2

advantages of saving songs in MP3
f
ormat

except small file size
.



(
2

marks)

_________________________________________________________________________________________

_________________________________________________________________________________________

____________________________________________________________________________
_____________

_________________________________________________________________________________________

_________________________________________________________________________________________



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(a)

Sampling rate (1)


the number of points used to capture the sound wave in


one second (1)


Sample size (1)


the amount of information stored with each sample (1)

(b)

Reduce the file size of the songs (1) by reducing the sampling rate and


sample size.
(1)

(
c
)

The computer has two loudspeaker
s
. /


The plug for speakers is designed to transmit double sound track. /


In controlling the sound volume in a computer panel, you can control left and


right sound. (Any 1)

(
d
)

It supports streaming. (1)



It com
presses original sound by removing only the sound signals that



human ear cannot detect. (1)

Q3

13M

Wilson

Hung is a famous pop singer. In order to save more money, he decided to publish his Music Video DVD
at home by himself

a)

Describe in detail the steps

to digitize his Music Video from a videocassette tape and state the major type
of software or hardware required during the process.





(2 marks)


He has to connect the videocassette player into his computer with a
video capture card
.

Then he should use a
video capture software

to capture and save the video into AVI format



b)

After digitizing the videocassette tape into AVI format,
Wilson

wants to create some special effects and add
the lyrics in the video before making the VCD. De
scribe in detail the steps to create his Music Video
CD and state the major type of software and hardware required during the process.


(2 marks)


He has to use a
video editing software

to add effects and add lyrics

U
se a
DVD Burning Software

and a
DVD Writer
to burn the video in

DVD.





c)

Discuss 2 advantages to store his video files into DVD over video

tape



(2 marks).



DVD can store the video permanently while videotape may be damaged when time goes.

DVD shows better quality than
videotape.

The capacity of a DVD is higher than that of a videotape



After creating the DVD,
Wilson

decided to put the video files into his personal web site. However, he faces a
problem that the size of the hard disk of the server is too small to sto
re all the files.

d)

Wilson

thinks that he may compress the files using zip before putting them into the web pages. Is it a good
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method? Explain your answer briefly.








(2 marks)


No. It is not a good method.

audiences

still need large amount of time to download and decompress
the file.




e)

Describe briefly one other possible method to solve his problem





(2 marks)


Convert the video files into Real Video Format or MPG format that support video

streaming. Users
can start watching the video before the entire file has been transmitted.



f)

Wilson
finds that without compressions, the video file size is very large.
H
e decides to compress the video
using MPEG at a bit rate of 2500 kbps. Estimate the total length
of video that can be saved (in minutes) if
100 MB of disk space is used.


(2M)

_________________________________________________________________

_________________________________________________________________

_____________________________________________
____________________

_________________________________________________________________

f)

time = 100*1024*1024*8/60/2500/1000 = 5.6min

g
)

He

also finds some useful sports videos on the Internet.
H
e wants to include them on the web site. However,
he finds that the downloaded video clips cannot be properly played on her own computer. Suggest one
possible reason for this.

(1M)

_________________________________________________________________

_________
________________________________________________________

g)

She has not installed the video software

/ the appropriate codec


Q
4

6M

Write HTML code
s

for the following web

page:

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<HTML>

<HEAD>

_____________________________________________________________________

</HEAD>

<BODY vlink="#F0F0F0">

_____________________________________________________________________

_____________________________________________________________________

<ul>

_____________________________________________________________________

_________________________________________
____________________________

</ul>

_____________________________________________________________________

<ol>

_____________________________________________________________________

_____________________________________________________________________

</ol>

</BODY>

</HTML>

END OF PAPER



Points to
www.tanghin.edu.hk

This link (w3c.org) is
visited.
Visted c
olour is
F0F0F0

Points to profile.htm

Points to singers.htm

Red

Purple

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<TITLE>AN EXAM HTML Document</TITLE>

1

<H2>Welcome to my first homepage.</H2>



1

<Font size=+1 color="red">About myself:</font>

1

<li><A href="profile.htm">My Profile</A>



0.5

<li><A href="singers.htm">My favourite Singer</
A>

0.5

<font size=+1 color="#FF00FF">My favourite Sites:</font>

1

<li><A href="http://www.tanghin.edu.hk">Tang Hin</A>


0.5

<li><A href="http://w3c.org">W3 Consortium</A>



0.5