CHIU LUT SAU MEMORIAL SECONDARY SCHOOL
Computer and Information Technology
Quiz 1 (Core: Ch.5~7)
Class: 4_____
Part A.
Class no: ______
ANSWER
Name: ___________________________ Mark: ___________/40
Multiple Choice Questions (20 marks)
1
2
3
4
5
6
7
8
9
10
B
C
D
C
D
C
A
B
A
C
11
12
13
14
15
16
17
18
19
20
C
B
D
B
A
C
A
D
B
D
1. What does the CPU do?
A. It shows the results of processing to users
B. It interprets and carries out instructions.
C. It stores data for future use.
D. It accepts data from user.
2. Which of the following about RAM is
INCORRECT?
A. It stores run-time data for CPU to process
B. The data in RAM can be modified
C. The storage size of RAM is fixed
D. Data in RAM will be gone when power off
3. The Arithmetic and Logic Unit (ALU) in CPU is
responsible for:
(I) Decision
(II) Calculation
(III) Comparison
A.
B.
C.
D.
(I) and (II) only
(II) and (III) only
(I) and (III) only
(I), (II) and (III)
4. A computer has a 32-bit data bus, which means
A. 256 data lines are used
B. 232 different addresses are used
C. 32 bits of data can be transmitted at a time
D. The CPU can handle 32 numbers at a time
5. USB (Universal Serial Bus) can connect:
(I) Laser Printer
(II) Image Scanner
(III) Speaker
A.
B.
C.
D.
(I) and (II) only
(II) and (III) only
(I) and (III) only
(I), (II) and (III)
6. Which of the following input devices allows direct
input?
A. Microphone
B. Graphic tablet
C. Barcode reader
D. Touch screen
7. Which of the following is NOT needed for
video-conferencing?
A. Image scanner
B. Digital camera or web cam
C. Microphone
D. Speaker or headphone
8. Which of the following is suitable for printing
multi-layer receipt?
A. Thermal printer
B. Dot-matrix printer
C. Ink-jet printer
D. Laser printer
9. Which of the following is equivalent to 1MB?
A. 1024 kB
B. 106 Byte
C. 0.001 GB
D. 1,024,000 Bytes
10. Which of the following storage media support
direct access of data?
(I)
Hard disk
(II)
Flash memory card
(III)
Magnetic Tape
(IV)
CD-ROM
A.
B.
C.
D.
(II) and (III) only
(I) and (III) only
(I), (II) and (IV) only
(I), (III) and (IV) only
11. Arrange the followings in descending order of
access time: i.e. long to short
(I)
Hard Disk
(II)
CPU Cache
(III)
RAM
A.
B.
C.
D.
(II), (III), (I)
(I), (II), (III)
(I), (III), (II)
(III), (I), (II)
12. Data stored on a CD-ROM can be read by
(I)
a CD-RW Writer
(II)
a ZIP drive
(III)
a DVD drive
(IV)
an MO drive
A.
B.
C.
D.
(I) only
(I) and (III) only
(II) and (IV) only
(I), (III) and (IV) only
13. Which of the following is not a specification of
hard disk drive?
A. Serial ATA interface
B. 2MB Cache
C. 7200 rpm rotational speed
D. 1.33 MHz clock rate
14. Which of the following interfaces are suitable for
connecting an external hard disk?
(I)
PCI
(II)
USB
(III)
IEEE1394
(IV)
PS/2
A.
B.
C.
D.
(I) and (II) only
(II) and (III) only
(II) and (IV) only
(III) and (IV) only
15. Which of the following characteristics of an image
scanner affect the quality of a captured image?
(I)
Color Depth
(II)
Resolution
(III)
USB 2.0 connection
(IV)
OCR Software included
A.
B.
C.
D.
(I) and (II) only
(II) and (III) only
(II) and (IV) only
(III) and (IV) only
16. Which of the following I/O devices are commonly
used by a cashier in a restaurant?
(I)
Optical character reader
(II)
Magnetic strip card reader
(III)
Thermal Printer
(IV)
Inkjet Printer
A.
B.
C.
D.
(I) and (III) only
(I) and (IV) only
(II) and (III) only
(II) and (IV) only
17. Which of the following is not a specification of
CPU?
A. 7200 rpm rotational speed
B. 3.4GHz clock rate
C. 64-bit word size
D. 2MB Cache
18. Nowadays, USB flash drive is getting more
popular because:
(I)
It is portable
(II)
It has a large storage
(III)
Modern computers support it
A.
B.
C.
D.
(I) only
(II) only
(I) and (II) only
(I), (II) and (III)
19. Which of the following is not a specification of
color laser printer?
A. 1200 x 1200 dpi resolution
B. 12ms response time
C. 16MB memory
D. USB 2.0 connectivity
20. Device X and Y are the same kind of peripheral
device, but the configurations are different.
Memory
CPU
Connectivity
Device X
128MB ROM
166 MHz
Parallel Port (ECP)
Device Y
64MB ROM
333 MHz
Serial Port (RS-232)
Which of the following is TRUE?
A. Both devices can be secondary storage
B. The physical size of Device X is larger than
that of Device Y
C. The processing speed of Device X is higher
than that of Device Y
D. The data transfer rate of Device X is higher
than that of Device Y
Part B. Short Questions (20 marks)
1. Describe the stages of a machine cycle of CPU.
(2 marks)
Fetch – An instruction is read/transferred from memory to CPU
Decode – Decodes/Interprets the instruction
Execute – Execute the instruction (by sending commands to other parts of the PC)
Store – Results of execution, if any, is stored to the memory
2.
3.
There are many ways to input text into a computer. Two of them are by keyboard and by
handwriting. Fill in the comparison table below. (6 marks)
By Keyboard
By Handwriting
Inputting
Speed
Faster / Higher
Slower / Lower
Hardware
Required
Keyboard
Handwriting Pad / Graphic Tablet /
Touch Screen
Software
Required
Nil / None
Handwriting (Character) recognition
software
State a pointing device that is commonly found in a notebook computer.
mouse is not suitable for the purpose. (2 marks)
Briefly explain why a
Touch pad / Pointing stick (TrackPoint) / Track ball [ANY ONE]
Mouse requires a flat surface to use
4.
What is the full name of OCR?
What does this technology do? (2 marks)
OCR = Optical Character Recognition
It recognizes text in an image and converts it into editable format
5.
Peter wants to connect an external DVD writer to his computer. (3 marks)
a) The DVD writer is not designed to connect to the parallel port. Why?
The data transfer rate of parallel port is not high enough (for writing data)
b) Give a port that is suitable for connecting external DVD writer.
c)
USB / IEEE 1394 (or FireWire, iLink) / eSATA
The DVD writer is labeled “8X 16X 52X”. The first two values refer to the data transfer rates
of writing data onto DVD-RW and DVD-R respectively. What does the third value refer to?
The data transfer rate of reading data from disc / writing data to CD-R/RW
6.
Mary wants to backup some video and music files. (3 marks)
a)
Which storage media, DVD-R or DVD-RW, do you suggest for the purpose?
Why?
DVD-R, lower cost per disc
OR: DVD-RW, disc can be re-used / files can be updated
b) Explain why floppy disk is not suitable for storing multimedia files.
Multimedia files are (usually) large
Capacity of floppy disk is too low or not high enough / Access speed is low
7.
David finds that his computer is getting slow. He wants to upgrade his computer. Suggest TWO
hardware upgrades for him.
(2 marks)
Replace the CPU with one of higher clock rate / Adding more RAM (memory) / Replace the
hard disk drive with one of higher rotational speed (or more disk buffer) [ANY TWO]
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