Which of the following represents features of a computer?
I. It is constructed from electronics components.
II. It has self regeneration capability.
IlI. It has facility for storage of data and programs.
IV. It has provision for input and output data.
Trả lời
(C)
I, IIl and IV only
3
Arrange in a hierarchical order by date, the following inventions: I. slide rule; Il. pascaline; IIl, analytical engine; v. difference engine.
Trả lời
(A)
I, lI, IV and llI
4
Which of the following is true about raw data?
Trả lời
(D)
It cannot be relied on to make decision.
5
Which of the following was used by Joseph Marie Jacquad in inventing the Loom?
Trả lời
(A)
Punched card
6
Which generation of computers used vaccum tubes in their circuitry?
Trả lời
(A)
First generation
7
The full meaning of the acronym ENIAC is?
Trả lời
(B)
Electronic Numerical Integrator and Computer
8
The primary memory of the computer can be divided into?
Trả lời
(D)
random access memory and read only memory.
9
A common communication pathway shared by hard- ware components in the computer is called?
Trả lời
(A)
bus
10
Which of the following can be described as the brain of the computer hardware?
Trả lời
(B)
microprocessor
11
Which of the following is not a computer output device?
Trả lời
(A)
Disk
12
Data to be processed by the microprocessor is temporarily stored in the?
Trả lời
(D)
random access memory.
13
The smallest unit of information representation which is addressable on the computer memory is?
Trả lời
(D)
8 bits
14
Software is referred to as the?
Trả lời
(A)
generic term for computer programs
15
The software whose output is intended for the human user is called?
Trả lời
(A)
application software
16
The parts of the taskbar include: I recycle bin Il start button lII system tray IV quick launch toolbar
Trả lời
(C)
II, Il and IV only
17
The similarities between main memory and registers is that they are: I volatile Il under the direct control of the user ll protected by the system unit lIV for system
use only?
Trả lời
(B)
I, Ill and IV only
18
A pictorial representation of the logic of a program is called?
Trả lời
(B)
flowchart
19
A subroutine is called in a flowchart through the use of?
Trả lời
(C)
process
20
The symbol used to represent an execution flow in a flowchart is?
Trả lời
(D)
D
21
A suitable BASIC notation for the expression mc\(^2\) is?
Trả lời
(A)
m * c^2
22
Use the BASIC program below to answer questions 23 to 25
10 LET K = 2
20 LET L = 9
30 LET SUM = 0
40 FOR J = K TO STEP 2
50 SUM = SUM + J\(^2\)
60 PRINT "ANSWER =", SUM
70 NEXT J
80 END
How many times will the statement lines 50 and 60 be repeated?
Trả lời
(C)
4
23
Which of the following best represents the sequence of output from the program?
Trả lời
(D)
4, 20, 56, 120
24
Use the BASIC program below to answer this question
10 LET K = 2
20 LET L = 9
30 LET SUM = 0
40 FOR J = K TO STEP 2
50 SUM = SUM + J2
60 PRINT "ANSWER =", SUM
70 NEXT J
80 END
The last output that will be displayed by the program is
Trả lời
(D)
120
25
Which of the following networks can be extended to cover continents?
Trả lời
(C)
Wide Area Network
26
Identify the browsers in the following list:
I telnet II netscape navigator.ll opera IV mozilla firefox
Trả lời
(C)
Il, Ill and IV,only
27
Trap doors and bombs are typical examples of?
Trả lời
(D)
trojan horses
28
The first four steps required to open e-mail account include:
I click on "Create my account"
II go to home page of the service provider
lll click "create new account"
IV click on "mail"
Trả lời
(C)
II, IV, Ill and I
29
The two main components of a radio communication system are?
Trả lời
(C)
transmitter and receiver
30
Which of the following can a traveler who finds himself in a new environment rely on for direction to his final destination?
Trả lời
(C)
GPS
31
The default number of sheets of a workbook is?
Trả lời
(C)
three
32
The chart type that does not have the X and Y axis display is the?
Trả lời
(C)
pie chart
33
When a worksheet is deleted from a workbook, it is?
Trả lời
(B)
sent to the recycle bin
34
A block of text that is marked by the tab key when the enter key is pressed can be referred to as?
Trả lời
(B)
paragraph
35
Principal uses of word processing software packages include:
I preparing deft articles for publication
ll pre- paring reports for top management
Ill preparing accounts
IV preparing organizations' newsletter.
Trả lời
(B)
I, II and IV only
36
In a database, a primary key is a field which contains?
Trả lời
(B)
unique entries
37
One megabyte is equivalent to?
Trả lời
(A)
one million bytes
38
Converting 4B7\(_16\) to binary?
Trả lời
(C)
0100 1000 0111,
39
The speed of data transfer in the computer can be determined in terms of ?
Trả lời
(C)
bus speed and storage media
40
The initial screen that is displayed after a computer booting is referred to as?
Trả lời
(A)
desktop
41
Which of the following is not a biometric data?
Trả lời
(B)
password
42
The main advantage of intellectual property right is?
Trả lời
(A)
maximization of profit
43
The word bit refers to?
Trả lời
(A)
the value zero or one
44
The decimal number 1024 in hexadecimal equivalent is?
Trả lời
(B)
400
45
Which of the following is true of a digital logic gate?
