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.
Απάντηση
(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.
Απάντηση
(A)
I, lI, IV and llI
4
Which of the following is true about raw data?
Απάντηση
(D)
It cannot be relied on to make decision.
5
Which of the following was used by Joseph Marie Jacquad in inventing the Loom?
Απάντηση
(A)
Punched card
6
Which generation of computers used vaccum tubes in their circuitry?
Απάντηση
(A)
First generation
7
The full meaning of the acronym ENIAC is?
Απάντηση
(B)
Electronic Numerical Integrator and Computer
8
The primary memory of the computer can be divided into?
Απάντηση
(D)
random access memory and read only memory.
9
A common communication pathway shared by hard- ware components in the computer is called?
Απάντηση
(A)
bus
10
Which of the following can be described as the brain of the computer hardware?
Απάντηση
(B)
microprocessor
11
Which of the following is not a computer output device?
Απάντηση
(A)
Disk
12
Data to be processed by the microprocessor is temporarily stored in the?
Απάντηση
(D)
random access memory.
13
The smallest unit of information representation which is addressable on the computer memory is?
Απάντηση
(D)
8 bits
14
Software is referred to as the?
Απάντηση
(A)
generic term for computer programs
15
The software whose output is intended for the human user is called?
Απάντηση
(A)
application software
16
The parts of the taskbar include: I recycle bin Il start button lII system tray IV quick launch toolbar
Απάντηση
(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?
Απάντηση
(B)
I, Ill and IV only
18
A pictorial representation of the logic of a program is called?
Απάντηση
(B)
flowchart
19
A subroutine is called in a flowchart through the use of?
Απάντηση
(C)
process
20
The symbol used to represent an execution flow in a flowchart is?
Απάντηση
(D)
D
21
A suitable BASIC notation for the expression mc\(^2\) is?
Απάντηση
(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?
Απάντηση
(C)
4
23
Which of the following best represents the sequence of output from the program?
Απάντηση
(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
Απάντηση
(D)
120
25
Which of the following networks can be extended to cover continents?
Απάντηση
(C)
Wide Area Network
26
Identify the browsers in the following list:
I telnet II netscape navigator.ll opera IV mozilla firefox
Απάντηση
(C)
Il, Ill and IV,only
27
Trap doors and bombs are typical examples of?
Απάντηση
(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"
Απάντηση
(C)
II, IV, Ill and I
29
The two main components of a radio communication system are?
Απάντηση
(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?
Απάντηση
(C)
GPS
31
The default number of sheets of a workbook is?
Απάντηση
(C)
three
32
The chart type that does not have the X and Y axis display is the?
Απάντηση
(C)
pie chart
33
When a worksheet is deleted from a workbook, it is?
Απάντηση
(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?
Απάντηση
(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.
Απάντηση
(B)
I, II and IV only
36
In a database, a primary key is a field which contains?
Απάντηση
(B)
unique entries
37
One megabyte is equivalent to?
Απάντηση
(A)
one million bytes
38
Converting 4B7\(_16\) to binary?
Απάντηση
(C)
0100 1000 0111,
39
The speed of data transfer in the computer can be determined in terms of ?
Απάντηση
(C)
bus speed and storage media
40
The initial screen that is displayed after a computer booting is referred to as?
Απάντηση
(A)
desktop
41
Which of the following is not a biometric data?
Απάντηση
(B)
password
42
The main advantage of intellectual property right is?
Απάντηση
(A)
maximization of profit
43
The word bit refers to?
Απάντηση
(A)
the value zero or one
44
The decimal number 1024 in hexadecimal equivalent is?
Απάντηση
(B)
400
45
Which of the following is true of a digital logic gate?
