Which of the following is used for modulation and demodulation ?
إجابة
(C)
Modem
2
When records are given a new value, it is called
إجابة
(A)
updation
3
The type of computers that are designed to perform complex calculations extremely rapidly are called ?
إجابة
(A)
supercomputer
4
A set of moral principles that regulate the use of computers is called
إجابة
(B)
computer ethics
5
The logic gate in the figure above is
إجابة
(C)
XOR gate
6
A computer code that spreads without the user interaction and can cause network performance problem is
إجابة
(B)
a computer worm
7
The following are input devices except.
إجابة
(B)
monitor
8
What category of application package does microsoft excel belong to ?
إجابة
(D)
Spreadsheet packages
9
A type of application software that combines the abilities of several general purpose applications in one program is ?
إجابة
(B)
Integrated Packages
10
What is the function of the escape key ?
إجابة
(C)
to interrupt or cancel the current process or running program
11
A set of programs that direct computers to perform specific information processing activities for end users is
إجابة
(C)
Application software
12
What protocol is used between Email servers?
إجابة
(A)
SMTP
13
The following are the methods of file security except
إجابة
(A)
hacking
14
The first step in a CPU instruction cycle is
إجابة
(C)
Fetch
15
Which of the following is not an example of graphics packages
إجابة
(B)
Quattro pro
16
The process of finding and correcting errors in the program code is called ?
إجابة
(B)
Debugging
17
Which of the following components of the computer is referred to as the administrative section ?
إجابة
(A)
CPU
18
Which of the following is not a third generation language?
إجابة
(C)
Assembly language
19
Which of these commands will reboot the computer ?
إجابة
(A)
Ctrl + Alt + Del
20
The type of database in which the data are connected in different files by using common data elements or a key field is ?
إجابة
(A)
Relational database
21
Anti-virus software is an example of ?
إجابة
(A)
Utility programs
22
What is the shortcut for creating a new document ?
إجابة
(A)
Ctrl + N
23
Which of these criteria is not important while classifying files ?
إجابة
(D)
Storage medium
24
Which of the following is a valid variable name in Python?
إجابة
(B)
my_variable
25
How many bits are in one nibble ?
إجابة
(B)
4
26
The only possible number base for 235\(_x\) among the following is ?
إجابة
(D)
6
27
At what stage in system development life cycle are all data documented in the form of detailed data flow diagrams(DFDs)
إجابة
(C)
System analysis
28
Translators are type of ?
إجابة
(A)
System software
29
What is the difference between an assembler and a compiler ?
إجابة
(B)
an assembler converts assembly level language code into machine language code while a compiler converts high level programming language code to a machine language code.
30
Which of these storage devices can act as a buffer between the CPU and the main memory ?
إجابة
(C)
Cache Memory
31
Evaluate \(1011_2 + 122_4\), leaving your answer in base 10.
إجابة
(A)
37
32
What part of the central processing unit coordinates other units and manages the computer resources ?
إجابة
(D)
Control unit
33
What does R stands for in the CRUD acronym ?
إجابة
(C)
Read
34
Which of these is not true about peer-to-peer network ?
إجابة
(B)
it has a strong security system
35
The Output will be a HIGH for any case when one or more inputs are one for a(an)
إجابة
(A)
OR gate
36
What type of booting does the computer go through when starting up from a powered down ?
إجابة
(A)
Cold booting
37
What type of booting does the computer go through when starting up from a powered down ?
إجابة
(A)
Cold booting
38
The connection between two or more computers to share resources or allow electronic communication is called ?
إجابة
(D)
Network
39
Which of the following is the standard keyboard layout ?
إجابة
(B)
QWERTY
40
Analog, digital and hybrid computers are classification of computers based on
إجابة
(A)
the type of data-handling techniques
41
Which of the following is not an application software
إجابة
(C)
Linux
42
Which of the following is NOT a high-level programming language?
إجابة
(A)
Assembly language
43
what is the first computing machine invented ?
إجابة
(D)
Abacus
44
The default file extension for PowerPoint version 2007 and newer is ?
إجابة
(D)
.pptx
45
Which of the following can be used to select the entire document ?
إجابة
(B)
Ctrl + A
46
Which of the following does not replicate itself in an infected computer?
إجابة
(C)
trojan horse
47
The last cycle of data processing where data and information are preserved for future is called
إجابة
(C)
storage
48
A device that sends and receives printed pages or images over telephone lines by digitizing the material with an internal optical scanner and transmitting the information as electronic signals is a
إجابة
(D)
fax machine
49
The first computer made available for commercial use was
إجابة
(A)
UNIVAC
50
An action performed in the GUI operating systems to hide a window but keep the program running in the background is ?
إجابة
(C)
minimize
51
What is the shortcut for performing warm booting ?
إجابة
(D)
by pressing the Ctrl + Alt + Del keys simultaneously
52
EDVAC was produced using which of these concepts ?
إجابة
(B)
stored program
53
When the computer reboots itself without triggering the hardware based reset, it is called ?
إجابة
(D)
soft reboot
54
Who invented the Napier Bones
إجابة
(A)
John Napier
55
What is the difference between internal and external modem
إجابة
(B)
internal modems are PCI or ISA expansion cards while external modems are traditionally plug into a serial port on the computer.
56
The two types of operating system are
إجابة
(A)
command line and graphical user interface
57
Which of these application packages can be used to create a spreadsheet ?
إجابة
(B)
Microsoft excel
58
In technical feasibility, the priority is ?
إجابة
(C)
whether the problem can be solved using existing technology and resources available
59
What generation of computer is characterized by the use of vacuum tubes for circuitry and magnetic drums for main memory?
إجابة
(C)
first generation
60
Large computers are classified as
إجابة
(D)
mainframe computers
61
Which of the following allows devices on one network to communicate with devices on another network ?
إجابة
(B)
gateway
62
The diagrammatic representation of an algorithm is
إجابة
(D)
flowchart
63
The process where a programmer converts a program specifications into computer instructions is called ?
إجابة
(B)
Coding
64
Which of these programming languages is the most suitable for a business data processing?
إجابة
(C)
COBOL
65
The term used to describe when new information replaces old information or data is
إجابة
(D)
overwrite
66
___ is the type of computer that is designed to operate on two states, 0 and 1.
إجابة
(C)
Digital computer
67
Which of the following is an example of graphics software ?
إجابة
(B)
Adobe Illustrator
68
which communication channel allows the sending of information in one direction only?
إجابة
(A)
simplex mode
69
Which of the following monitors has only two colours
إجابة
(D)
monochrome monitor
70
Computers manipulate data in many ways, and this manipulation is called ?
إجابة
(C)
processing
71
The computer that combines the functions of both analog and digital computers is called ?
إجابة
(C)
Hybrid computer
72
In BASIC, REM shows a statement to be
إجابة
(C)
comment
73
Computers that are small and low cost are referred to as ?
إجابة
(D)
micro computers
74
If the control unit controls other units of the CPU, which unit stores instructions,data and intermediate results.
إجابة
(A)
Memory unit
75
The closest computer language to human is ?
إجابة
(A)
High level language
76
Translating the problem statement into a series of sequential steps describing what the program must do is known as
إجابة
(B)
creating the algorithm
77
One of the following is not a good way to prevent virus.
إجابة
(C)
carelessly exposing your vital and personal information
78
The first stage of data processing activities is ?
إجابة
(B)
Collection
79
Using Boolean identities, reduce the given Boolean expression:
A(A+1) + A(B+0) + C.1
إجابة
(D)
A + C
80
In computer architecture, the type of bus that connects the major components of a computer system is
