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