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440+ Important Computer MCQs For Competitive Exams part 2 Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Common Topics in Competitive and Entrance exams , Union Public Service Commission (UPSC) , Indian Administrative Service (IAS) .

1.

Which of the following is the primary output device for computers?

A. Video monitor
B. Printer
C. Keyboard
D. Mouse
E. None of these
Answer» A. Video monitor
2.

A directory within a directory is called

A. Mini Directory
B. Junior Directory
C. Part Directory
D. Sub-Directory
E. None of these
Answer» D. Sub-Directory
3.

In windows XP, which shorcut is used to cycle through opened items in taskbar?

A. Ctrl + Tab
B. Alt + Tab
C. Ctrl + Esc
D. Alt + Esc
E. None of these
Answer» D. Alt + Esc
4.

Stored data in which of the following remains intact even after the computer is turned off?

A. RAM
B. Motherboard
C. Secondary Storage Device
D. Primary Storage Device
E. None of these
Answer» C. Secondary Storage Device
5.

SMTP, FTP and DNS are applications of the ________ layer.

A. Data link
B. Network
C. Transport
D. Application
E. None of these
Answer» D. Application
6.

Which of the following is not a common feature of software applications?

A. Menus
B. Windows
C. Help
D. Search
E. None of these
Answer» B. Windows
7.

In MICR, C stands for

A. Code
B. Colour
C. Computer
D. Character
E. None of these
Answer» D. Character
8.

A _______ computer is a large and expensive computer capable of simultaneously processing data for hundreds or thousands of users.

A. server
B. mainframe
C. desktop
D. tablet
E. None of these
Answer» B. mainframe
9.

The trend in computer systems is towards the use of graphical user interfaces (GUIs). In these operating systems, a track ball is described as

A. a roller ball which moves the cursor.
B. a pen-shaped device which allows data to be entered through the CRT screen.
C. a figure which resembles a familiar office device.
D. an outdated input device.
E. None of these
Answer» A. a roller ball which moves the cursor.
10.

The _______ folder retains copies of messages that you have started but are not yet ready to send

A. Inbox
B. Outbox
C. Drafts
D. Sent Items
E. Address Book
Answer» C. Drafts
11.

The ability of an OS to run more than one application at a time is called

A. multitasking
B. object-oriented programming
C. multiuser computing
D. time-sharing
E. None of these
Answer» A. multitasking
12.

Which of the following is an example of non-numeric data?

A. Employee address
B. Examination score
C. Bank balance
D. All the above
E. None of these
Answer» E. None of these
13.

Coded entries which are used to gain access to a computer system are called

A. Entry codes
B. Passwords
C. Security commands
D. Codewords
E. None of these
Answer» B. Passwords
14.

To move to the bottom of a document, press

A. Insert key
B. Home key
C. Ctrl key + End key
D. End key
E. None of these
Answer» C. Ctrl key + End key
15.

A device that is connected to the motherboard is _______.

A. called an external device.
B. called an adjunct device.
C. called a peripheral device.
D. connected using ribbon cable.
E. None of these
Answer» C. called a peripheral device.
16.

An error is also known as

A. bug
B. debug
C. cursor
D. icon
E. None of these
Answer» A. bug
17.

What type of device is a keyboard?

A. Black
B. Input
C. Output
D. Word processing
E. None of these
Answer» B. Input
18.

Arithmetic operations

A. involve matching one data item to another to determine if the first item is greater than, equal to or less than the other item.
B. sort data items according to standard, predefined criteria in ascending or descending order.
C. use conditions with operators such as AND, OR and NOT.
D. include addition, subtraction, multiplication and division.
E. None of these
Answer» D. include addition, subtraction, multiplication and division.
19.

Which part of the computer helps to store information?

A. Disk drive
B. Keyboard
C. Monitor
D. Printer
E. None of these
Answer» A. Disk drive
20.

Which of the following is the default mask of a class A IP address?

A. 255.0.0.255
B. 255.255.0.0
C. 255.0.0.0
D. 255.255.255.0
E. None of these
Answer» C. 255.0.0.0
21.

What is Internet ?

A. A new type of cabling system for Wide Area Networks
B. A second local area network that can connect with another online LAN to share access
C. A new standard for Internet browsers
D. An association to develop advanced Internet technology
E. None of these
Answer» D. An association to develop advanced Internet technology
22.

To drop a column that is used as a foreign key, first

A. drop the primary key.
B. drop the table.
C. drop the foreign key constraint.
D. All the above
E. None of these
Answer» C. drop the foreign key constraint.
23.

The name given to a document by user is called

A. Filename
B. Program
C. Data
D. Record
E. None of these
Answer» A. Filename
24.

________ is a procedure that requires users to enter an identification code and a matching password.

A. Paging
B. Logging on
C. Time sharing
D. Multitasking
E. None of these
Answer» B. Logging on
25.

Which device is used as the standard pointing device in a Graphical User Environment?

A. Keyboard
B. Mouse
C. Joystick
D. Track ball
E. None of these
Answer» B. Mouse
26.

The Assistant is

A. an application that allows you to take notes and save them in a file.
B. an animated character that provides help and suggestions.
C. a button on the standard Toolbar that executes the Print command.
D. a collection of frequently misspelled words in a dictionary file.
E. None of these
Answer» B. an animated character that provides help and suggestions.
27.

A CPU contains

A. a card reader and a printing device.
B. an analytical engine and a control unit.
C. a control unit and an arithmetic logic unit.
D. an arithmetic logic unit and a card reader.
E. None of these
Answer» C. a control unit and an arithmetic logic unit.
28.

The ability of an OS to run more than one application at a time is called

A. multitasking
B. object-oriented programming
C. multi user computing
D. time-sharing
E. None of these
Answer» A. multitasking
29.

Permanent instructions that the computer uses when it is turned on and that cannot be changed by other instructions are contained in

A. ROM
B. RAM
C. ALU
D. REM
E. None of these
Answer» A. ROM
30.

What are .bas, .doc and .htm examples of?

A. Databases
B. Extensions
C. Domains
D. Protocols
E. None of these
Answer» B. Extensions
31.

The vast network of computers that connects millions of people all over the world is called

A. LAN
B. Web
C. Hypertext
D. Internet
E. None of these
Answer» D. Internet
32.

The property that when classes are arranged in a hierarchy, each class assumes the attributes and methods of its ancestors is called

A. generalisation
B. inheritance
C. encapsulation
D. information hiding
E. None of these
Answer» B. inheritance
33.

The software component of an expert system that draws conclusions is the

A. user interface
B. database
C. inference engine
D. I/O controller
E. model base
Answer» C. inference engine
34.

The attributes and methods for each object are stored in

A. an object instance
B. an object connection
C. an assembly structure
D. an object repository
E. None of these
Answer» D. an object repository
35.

One advantage of dial-up Internet access is

A. it utilises broadband technology.
B. it utilises existing telephone service.
C. it uses a router for security.
D. modem speed is very fast.
E. None of these
Answer» B. it utilises existing telephone service.
36.

What is backup?

A. Adding more components to your network
B. Protecting data by copying it from the original source to a different destination
C. Filtering old data from the new data
D. Accessing data on tape
E. None of these
Answer» B. Protecting data by copying it from the original source to a different destination
37.

Which of the following is true ?

A. Byte is a single digit in a binary number.
B. Bit represents a grouping of digital numbers.
C. An eight-digit binary number is called a byte.
D. An eight-digit binary number is called a bit.
E. None of these
Answer» C. An eight-digit binary number is called a byte.
38.

A hard copy of a file created on a computer refers to data

A. saved on a floppy disk.
B. printed on a printer.
C. backed up on a tape drive.
D. sent as an e-mail.
E. None of these
Answer» B. printed on a printer.
39.

A ______ is an organised collection of data about a single entity.

A. file
B. library
C. database
D. dictionary
E. None of these
Answer» A. file
40.

Something which has easily understood instructions is said to be

A. user-friendly
B. information
C. word processing
D. icon
E. None of these
Answer» A. user-friendly
41.

Hardware devices that are not part of the main computer system and are often added later to the system are called

A. clip art
B. highlight
C. execute
D. peripherals
E. None of these
Answer» D. peripherals
42.

All of the following are examples of real security and privacy risks except

A. Hackers
B. Spam
C. Viruses
D. Identity theft
E. None of these
Answer» B. Spam
43.

If you want to move an icon on your desktop, this is called

A. double clicking
B. highlighting
C. dragging
D. pointing
E. None of these
Answer» C. dragging
44.

A computer checks the ________ of usernames and passwords for a match before granting access.

A. website
B. network
C. backup file
D. database
E. None of these
Answer» D. database
45.

Computers that are portable and convenient for users who travel are known as

A. supercomputers
B. laptops
C. minicomputers
D. file servers
E. None of these
Answer» B. laptops
46.

A MODEM is connected in between a telephone line and a

A. Network
B. Computer
C. Communication Adapter
D. Serial Port
E. All of these
Answer» B. Computer
47.

Windows is ________ and Window 95, Window 98 are________.

A. Graphical User Interface, Operating System
B. Graphics Useful Interface, Executing Systems
C. Graph User Interval, Expert Systems
D. Graphical Use Interphase, Excel Systems
E. None of these
Answer» A. Graphical User Interface, Operating System
48.

Which of the following is the most widely used input device?

A. Mouse
B. Keyboard
C. Modem
D. Monitor
E. None of these
Answer» B. Keyboard
49.

The blinking symbol which indicates the next position of the character is called

A. Delete key
B. Control key
C. Cursor
D. Return key
E. None of these
Answer» C. Cursor
50.

A small figure which depicts some application on the screen is called

A. Menu
B. Photo
C. Modem
D. Icon
E. None of these
Answer» D. Icon

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