Computer Science class 9

Control panel allows you to customize which of the following feature?

Computer virus is simply a?

The OS windows was introduced by?

Which statement is not true for windows?

A mouse controls Icons by a?

The controlled area on the screen is called?

What will be the storage capacity of floppy disk of 3.5 inch is?

The disk drive labeled with B: specified the?

This option allows installation and removal of printers from the computer?

The function of antivirus is?

Which of the following is not a windows application?

 Which of the following is not the function of OS?

Shutdown command?

Ms Windows is a?

Which of the following disk may have multiple partitions?

In a file ABC.txt the file extension is?

Antivirus is?

Kelz is a?

Windows is a?

The file extension of sound file is?

The file created in Microsoft Access database is?

Which of the following operating systems is commonly used in personal computers?

The Windows operating system is used in personal computers about?

Desktop view is?

Start is?

Which among the following is not an icon?

Folders are?

What appears after we turn on a computer and load windows?

Major source of virus is?

It may be a program or a set of program that can cause extensive damage to your computer system?

Which of the following functions is difficult with a mouse?

Hourglass shape of mouse pointer indicates?

On the right side for?

Which of the following is used to change the system defaults or properties of the computer?

To change the background of the desktop ..... on the desktop?

Once the selected program starts, a small icon appears on the?

The bar at the bottom is?

The menu having options like programs, favorites, documents, setting, find, run etc is?

What are called the small computer programs which are used to destroy other computer programs?

The first thing which we see after logging into the computer is?

GUI is more?

Which of the following is not the control menu?

We can shutdown computer by pressing?

What are called the small computer programs which are used to protect computers?

GUI stands for?

It launches the internet explorer browser?

Which of the following is true about a floppy disk?

Which of the following icons of windows is used to access different disk drives of computers?

It offers an easy to reach location where we can store and retrieve important data?

In my computer we can access?

DOS is a?

The DOS command for creating a new subdirectory is?

System software can be subdivided into?

Clearing the screen?

Finding the DOS version?

Multi user operating and Multitasking operating system?

REN command?

Application software can be subdivided into?

GUI stands for?

Which of the following is not an example of application software?

Which of the following is not an example of system?

The system software is used to control the?

Operating system is a software?

Set of programs that coordinate the computers software and hardware is called?

Example of command line interface is the command prompt provided by?

“It reduces the size of stored text files.” The statement is true for which of the following choices?

The interface provided by a matrix of row and column for manipulate with numeric data is called?

UNIX is a?

DOS is a user operating system?

Which of the following operating systems does not provide networking features?

Which of the following does not contain instructions in machine language?

NT stands for?

Which DOS command is used to delete one or more specified files from the disk?

Which software controls basic I/O devices?

Which is the most user-friendly OS?

Which of the following file contains DOS internal command?

How many types of DOS commands are there?

UNIX operating system is developed in language?

Disk operating system are named because of the fact that they?

Floppy disk drive is recognized by?

The special files of DOS are?

If A:My is written on DOS prompt it means?

 C:binyour.bat means?

 Which of the following DOS commands is used to change from current directory to the root of the drive?

Which of the following DOS commands is used to make a new directory?

Which of the following commands is used to delete a directory?

How many wildcards are used in DOS?

Dir can have which of the following parameters?

Prompt St means?

To view all files in the current directory that has names containing the characters “ab” and having extension “exe” the command is written as?

Which command is used to copy one or more files and subdirectories in a directory?

Which command is used to delete all files and subdirectories in a directory?

Which command is used in DOS to display the volume label and serial number if they exist?

The command DIR???.* displays files that have?

 Which of the following commands is used to set or reset attributes of files?

The general syntax of DATE command is DATE [mm-dd-yy] in which the value of mm may be?

Which of the following command is used to see the volume label and serial number of disk?

How many characters can be used to assign a volume label of a disk?

Which of the following commands is used to check errors on the disk and to fix these errors?

Which of the following commands is used to display the directory structure of a drive or path?

Boolean algebra was formulated by English Mathematician George Boole in?

If Z is a Boolean variable then its value can be?

Which of the following are basic logical operators in Boolean algebra?

The operator that gives complement of the given value is called?

If A = 1 and B = 0 then A And B = ?

Boolean Algebra is the __ of logic?

..... uses symbols to represent logical statements instead of words?

If A = 1,B = 0 then A and B = ?

If A =1, B=1, C=O then A+B+C = ?

If A = 1 ,B =0, C = 1 then X = A + B + C ?

A + B = B + A and A . B = B. A represents which of the following?

Boolean Algebra was formulated by the ?

According to distributive law A . (B + C ) = ?

According to Existence of identity element A . 1 ?

As per Existence of inverse A + A Z ?

Computer chips are made up of ?

According to inverse the output will be 0 if ?

Boolean Algebra consists of In Boolean Algebra each variable at one time can take how many values?

AND operator represent ?

In Boolean algebra each variable at a time can take how many values?

Which is called an unary operator?

All electronic devices consist of circuits of?

A switch at any given time is in one of the states?

Which operator is used for logical multiplication?

Which of the following operations are used by the Boolean Algebra?

Logical addition refers to operation of ?

A serial circuit is represented by ?

Boolean Algebra derives its name form the British mathematician?

 A Boolean variable can only have one of the two values?

An OR gate has at least inputs ?

An AND gate has at least inputs ?

A parallel circuit is represented by ?

Two valued Boolean Algebra is a set that has elements and operations

In order to get high output in AND gate all the input must be?

The output of the NOT gate is always the ......of the original value?

Which of the following is a proposition?

In the representation of Boolean function, the A bar is assigned the value?

The table that represents the output of a Boolean expression for all possible combination of input is called?

Which of the following logical operator is denoted by + sign ?

Boolean Algebra deals with ?

Truth table show all possible combinations of ?

Boolean operators and Boolean variables combine to form Boolean ?

Who did overcome the disadvantages of Boolean algebra laws for simplification of expression?

Which is Boolean constant ?

 X, Y are called ?

we can use it to change the order of evaluation of operations in a Boolean expression?

A truth table of a two variable expression will always have?

 f ( x, y ) = x + y is a ?

Standard product is known as?

Standard sum is known as?

The ASCII is a code?

The EBCDIC is a code?

The collection of facts and figures is called?

The data after processing is called?

The set of characters including 26 characters of English alphabets and 10 decimal digits is called?

Computers directly understand digits?

Computer did not directly understand?

45, 26, 15, 40 is a?

Data is classified into typed?

Binary numbers are?

Real data contains numbers, which may be?

The base of decimal number system is?

The data is represented on a computer by means of a two state ON and OFF system called?

The base of binary number system is?

The base of octal number system is?

The binary number system is used in?

The base of hexadecimal number system is?

Alphanumeric characters are expressed in terms of binary codes. In ASCII each character is represented as a?

2’s complement of 1011.1 is?

I’s complement of 1011.1 is?

A byte consist of nibbles?

10° =?

The digit from 0 to 9 are called?

The binary equivalent of ( 20)₁₀ is?

The decimal equivalent of ( 20)₁₀ is?

Decimal number system consists of?

453 =?

The decimal equivalent of (10)_s is?

(236)₁₀ = (?) _{10 ?}

(A)₁₆ =?

In 645 the most significant digit is?

In 724 the least significant digit is?

The number system that contains the range of 10 number and 6 alphabets is?

(0001)₂ = (?)

Binary digits are denoted by?

01001₍₂₎ in decimal system is equal to?

I’s complement of 01110 is?

In binary number system 0 + 0 =?

In binary number system 1 X 0 =?

ASCII for 6 is equal to?

Which of the following is not a real number?

In Hexadecimal number system the value of E is?

The value of hexadecimal digit A is ?

The number 822 represent the?

Add 01011101 and 00110010?

The binary equivalent of decimal number (3)₁₀ is?

The binary equivalent of (F)16 is ?

The hexadecimal equivalent of binary number (101001)₂ is?

The most commonly used character for transmission are?

In scientific notation power of 10 is called?