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Top 500+ New Computer Science Subject MCQs with Answers | Download PDF



Encircle the most appropriate answer from the following options

1.         The capacity of a storage device is expressed as the number of.

(a) Byte          

(b) Bits

(c) Character

(d) All these

2.         A bit can be.               

(a) I or 0         

(b) I and 0       

(c) I only

(d) 0 only

3.         The storing capacity of a computer is measured in.             

(a) Bit 

(b) Byte          

(c) Kilogram   

(d) Gigabyte

4.         Computer storage is basically divided into.

(a) Ram & Rom         

(b) Main memory & Secondary Storage

(c) Main memory & Hard disk           

(d) Floppy & Hard disk

5.         Main memory is an extension of.

(a) Ram          

(b) Rom          

(c) Hard disk  

(d) Both a & b

6.         Which memory provides very fast performance.

(a) Cache memory   

(b) Secondary memory

(c) Random access memory

(d) Read only memory

7.         If the memory of a computer is 32000 bytes. It means it can store how many characters.

(a) 32

(b) 32000

(c) 64.

(d) 2400

8.         Which among the following is referred to as volatile memory.

(a) Read only memory          

(b) Random access memory

(c) Flash memory      

(d) Cache memory

9.         Generally RAM (random access memory) is measured in.

(a) Bytes        

(b) K bytes     

(c) M bytes

(d) Both b and c

10. More RAM can make computers.           

(a) Expensive 

(b) Run slower

(c) Run fast

(d) None

11.       RAM is called volatile memory because the data stored in it.

(a) Don’t disappear whenever the computer turns off

(b) Disappear whenever the computer turns off.

(c) CPU can directly access the RAM

(d) It is very fast

12.       A variation of ROM is.

(a) Flash Memory      

(b) Cache Memory

(c) Programmable read only memory (PROM)    

(d) Direct access storage

13.       We can search any item by simply specifying.

(a) The hard disk tracks         

(b) ROM size

(c) Address in direct access storage

(d) None of the above

(d) Powerful

14.       The surface of a hard disk is logically divided into.

(a) Firmware

(b) None

(c) Physically marking tracks

(d) Pie-shaped sectors

15.       The number of sectors of a hard disk depends upon the.

(a) Density of the hard disk

(b) Speed of the motor

(c) Number of read/write head

(d) Capacity of RAM

16.       Typically the storage capacity of a sector can be.

(a) 512 bytes 

(b) 512 kilobytes

(c) Always 2 bits        

(d) 1 2 the capacity of RAM

17.       The capacity of a hard disk depends upon the.

(a). High speed motor

(b) Movement of read/write head

(c) Complexity of software    

(d) Number of disk platters

18.       Computer storage is also referred to as.

(a) Computer device

(b) Computer RAM

(c) Computer memory

(d) None of above

19.       Main memory performance is.

(a) Fast           

(b) Slow          

(c) Very fast

(d) None

20.       Auxiliary storage provides.

(a) Minimum capacity

(b) Maximum capacity

(c) Both a & b  .

(d) None

21.       Computer memory is.

(a) Mechanical File

(b) An electronic file

(c) both of above

(d) None

22.       1 represents the data.

(a) On

(b) Off

(c) both of above

(d) None

23.     Each byte contains.

(a) Information           

(b) I Character          

(c) both of above

(d) None

24.       Computer storage is divided into classes.

(a) Two          

(b) Three        

(c) Four

(d) Five

25.       Main memory is directly accessible by.

(a). CPU         

(b) Printer       

(c) Scanner

(d) Keyboard

26.       The basic information unit is called a.

(a) Character 

(b) Word         .

(c) Nibble

(d) None

27.       A word of 16 bits size can be called:

(a) 4 Byte word          

(b) I Byte word

(c) 2 Byte word

(d) 1 Nibble

28.       1 kilobyte equals

(a) 212 byte     

(b) 220 byte     

(c) 210  byte

(d) 230  byte

29.       The ROM has types.

(a) Two           

(b) Three       

(c) PROM


30.       When the power shuts off the contains are lost.

(a) From ROM           

(b) From RAM           

(c) Both of above

(d) None

31.       The most common RAM technologies are.

(a) Two          

(b) Three        

(d) Four

(d) Five

32.       The much more expensive and requires more space and power.

(a) RAM

(b) SRAM

(c) DRAM

(d) ROM

33.       The capacity of RAM affects the computer.

(a) Size           

(b) Length       

(c) Power

(d) Life

34.       DRAM needs to be refreshed

(a) Periodically         

(b) Hourly       

(c) Weekly

(d) Yearly

35.       DRAM is most commonly used technology to build

(a) Software’s

(b) Dynamic RAM     

(c) RAM chips

(d) Static RAM

36. Which RAM is faster?

(a) SRAM      

(b) DRAM      

(c) PRAM

(d) Both (a) & (b)

37. SRAM is known as the

(a) Main memory       

(b) Secondary memory         

(c) Cache memory

(d) None

38.       MSB stands for

(a) Microsoft significant byte 

(b) Most significant byte

(c) Microsoft significant bit    

(d) Most significant bit

39.       In EEPROM data is erased by

(a) Magnetically devices        

(b) Electrical devices

(c) Electrochemical devices  

(d) None

40.       Which RAM is less expensive?

(a) SRAM       

(b) DRAM

(c) PRAM   

(d) Both (a) & (b)

41. Which disk is mostly used for transferring data  

(a) Floppy disk         

(b) Hard disk

(c) CD   

(d) DVD

42. The most common size of floppy disk is 

(a) 2.5″

(b) 3.5

(c) 4.5″

(d) 5.5″

43. Floppy disk is encased in a rigid  

(a) Aluminum case

(b) Iron body

(c) Envelope   

(d) Silicon case

44. A floppy disk is a storage medium

(a) Electric     

(b) Electronic

(c) Chemical   

(d) Magnetic

45. Floppy disks         

(a) Are slower but less expressive     

(b) Have less storage capacity

(c) Are portable

(d) All of these

46. Basic sizes of floppy disks are    

(a) 8-inch        

(b) 5 1/4 —inch          

(c) 3 1/2-inch  

(d) All of these

47. Which size of floppy disk is most commonly used

(a) 8-inch        

(b) 5 1/4 -inch 

(c) 3 1/2-inch 

(d) 1 1/4 -inch

48. How many hard disks digital computers use

(a) One           

(b) At most one          

(c) At least one         

(d) None

49. Typically a track is divided into sectors

(a) 1

(b) 5

(c) 7

(d) 8

50. A sector usually contains a fixed number of bytes of data i.e.

(a) 256 bytes  

(b) 512 bytes 

(c) 28 bytes    

(d) 1024-bytes