West Bengal PSC Previous Year Computer Questions with Answers

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West Bengal PSC Previous year computer questions with detail solutions.

In this post we list West Bengal Public Service Commission's (WBPSC) previous year Computer related questions and answer with detail explanation.

In fact, it is the part of our WBPSC Previous Year Science Questions with Solution series.

Visit WBPSC Previous Year PHYSICS Questions with Solution  Part-1,  Part-2,  Part-3,  Part-4.

Visit WBPSC Previous Year CHEMISTRY Questions with Solution
Part-1

Q. Errors in computer program is called                [WBCS Preliminary Exam-2018]

  1. Spam
  2. Follies
  3. Virus
  4. Bugs

D. Bugs

Explanation: 

  • Spam is unsolicited message sent in huge number through internet or any electronic messaging system.
  • An English word "Folly" means foolishness.
    Plural form of "folly" is follies.
  • Virus: In computer, virus is a program which is installed without user's knowledge and it does various malicious activities.
  • Bug: In computer terminology bug refers to the error, fault in program.


Q. USB is which type of storage device?          
[WBCS Preliminary Exam-2018]

  1. Primary
  2. Secondary
  3. Tertiary
  4. None of the above

B. Secondary

Explanation: 

  • Primary storage: Primary storage is the main storage of the computer which can be directly accessed by the CUP (Central Processing Unit).
    Primary storage is volatile i.e. after shutting down the computer all data are erased from it.
    RAM (Random Access Memory) is a example of Primary storage.

  • Secondary storage: Secondary storage is the storage which is used to store different programs and data permanently.
    Secondary storage is non-volatile i.e. after shutting down the computer, data doesn't lost.
    Example of secondary storage: Hard disk, USB flash drive, CD, DVD etc.

  • Tertiary storage: Tertiary storage comprises high-capacity data archives designed to incorporate vast numbers of removable media such as tapes or optical discs. 
Full form of USB is Universal Serial Bus. Actually it is not storage device. We can say USB port, USB storage etc. Generally, we use storage devices like Pendrive, external hard disk etc. through USB port.

Q. A combination of 16 bits is called              [WBCS Preliminary Exam-2018]

  1. word
  2. nibble
  3. memory block
  4. byte

A. word

Explanation: Bit is a unit of memory in computer. A bit can hold one or two values 0 or 1.

1 nibble = 4 bit

1 Byte = 8 bits 

1 word = 16 bits

Q. Which is not a social networking site?           
[WBCS Preliminary Exam-2018]

  1. Linkedin
  2. Wink
  3. Facebook
  4. Google Plus

B. Wink

Explanation: Social media is a virtual platform where the users can create, share the information with the other users.
Some of the popular social media are: Facebook, LinkedIn, Google Plus (discontinued from April2,2019), Twitter, WeChat, Instagram, Baidu Tieba (mostly used in China), Tumbler etc.

Q. Which among the following is commonly used language in Android application?         
[WBCS Preliminary Exam-2018]

  1. Java
  2. C++
  3. C
  4. PHP

A. Java

Explanation: Java was the official language for Android app development. Hence, it is most used language in Android application development.
Now, since 2019, "Kotlin" is the official language for Android app development. It is easy to learn and Google is encouraging to use Kotlin for Android app development. Hence, use of Kotlin for android app development is gradually increasing.

Q. The binary equivalent of decimal number 4.625 is          
[WBCS Preliminary Exam-2021]

  1. 100.001
  2. 100.110
  3. 100.101
  4. 100.011

C. 100.101

Explanation:
Here, 4.625 is a decimal number. So, we have to convert this decimal number into binary.

BInary equivalent of 4.625 is 100.101
So, (4.625)10=(100.101)2
Binary equivalent of 4.625 is 100.101


 WBPSC Previous Year SCIENCE Series

WBPSC Previous Year PHYSICS Question with Solution

WBPSC Previous Year CHEMISTRY Questions with Solution

WBPSC Previous Year BIOLOGY Question with Solution 

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