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4th Unit

9th class Computer Chapter 4 (English Medium)

Here you can prepare 9th Computer Science chapter 4 online MCQ test with answers (Unit 4 Data Communication). Click the button for 100% free full practice test.

Matric Part 1/9th Class Computer Science Chapter 4 MCQ Test With Answer for Unit 4 Data Communication

Matric Part 1/9th Class Computer Science Chapter 4 MCQ Test With Answer for Unit 4 Data Communication

Sr. # Questions Answers Choice
1 Which means installing and selling unauthorized copies of software on refurbished or new computers ?
  • A. Confidentiality
  • B. Privacy
  • C. Online Privacy
  • D. Hard-disk loading
2 Encoding means conversion of the data to an unreadable format which is called:
  • A. Ciphertext
  • B. Online banking
  • C. Client
  • D. Encryption
3 NADRA stands for:
  • A. National Database and Registration Authority
  • B. National Database Resolution
  • C. Registration Authority
  • D. National Drugs Registration
4 Which is a way to protect an idea ?
  • A. Patent
  • B. Online banking
  • C. Client
  • D. Software piracy
5 In Roman Empire _______ method is used this method of encryption for sending messages to his soldiers and generals:
  • A. Service
  • B. Online banking
  • C. Client
  • D. Ceaser
6 In which method, we replace each alphabet in the plaintext by another alphabet:
  • A. Integrity
  • B. Cyber
  • C. Ceaser Cipher
  • D. Privacy
7 CAPTCHA stands for:
  • A. Completely Automated Public Turning
  • B. Completely Automated
  • C. Automated Public Turning
  • D. Automated
8 Which is the process of encoding data ?
  • A. Service
  • B. Online banking
  • C. Client
  • D. Encryption
9 Which is a serious attack on a computer system ?
  • A. Hacking
  • B. Sabotage
  • C. Passwords
  • D. Decryption
10 Illegally accessing someone else's computer is called:
  • A. Hacking
  • B. Sabotaged
  • C. Passwords
  • D. Decryption

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