Selected MCQ

Current Question
How many characters in the ASCII 8-bit code can be represented?
  • A. 1000 characters
  • B. 256 characters
  • C. 390 characters
  • D. 256 characters
Correct Answer: D
Explanation:
8-bit ASCII can represent 256 different characters.
Related Question 1
Computers that are used in large organizations such as insurance companies and banks, where many people frequently need to use same data, are ____.
  • A. Mainframe computers
  • B. Supercomputers
  • C. Hybrid computers
  • D. Desktop computers
Correct Answer: A
Explanation:
Mainframe computers are designed for high-volume data processing in large organizations.
Related Question 2
Computers manipulate data in many ways, and this manipulation is called ____.
  • A. Upgrading
  • B. Processing
  • C. Batching
  • D. Utilizing
Correct Answer: B
Explanation:
Data manipulation by a computer is called processing.
Related Question 3
Collection of characters, numbers, and symbols is called ____.
  • A. Data
  • B. Keyboard
  • C. Monitor
  • D. Ram
Correct Answer: A
Explanation:
Raw characters, numbers, and symbols together form data.
Related Question 4
Codes consisting of lines of varying widths or lengths that are computer-readable are known as ____.
  • A. An ASCII code
  • B. A magnetic tape
  • C. An OCR scanner
  • D. A bar code
Correct Answer: D
Explanation:
Barcodes are machine-readable codes made of varying-width lines.
Related Question 5
Coded entries which are used to gain access to a computer system are called ____.
  • A. Entry codes
  • B. Passwords
  • C. Security commands
  • D. Code words
Correct Answer: B
Explanation:
Passwords are secret codes used to authenticate and gain access to a system.