Selected MCQ

Current Question
How can you ensure the security of electronic data in databases?
  • A. Implementing encryption
  • B. Using graphic design
  • C. Regularly updating software
  • D. Increasing database size
Correct Answer: A
Explanation:
Encryption is the primary method to protect electronic data from unauthorized access.
Related Question 1
A wireless technology built into electronic gadgets used for exchanging data over short distances is ____.
  • A. Bluetooth
  • B. Wi-Fi
  • C. Modem
  • D. USB
Correct Answer: A
Explanation:
Bluetooth is designed for short-range wireless communication.
Related Question 2
An electronic copy of data such as a file stored on a computer’s display is called ____.
  • A. Soft copy
  • B. Gold copy
  • C. Hard copy
  • D. Premium copy
Correct Answer: A
Explanation:
A soft copy is the digital version displayed on screen.
Related Question 3
An optical disk is an electronic data storage medium that can be written and read from using a ____.
  • A. Low-power laser beam
  • B. High-power laser beam
  • C. Strong power laser beam
  • D. All of these
Correct Answer: A
Explanation:
Optical disks use a low-power laser beam for reading/writing.
Related Question 4
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 5
Computers process data into information by working exclusively with ____.
  • A. Multimedia
  • B. Word
  • C. Numbers
  • D. Characters
Correct Answer: C
Explanation:
At the hardware level, computers work with binary numbers.