Question Detail

COM 101 Components of a Computer System Objective Question
Take CBT

Question

How is data represented on optical laser discs like CDs and DVDs?
Options
A As magnetic spots on a flexible plastic disk.
B As pits and lands on the disc surface.
Correct Answer
C As electronic charges in flash memory chips.
D As a series of switches set by a human operator.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Data on optical laser discs such as CD-ROMs and DVDs is represented as pits and lands. These are read by a laser. Magnetic spots are for magnetic media, and electronic charges are for flash memory.

Hint

Think about the physical topography created on the disc's surface by the laser during writing.

Question Info

Course: COM 101
Topic: Components of a Computer System
Type: Objective
Difficulty: Not specified
Question 794 of 1018
Previous Course Details Next