Secondary Storage (Video Quiz)

What does a pit on an optical disc represent?

• Zero

• Light

• Data

• One

Which color laser does a Blu-Ray disc use?

• Blue

• Green

• Red

• Infrared

How does the wavelength of a Blu-Ray's laser compare to that of a DVD's laser?

• Variable

• The same

• Shorter

• Longer

What generation of optical disc is Blu-Ray considered?

• Second

• First

• Third

• Fourth

What is the next advancement in optical disc technology mentioned?

• Ultra HD Blu-Ray

• HD DVD

• LaserDisc

• VHS

What is used to change the direction of metal grain's magnetization in a hard drive?

• A laser beam

• An electrical current

• A mechanical arm

• A magnetic field

How many bits are there in one byte?

• 8

• 32

• 16

• 2

What represents a letter in computer data?

• One megabyte

• One kilobyte

• One byte

• One bit

Which technique allowed engineers to shrink the reader and writer in hard drives?

• Quantum computing

• Thin film lithography process

• Nano-fabrication

• Magnetic resonance

How much data can the solid-state drive mentioned store?

• 500 gigabytes

• 100 gigabytes

• 128 gigabytes

• 1 terabyte