ASDT - 2.3 Architecture - Section D

Which of the following is an example of a magnetic storage device?

• CD-ROM

• Solid State Drive (SSD)

• Hard Disc Drive (HDD)

• Blu-Ray Disc

In magnetic storage, tiny magnetic regions known as domains can be magnetized in one of two polarities to represent what?

• Pits and Lands

• 1 or 0 (Binary Data)

• Tracks and Sectors

• Positive and Negative Charges

On a magnetic disc, bits of data are arranged in concentric, circular paths known as tracks. These tracks are broken up into smaller areas called what, which form a block of data?

• Domains

• Platter

• Tunnels

• Sectors

On an optical disc (like a CD or DVD), what physical features are used to represent binary data (0s and 1s)?

• Tracks and Sectors

• Magnetic Domains

• Pits (0) and Lands (1)

• Floating Gates

How does an optical drive read the binary data (pits and lands) on a disc?

• By measuring the difference in reflectivity of a laser light.

• By detecting magnetic polarity changes.

• By using a negative charge to tunnel through the surface.

• By applying heat to an alloy layer.

A DVD has a much higher storage capacity than a standard CD primarily because it uses a laser with a shorter wavelength (650 nm vs 780 nm). What does the shorter wavelength allow the DVD laser to do?

• Convert the disc surface back to its original alloy state.

• Read the second, semi-transparent layer.

• Move all read/write heads at the same time.

• Burn smaller pits onto the surface of the disc.

Which type of laser light is used in Blu-Ray technology, allowing it to store more data than a DVD?

• Infrared (780 nm)

• Red (650 nm)

• Blue (405 nm)

• Green (532 nm)

What is a key characteristic of flash storage (like in an SSD or smartphone) compared to a Hard Disc Drive (HDD)?

• Uses pits and lands.

• Uses solid state technology with no moving parts.

• Requires a complex mathematical formula before data can be stored.

• Data is stored on multiple rotating platters.

What is the specific component in a flash storage transistor that is responsible for storing the electrical charge that represents the binary data (1 or 0)?

• The Control Gate

• The Drain

• The Floating Gate

• The Read/Write Head

According to the information provided, which of these storage technologies is the fastest of all secondary memory technologies and is increasingly used as the main storage device in personal computers?

• CD-R

• Magnetic Hard Disc Drive (HDD)

• DVD-ROM

• Solid State Drive (SSD)