Optical and Magnetic Storage Plenary

What type of memory is solid-state?

• Magnetic

• Optical

• Cloud

• Flash

Answer explanation

Solid-state memory refers to Flash memory, which is a type of non-volatile memory that uses electronic circuits to store data. Unlike magnetic or optical memory, Flash memory has no moving parts, making it faster and more reliable. Cloud storage, on the other hand, refers to data storage on remote servers accessed via the internet. Therefore, the correct answer is Flash.

What is used to read and write data on optical storage devices?

• Heat

• Laser

• Electric current

• Magnetic field

Answer explanation

Optical storage devices use lasers to read and write data, not heat, electric current, or magnetic fields. The correct choice is laser.

What are the marks burned into the reflective surface of an optical disc called?

• Bumps

• Pits

• Grooves

• Lands

Answer explanation

The marks burned into the reflective surface of an optical disc are called pits. Pits are the correct choice as they store the data on the disc.

Which type of storage is cheap for small capacities and very small and portable?

• Solid state

• Optical

• Cloud

• Magnetic

Answer explanation

Optical storage is a cheap and portable option for small capacities. It is the correct choice for this question.

What is used to magnetize and demagnetize sections of the platters in magnetic storage?

• Laser

• Electric current

• Read/write head

• Heat

Answer explanation

The correct choice to magnetize and demagnetize sections of the platters in magnetic storage is the read/write head.

Which storage type has the fastest read speeds among the three?

• Magnetic

• Solid state

• Optical

• Cloud

Answer explanation

Solid state storage has the fastest read speeds among magnetic, solid state, optical, and cloud storage options.

What is the main disadvantage of optical storage in terms of durability?

• Require a lot of power to run

• Easily scratched

• Damaged if dropped

• Exposed to a magnetic field

Answer explanation

The main disadvantage of optical storage in terms of durability is that it is easily scratched, which can lead to data loss.

What characteristic makes solid-state storage vulnerable?

• Reliability

• Durability

• Portability

• Access speed

Answer explanation

Solid-state storage is vulnerable to durability issues, which can affect its reliability and longevity. While it offers fast access speed and portability, its durability remains a concern. This vulnerability makes durability a critical characteristic to consider when using solid-state storage.

What is the main advantage of magnetic storage in terms of reusability?

• Limited reusability

• Infinitely rewritable

• Require a lot of power to run

• Easily scratched

Answer explanation

The main advantage of magnetic storage in terms of reusability is that it is infinitely rewritable, allowing for multiple uses without degradation.

What is the main factor that might make someone choose optical over magnetic storage?

• Cost per GB

• Capacity

• Access speed

• Portability

Answer explanation

The main factor that might make someone choose optical over magnetic storage is portability. Optical storage devices, such as CDs and DVDs, are more portable compared to magnetic storage devices like hard drives.