Memory

Question 1

Describe the features of RAM

Answer 1

• Volatile
• Read and write
• Large storage
• Removable
• Cheap

Question 2

Describe the features of ROM

Answer 2

• Non-volatile
• Read only
• Small amount of storage
• Contains firmware and bootstrap
• Soldered to motherboard
• Expensive

Question 3

Describe the features of flash storage

Answer 3

• Non-volatile
• Read and write
• Smaller capacity than hard drive
• Solid state
• Used for BIOS
• Used as permanent storage in portable devices

Question 4

Describe the features of optical storage

Answer 4

• CD, DVD (can be read only or read and write), Blu-Ray (read and write)
• Low capacity compared to other types of storage
• Slow to access data
• Thin, lightweight so portable in some circumstances
• Very cheap (especially to mass produce)

Question 5

Describe the features of magnetic storage

Answer 5

• Hard disk drive, tape
• High storage capacity
• Quick to access data
• Has moving parts will eventually fail

Question 6

Describe the features of solid state storage

Answer 6

• SSD, USB sticks, SD cards,
• Medium storage capacity compared to other types
• Very quick to access data
• No moving parts so highly reliable
• Silent
• Low power
• Limited number of read/write cycles
• Expensive compared to other types of storage