DRAM Quiz

What is the purpose of copying data from an SSD to DRAM?

• To permanently store data

• To temporarily store data for processing

• To refresh the data held in capacitors

• To optimize the size of each microchip

Why does a computer use both SSDs and DRAM?

• SSDs provide faster data access than DRAM

• DRAM provides long-term storage for data

• SSDs and DRAM have different capacity requirements

• DRAM is more affordable than SSDs

What is the main trade-off in the memory hierarchy?

• Speed versus capacity

• Power consumption versus affordability

• DRAM versus cache memory

• Registers versus SSDs

How is data transferred between the CPU and DRAM?

• Through memory channels on the motherboard

• Through the interconnection matrix in the DRAM microchip

• Through the wordlines and bitlines in the memory array

• Through the sense amplifier and read/write driver

What is the purpose of the wordlines and bitlines in the memory array?

• To activate specific memory cells for reading or writing

• To connect the DRAM to the CPU via memory channels

• To refresh the data held in the capacitors

• To manage the flow of data from the SSD to DRAM

How many memory cells are there in a single DRAM die?

• 65,536

• 8,192

• 17 billion

• 31

What is the purpose of the capacitor in a memory cell?

• To store one bit of data

• To connect the memory cell to the bitline

• To activate the transistor for reading or writing

• To refresh the leaked electrons

How is data read from a memory cell?

• By measuring the amount of charge in the capacitor

• By connecting the capacitor to the bitline

• By activating the transistor with the wordline

• By refreshing the leaked electrons

What is the purpose of the sense amplifier in the memory array?

• To activate specific memory cells for reading or writing

• To connect the DRAM to the CPU via memory channels

• To refresh the data held in the capacitors

• To amplify the signal from the bitline for reading

How is data written to a memory cell?

• By measuring the amount of charge in the capacitor

• By connecting the capacitor to the bitline

• By activating the transistor with the wordline

• By refreshing the leaked electrons