e9 S1 Y8 - Lesson 5 Homework Quiz

What do electronic circuits use to represent and process binary digits?

• Sound
• Light
• Electricity
• Magnetism

What do hard disks use to represent and process binary digits?

• Sound
• Light
• Electricity
• Magnetism

What do optical disks (such as CDs, DVDs, and Blu-ray Discs) use to represent binary digits?

• Sound
• Light
• Electricity
• Magnetism

Which of the following are used to transmit information between digital devices? (Select the three correct answers)

• Light
• Electricity
• Electromagnetic waves
• Sound
• Magnetism

How many bytes is 720KB (kilobytes)?

• 720 bytes
• 90 thousand bytes
• 720 thousand bytes
• 5,760 thousand bytes
• 720 million bytes

How many bits is 720KB (kilobytes)?

• 720 bits
• 90 thousand bits
• 720 thousand bits
• 5,760 thousand bits
• 720 million bits

Which unit would you find most appropriate to describe this size of 24,763,158 bytes?

• Kilobytes
• Megabytes
• Gigabytes
• Terabytes