Day 4 Class Review Quiz CPU, Memory, Speed

What does the CPU stand for in a computer system?

• Central Processing Unit

• Central Power Unit

• Computer Processing Unit

• Core Processing Unit

Answer explanation

The CPU stands for Central Processing Unit, which is responsible for executing instructions and performing calculations in a computer system.

What is the CPU often referred to as in a computer system?

• The heart

• The brain

• The memory

• The storage

Answer explanation

The CPU is often referred to as the brain in a computer system because it processes instructions, performs calculations, and manages data flow, similar to how the brain functions in the human body.

How is the speed of a CPU measured?

• Bytes per second

• Bits per second

• Hertz

• Megabytes

Answer explanation

The speed of a CPU is measured in Hertz, not in Bytes per second, Bits per second, or Megabytes. Hertz is the correct unit of measurement for CPU speed.

Which unit is used to measure the ticks of a CPU clock?

• Bytes

• Hertz

• Bits

• Seconds

Answer explanation

The unit used to measure the ticks of a CPU clock is Hertz, which represents the frequency of the clock cycles per second.

Modern computer processors are measured in which unit?

• Megahertz (MHz)

• Kilohertz (kHz)

• Gigahertz (GHz)

• Terahertz (THz)

Answer explanation

Modern computer processors are measured in Gigahertz (GHz), which is a unit used to indicate the clock speed of the processor.

Early personal computers measured clock speed in which unit?

• Megabytes (MB)

• Gigahertz (GHz)

• Kilohertz (kHz)

• Megahertz (MHz)

Answer explanation

Early personal computers measured clock speed in Megahertz (MHz) which was the unit used to indicate the speed of the processor.

What is the primary function of a CPU in a computer?

• Storing data

• Processing data

• Transmitting data

• Displaying data

Answer explanation

The primary function of a CPU in a computer is processing data, not storing, transmitting, or displaying data. It performs calculations and executes instructions to run programs.

The internal clock of a CPU ticks billions of times per second.

• True

• False

Answer explanation

The statement is true because the internal clock of a CPU indeed ticks billions of times per second.

We measure network speed in Hertz.

• True

• False

Answer explanation

We do not measure network speed in Hertz, but rather in bits per second (bps) or its multiples like megabits per second (Mbps) or gigabits per second (Gbps). Therefore, the statement is false.

Network speed is measured in bits per second (bps), not Hertz. Hertz measures frequency, while bits per second measure data transfer rates.

• True

• False

Answer explanation

Network speed is measured in bits per second (bps), not Hertz. Hertz measures frequency, while bits per second measure data transfer rates. Therefore, the statement is False.