1.1.1 c) The factors affecting CPU performance

What is clock speed measured in?

• Hertz

• Watts

• Bytes

• Cycles

What does a single gigahertz represent?

• One thousand operations per second

• One hundred operations per second

• One billion operations per second

• One million operations per second

What is the purpose of cache in a CPU?

• To increase the physical size of the CPU

• To enhance the graphics

• To store permanent data

• To store temporary instructions and data

How does having more CPU cores affect a computer's performance?

• Decreases efficiency due to increased communication

• Has no effect on performance

• Eliminates the need for main memory

• Reduces the need for a cache

What is a quad-core processor?

• A processor with eight cores

• A processor that operates at four gigahertz

• A processor with four cores

• A processor with two cores

Why can't you say that a 3 GHz processor executes three billion instructions per second exactly?

• Because it only applies to single-core processors

• Because it executes more than three billion instructions

• Because it executes less due to the need for synchronization between cores

• Because the actual execution rate depends on various factors

What can enhance a computer's main CPU performance besides the CPU itself?

• Offloading tasks to specialized processors like graphics and sound cards

• Installing a larger hard drive

• Adding more RAM

• Increasing the clock speed only

What is the significance of the cache size in a CPU?

• There is no significant impact of cache size on performance

• Larger cache sizes slow down the CPU if the cache size is increased too much

• Larger cache sizes can significantly increase CPU performance

• Cache size is only relevant for multi-core CPUs

How does virtual memory benefit a computer system?

• Increases the physical memory size

• Slows down the processor for better thermal management

• Allows the system to simulate more memory than is physically available using disk space

• Reduces the need for RAM