1.1 Systems Architecture/CPU OCR

What does CPU stand for?

• Central Processing Unit
• Computer Protocol User
• Cool Pokemon Unit
• Computer Processing Unit

Bob has a 1GHZ dual core CPU, Amy has a 2GHZ single core CPU. Which can process more instructions per second?

• Bob
• Amy
• Equal
• Neither can process anything

Which of the following adjustments to an internal component could improve the performance of a CPU?

• Add more cores
• Decrease the cache
• Get a bigger motherboard
• Remove the OS

What happens if you increase the clock speed?

• CPU can process instructions quicker
• CPU can process more instructions at the same time
• CPU will explode
• CPU processes too fast for the cache to handle

What happens if you increase the number of cores

• CPU can process instructions quicker
• CPU can process more instructions at the same time
• CPU will explode
• CPU processes too fast for the cache to handle

Which of these is an embedded system (firmware)

• Computer

• Smart Phone

• Pizza

• Microwave

Barry has a 1GHZ dual core CPU. He improves it to a 4GHZ quad core CPU. What is the effect on the performance of his computer?

• The number of instructions executed per second doubles
• The number of instructions executed per second triples
• The number of instructions executed per second quadruples
• The number of instructions executed per second improves by 8 times

Which of these are not steps in the FDE cycle?

• Instructions are fetched from main memory

• Instructions are decoded in the control unit

• The decoded instruction is executed

• The ALU decodes the instructions

• The program counter transfers the data to be decoded to the MDR

Which of the following has the largest memory?

• RAM

• Cache

Which of the following is the fastest memory?

• RAM

• Cache