Mrs O's Computer Architecture Quiz

Which of the following is false about the control unit?

• It controls the execution of programs.
• It times the fetching of instructions.
• It decodes instructions.
• Its performance is unaffected by processor speed.

Which part of the processor processes and manipulates data?

• The registers
• The ALU
• The control unit
• Cache

Which of these is one type of register?

• Program counter
• HLL counter
• RAM
• ROM

Which of these buses is uni-directional?

• Data bus
• Address bus

An address bus contains 16 lines. How many possible address locations are there?

• 16
• 32
• 65, 536
• 512

Which of the following best answers the question:
Explain how cache improves system performance. 

• Cache uses a faster type of memory.
• Frequently used instructions are stored in cache.
• As cache is closer to the processor than RAM, fetches are completed in less time.
• Cache is located closer to the processor.

Which of the following is true?

• Cache capacity is higher than RAM's.
• Cache cannot be changed; RAM can.
• Cache capacity is less than RAM.
• Cache cannot store the more frequently used instructions.

Which of the following is NOT one of the control lines?

• Read
• Amend
• NMI
• Reset

Which control line is responsible for sending out a message when the computer crashes and this message cannot be ignored?

• Reset
• NMI
• Interrupt
• Clock

The time interval between pulses is called a _______ .

• clock cycle
• clock pulse
• processor interval
• control cycle