The Central Processing Unit

10 Questions

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The Central Processing Unit

Study your notes on The CPU before trying out the following test


Questions and Answers
  • 1. 
    The CPU speed is largely dependent on
    • A. 

      Wordlength, Cache Memory and Clock Speed

    • B. 

      Wordlength only

    • C. 

      Cache Memory and Wordlength only

    • D. 

      Wordlength and Clock Speed only

  • 2. 
    A CPU's wordlength is
    • A. 

      The number of bits on that CPU's databus

    • B. 

      The number of bits the CPU can send and receive at a go

    • C. 

      The number of bits the CPU can process at a go

    • D. 

      All of the above

  • 3. 
    A CPU register
    • A. 

      Is also known as Cache Memory

    • B. 

      Is also known as accumulator

    • C. 

      Is a temporary storage location

    • D. 

      Can hold a maximum of 32 bits

  • 4. 
    Given a 32-bit CPU, how many words are there in 'processor'?
    • A. 

      1

    • B. 

      3

    • C. 

      9

    • D. 

      2

  • 5. 
    Which of the following are registers?
    • A. 

      Accumulator

    • B. 

      Program Counter, Instruction Register

    • C. 

      Shift Register

    • D. 

      All of the above

  • 6. 
    • A. 

      Determines the number of memory locations that can be directly acessed by the CPU

    • B. 

      Carries data between the CPU and main memory

    • C. 

      Is a two-way bus

    • D. 

      All of the above are true

  • 7. 
    • A. 

      It is a general purpose register

    • B. 

      It is the amount of RAM installed

    • C. 

      It is the number of memory locations that can be accessed by the CPU and is determined by the number of lines on the address bus

    • D. 

      It is the number of bits on the address bus

  • 8. 
    What is the function of the Control Unit?
    • A. 

      It is a temporary storage location inside the CPU

    • B. 

      It is a section of CPU responsible for all transfer of data between CPU and other components and for fetching, decoding and executing instructions

    • C. 

      It is a special purpose register

    • D. 

      All of the above

  • 9. 
    What is the role of the Program Counter during the Fetch-Execute cycle?
    • A. 

      It holds the next instruction to be executed

    • B. 

      It holds the address of the next instruction to be executed

    • C. 

      It fetches the next instruction

    • D. 

      It decodes instructions

  • 10. 
    The databus
    • A. 

      Is a bus connecting CPU and main memory that can carry data between them

    • B. 

      Is a two-way bus

    • C. 

      Both of the above are true

    • D. 

      None of the above are true