Preview

09 - CISC and RISC processors

 1. What is CISC?
ciscandrisc_q1.jpg

  Corporate Information Static Computers

  Complete Integrated Store Computers

  Component Initial Start-up Computers

  Complex Instruction Set Computers

 2. Only simple instructions are built into a CISC processor.

  FALSE

  TRUE

 3. What was a key intention of CISC?

  To reduce the length of programs

  To free up registry space

  To make the processor work faster

  To use more RAM

 4. With a single instruction, a CISC processor can execute several operations.
ciscandrisc_q4.png

  FALSE

  TRUE

 5. A key feature of CISC is that '___ ' and ' ____ ' are incorporated in arithmetical instructions.

  plus and minus

  lock and load

  save and retain

  load and store

 6. What is RISC?

  Retained Index Scope Computers

  Rapid Instruction Series Computers

  Random Integral Series Computers

  Reduced Instruction Set Computers

 7. RISC aims to cut down the number of clock cycles per instruction.
ciscandrisc_q7.jpg

  FALSE

  TRUE

 8. An advantage of RISC is that instructions can be …

  Inlined

  Slimlined

  Pipelined

  Streamlined

 9. RISC processors often use general purpose rather than assigned registers. What is a benefit of this approach?

  Less RAM is required

  Registers can be switched easily

  Shorter programs are required

  More secondary storage is available

 10. RISC processors have become dominant in mobile devices such as smartphones.
ciscandrisc_q10.jpg

  TRUE

  FALSE

 11. The following is a characteristic of CISC architecture: Instruction-decoding logic will be Complex.

  FALSE

  TRUE

 12. One instruction is required to support multiple addressing modes in ….

  RISC architecture

  CISC architecture

  all CPUS

  None of the above

 13. Generally speaking, less chip space is enough for general purpose registers for the instructions that are operated directly on memory in

  RISC architecture

  all CPUS

  None of the above

  CISC architecture

 14. __________is used in portable devices due to its power efficiency

  CISC architecture

  None of the above

  RISC architecture

  all CPUS

 15. Pipelining is one of the _______________. It is performed by overlapping the execution of several instructions in a pipeline fashion

  unique features of CISC

  unique features of a CPU

  unique features of RISC

  unique features of Registers

 16. The main difference between RISC and CISC is the …

  CPU size and sty;e

  number of instructions and its complexity

  size of the cache and complexity of peripheral design

  unique power of the instructions

 17. Generally speaking, is the following excerpt true or false?
CISC designs involve very complex architectures, including a large number of instructions and 
addressing modes, whereas RISC designs involve simplified 
instruction set and adapt it to the real requirements of user programs

  TRUE

  FALSE

 18. ______________- allows freedom of using the space on microprocessors because of its simplicity

  CISC architecture

  all CPUS

  RISC architecture

  None of the above

 19. The ease of microcoding new instructions allowed designers to make _____________ upwardly compatible

  All intel and apple machines

  RISC machines

  All DELL machines

  CISC machines

 20. The following is most likely to be a disadvantage of ….
The performance of the machine slows down due to the amount of clock time taken by different instructions will be dissimilar

  All intel and apple machines

  All DELL machines

  CISC machines

  RISC machines