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Homework answers / question archive / Chapter 3 TRUE/FALSE 1)Clock speed and CPU design are factors that determine how fast instructions are executed

Chapter 3 TRUE/FALSE 1)Clock speed and CPU design are factors that determine how fast instructions are executed

Computer Science

Chapter 3

TRUE/FALSE

1)Clock speed and CPU design are factors that determine how fast instructions are executed.

 

 

     2.   A RISC CPU performs more complex instructions and can work on general-purpose hardware.

 

 

     3.   CPUs that run faster generally require more energy and generate more heat.

 

 

     4.   The address bus almost always runs faster than the external clock speed of the CPU.

 

 

     5.   The Intel Itanium processor is a CISC-based processor that uses a 32-bit architecture.

 

 

MULTIPLE CHOICE

 

     1.   A CPU that has two or more sections that read and execute instructions is referred to as which of the following?

a.

multiprocessor CPU

c.

multicore processor

b.

single-CPU system

d.

multibus processor

 

 

 

     2.   If you want to design a CPU that will run on general-purpose hardware, which type of CPU should you design?

a.

CISC

c.

multicore

b.

single-threaded

d.

RISC

 

 

 

     3.   Which feature of RISC CPUs allows the processor to operate on one instruction at the same time it is fetching one or more subsequent instructions?

a.

caching

c.

coprocessing

b.

CPU scheduling

d.

pipelining

 

 

 

     4.   What RISC processor design can build multiple instructions into a single word and can combine instructions into groups, allowing parallel operation?

a.

pipelining

c.

instruction caching

b.

EPIC

d.

complex instruction set

 

 

 

     5.   Which of the following is true about RISC CPU hardware?

a.

it is less complicated and can run at faster clock speeds

c.

it cannot run in small devices like smartphones

b.

it is more complicated and must run at slower clock speeds

d.

all current CPUs are based on it

 

 

 

     6.   If you are designing a CPU on which you want to have a lot of storage that can be accessed at the internal clock speed of the CPU, which type of memory are you concerned with?

a.

L2 RAM

c.

L1 cache

b.

L2 cache

d.

L1 RAM

 

 

 

     7.   If your address bus is 20-bits wide, approximately how much memory can your computer address?

a.

64K bytes

c.

4G bits

b.

1024K bytes

d.

64K bits

 

 

 

     8.   Approximately how much data could a CPU with an external clock speed of 2 GHz and a 32-bit data bus transfer per second?

a.

4 Gigabits

c.

4 Gigabytes

b.

8 Gigabits

d.

8 Gigabytes

 

 

 

     9.   You are troubleshooting a computer that is in the design phase.  The problem you see is that the CPU is not receiving information about the status and of resources and devices connected to the computer.  The CPU is also not receiving IRQs. What component of the computer do you suspect could be the problem?

a.

CPU cache

c.

control bus

b.

data bus

d.

address bus

 

 

 

   10.   You have found an old dusty computer in your basement that you can identify as an original IBM PC.  You ask your friend if he knows what CPU was used in these computers.  Which of the following represents a correct response to your question?

a.

8088

c.

80286

b.

Pentium

d.

Itanium

 

 

 

   11.   You work for a college that was just donated a computer with an Itanium processor.  Which of the following OSs can NOT be installed on this computer?

a.

Windows XP 64-bit

c.

Windows Server 2003 Enterprise Edition 64-bit

b.

Vista 64-bit

d.

Windows Server 2008 64-bit

 

 

 

   12.   You are building a new PC for yourself.  You want your computer to have a dual-core processor made by AMD.  Which processor family should you choose?

a.

K6-2

c.

Athlon X2

b.

Duron

d.

Athlon XP

 

 

 

   13.   You have heard that the Linux distribution your are going to install to run a new application runs best on a RISC architecture.  Which of the following CPU families should you consider for the computer on which you will install this Linux distribution?

a.

Motorola 68040

c.

SPARC

b.

Intel Xeon

d.

Pentium

 

 

 

   14.   Which of the following is best described as a technology that enables a single processor to appear as two processors to the OS and allows multiple threads to run simultaneously?

a.

EPIC

c.

RISC

b.

hyper-threading

d.

super-threading

 

 

 

   15.   Which hardware component predicts what data will be needed and makes that data available to the CPU’s internal memory?

a.

cache controller

c.

address bus

b.

data bus

d.

RAM controller

 

 

 

COMPLETION

 

     1.   A computer with two or more CPUs is referred to as a ________________ computer.

 

 

 

     2.   The ___________________ is the list of command the CPU can execute.

 

 

 

     3.   _________________ allows the processor to operate on one instruction at the same time that is fetches subsequent instructions.

 

 

 

     4.   The ability of a single EPIC processor to perform the instructions in an  instruction group simultaneously is ______________ operation.

 

 

 

     5.   A CPU scheduling algorithm that allows two or more processes to be run at the same time by a single CPU is called __________________.

 

 

MATCHING

 

 

a.

CISC

f.

hyper-threading

b.

external clock speed

g.

control bus

c.

data bus

h.

instruction set

d.

address bus

i.

RISC

e.

core

j.

execution-based cache

 

 

     1.   an internal communications pathway for memory reads and writes

 

     2.   computer CPU architecture in which processor components are reconfigured to conduct different operations as required

 

     3.   internal communications pathway that keeps the CPU informed of the

status of particular computer resources and devices

 

     4.   the part of a processor used to read and execute instructions

 

     5.   the speed at which the processor communicates with the memory and other devices in the computer

 

     6.   the group of commands the processor recognizes

 

     7.   first-level cache in a XEON CPU that stores decoded instructions

and delivers them to the processor at high speed.

 

     8.   an internal communications pathway that allows computer components, such as the CPU, display adapter, and main memory, to share information

 

     9.   an Intel multithreading technology that enables a single processor

to appear to the operating system as two separate processors

 

   10.   a computer CPU design that dedicates processor hardware components to certain functions

 

       

       

 

SHORT ANSWER

 

     1.   Describe what is meant by a computer’s system architecture.

 

 

 

     2.   Describe the difference between a multiprocessor computer and a multicore computer.

 

 

 

     3.   Describe the difference between a RISC and CISC CPU.

 

 

 

     4.   Describe the difference between the internal and external clock speeds of a CPU.

 

 

 

     5.   What is the difference between L1 cache and L2 cache?

 

 

 

     6.   List the three types of bus that you will find in every computer design.

 

 

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