Computer Organization and Architecture cs 220 William Stalling 9th ed

When is data written into the ROM

During manufacturing

Express 1/16 in IEEE 32-bit floating point format.

0 01111000 00000000000000000000000 1 01111011 00000000000000000000000 0 01111011 00000000000000000000000>>>correct 1 01111010 00000000000000000000000

The only data register in the processor is

accumulator

Which of the following is an example of a multi-point device

Monitor Keyboard External modem Correct>>>None of the above

The Intel MMX technology was introduced with which core?

Pentium 2

I/O command type

Read Control Test All the above >>>>>

Data access time depends on

Seek time Transfer Time Rotational delay All of the above >>>>>

This type of I/O channel can transfer high-speed data with only one device at a time

Selector channel

Which of the following is not as method of accessing data?

Sequential Asynchronous >>>correct answer Random None of the above

Important differences between SRAM and DRAM

Static/Dynamic without refresh for SRAM

Major concern in multiple pipelines architectures

register contention

storage space that has the fastest access time

registers

Memory addresses in set-associative cache are divided into the three fields

tag set and word

An important attribute of RAM memory is

volatile

Which of the following is a bus arbitration scheme?

both Centralized and Distributed Arbitration

This is used by a dynamic branch prediction scheme

branch history table

Important disadvantage that limits use of long pipelines

buffers Stage delay Branches Correct >>>All of the above

Which of the following techniques is the most common one used to represent negative integer numbers?

twos complement

The primary advantage of RAID level 6 is

High data availability

The word width of floating point numbers stored in the IEEE 754 format is ____________ bits.

32 bits

Processor communication does not involve

error reporting

Which of the following preserves the sign bit in Two's Complement Multiplication?

arithmetic shift

These are used for debugging purposes

trap flags

Double precision floating point numbers require a word size of 64 bits in the IEEE 754 format.

true

In sign-magnitude representation, the left most bit of a binary integer number denotes if the number is positive or negative.

true

Th is type of instruction does not need a write back stage

load

The performance of a processor can be measured using

Clock period Cycles per Instruction Throughput * All of the above<<<<correct answer

Data in CDROM are arranged in blocks using the following field(s)?

Data Auxiliary Header All the above >>>>

When consecutive memory locations are stored in different memory banks, this leads to

Speedup - parallel access

When is the execute cycle performed?

When instruction is fetched After registers are decoded When the opcode is in the Instruction register>>>>correct answer When the instruction is buffered in the buffer register.

f the result of adding two numbers is larger than the word size then a condition called ___________ has occurred.

overflow

Which of the following approaches is used to handle multiple interrupts?

Disable interrupts and priority assignments

How long does SRAM hold data

Eternally Until power is supplied Only during manufacturing Correct Answer>>>None of the above

In which type of timing does the clock act as a reference?

Synchronous timing

Chapter 4 -- When is a cache block written into the main memory

dirty bit is set

Performance of memory is decided by which of the following parameters

Transfer rate Latency Cycle time All of the above

What is the primary technology used in second generation computers?

Transistors

The local bus connects which two components of the system?

Processor and cache

Details on the current processor condition is stored in

Program status word

Change of phase in phased disks is performed by

laser

Split caches indicate separate

Data and Instruction cache

Which of the following is not a state of the instruction cycle?

Data write back

example of techniques that increase pipeline efficiency

Delayed load Delayed branch Loop unrolling Correct>>>All the above

Which of the following devices uses the character as the basic unit of exchange?

Keyboard/Monitor

If one bit of the syndrome is set to 1, it means

Rewrite the entire word Correction is required Bit inversion is required Correct Answer>>> None of the above

Chapter 1 Notes

computer architecture-refers to those attributes of a system visible to programmer or those attributes that have a direct impact on the logical execution of a program. Computer Organization- refers to the operational units and their interconnections that realize the architectural specifications. Examples include the instruction set, the # of bits used to represent various data types, I/O mechanisms, and techniques for addressing memory.

registers that are accessed by different procedures need to be stored in

global register

The five important parts of the Von Neumann Machine are:

Central Arithmetic, Central Control, Memory, Registers and I/O

What did Moore's law predict about the density and size of future generation chips?

Density increases drastically and size reduces

The speedup of a processor is estimated using which of the following parameters

Execution time in one and N processors

Which of the following is a type of interrupt?

I/O interrupt Program Interrupt Hardware/power failure All of the above >>>

The stage in a pipeline that involves both the reading and writing of operands

execution

Guard bits are used in floating point arithmetic to pad the right end of the significand with 1's.

false

In a normalized floating point number only 23 bits are used for the significant because the most significant bit, the leftmost bit, is always a zero.

false

Which of the following is not included in each line of the cache

flag

Which property makes the CDROM be used for archival storage

removable

The error induced into floating point numbers when the extra bits must be discarded during arithmetic operations is called.

rounding

The number of instruction types available in the CISC architecture make the program

smaller

in RAID architecture, data is distributed as an array by a scheme called

striping

parallelism is increased by using this pipeline technique

superscalar

Chap 10 The ALU performs arithmetic and logical operations on data.

true

In order to add a negative number to another number it must be in two's complement form.

true

How are data and instructions stored in the Von Neumann architecture?

Unified read-write memory

The instruction set of a CISC architecture is

highly complex

Instructions can be speculatively executed using what two important steps?

Instruction fetching & decode Speculative fetch and Branch prediction Branch prediction and data analysis>>>correct answer *None of the above

Which of the following formats is used by floating point numbers?

Sign bit, biased exponent, and significand