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