Exam1

Question 1

In a two complement system, a hexadecimal value with leading 7 would indicate that the value is?

Answer 1

Positive

Question 2

How many bits a required for the following decimal value: 256

Answer 2

9

Question 3

Which part of the processor is responsible for directing the flow of data in the CPU

Answer 3

Control Unit

Question 4

X86 Processors use which of the following formats for floating-point representation

Answer 4

IEEE 754

Question 5

Which of the following allowing transmits a signal that enables components to know where in memory instructions and data exits?

Answer 5

Address Bus

Question 6

A high level langaauge statements have whaat type of relationship with machine learning statements?

Answer 6

One to many

Question 7

Moving a value into the edx register will overwrite the ds register

Answer 7

False

Question 8

What is the numeric range for a signal byte?

Answer 8

-127 to 127

Question 9

At what stage in the instructions Execution Cycle’s does the CPU determines the operation denoted by the instruction/opcode?

Answer 9

Decode

Question 10

The motherboard has connections for RAM, expansions cards, and external I/O devices

Answer 10

true

Question 11

Normalization is achieved by adding and removing digits from the mantissa

Answer 11

False

Question 12

In a decimal system how many digits are there

Answer 12

10

Question 13

Execute stage executes the instruction after the instruction has been fetched and decoded

Answer 13

True

Question 14

In a single-precision how many bits are used for the exponent

Answer 14

8

Question 15

Translating between language layers has two forms

Answer 15

Interpreting and compiling

Question 16

The ALU is responsible for directing the flow of data and instructions

Answer 16

False

Question 17

Single-precision uses a total of how many bits?

Answer 17

32

Question 18

Which of the following express the condition when a computed result goes beyond whaat can be stored given the computers architecture

Answer 18

Overflow

Question 19

The lower 8 bits of the RCX register is called

Answer 19

CL

Question 20

On x86 processsors a value that has a most significant bit of 1 would represent

Answer 20

Negative

Question 21

Single precision format uses 80 bits to represent Floating point numbers

Answer 21

False

Question 22

A “word” is how many bits inn terms of x86 architecture

Answer 22

16

Question 23

Which of the following is used to represent undefined or imaginary values

Answer 23

nan

Question 24

At which stage in the instruction Exectution Cycles does the instruction update the program counter (or instruction pointer)

Answer 24

Fetch

Question 25

What order is the hexadecimal value of the floating point value stored in memory for single precision intel architecture

Answer 25

Little byte order

Question 26

X86 and x86_64 are examples of which instruction set architecture

Answer 26

CISC (complex instruction set computing)

Question 27

How many bits are required to represent one hexadecimal digit

Answer 27

4

Question 28

What is the bias for single precision form

Answer 28

127

Question 29

During the decode stage, the CPU determines what the instructions is to apply the on the data

Answer 29

True

Question 30

Assembly language statements have what type of relationship with machine language statements

Answer 30

One to one

Question 31

Big byte order is when the least significant hexadecimal is stored first in the next avaible address

Answer 31

False

Question 32

The ALU handles the operations on floating point values

Answer 32

False

Question 33

Single precision format uses how many bytes

Answer 33

4

Question 34

A group of wires that connects components allowing them to communicate is known as

Answer 34

Bus

Question 35

Which of the following allows a processor to perform multiple operations at the same time

Answer 35

Parallel

Question 36

The bias is added to the actual exponent to ensure that the exponent is always stored as a positive value (unsigned)

Answer 36

True

Question 37

there are 8 and 16 general purposes registers in the x86 and x86_64 architecture respectively

Answer 37

True

Question 38

On x86 processors a value that has a most significant bit of 0 would represent

Answer 38

Positive

Question 39

exponent storage adds a value call

Answer 39

Bias

Question 40

A “byte” is how many bits in terms of x86 architecture

Answer 40

8 bits

Question 41

Which of the following is the fundamental number system of computing due to its reliability

Answer 41

Binary

Question 42

A register is the smallest and fastest memory in the CPU

Answer 42

True

Question 43

Which of the following is Boolean operators would result in false if both inputs are true

Answer 43

XOR

Question 44

Which register represents the 32-bit stack pointer

Answer 44

ESP

Question 45

Fetch is the second stage in a 3-stage instruction execution cycle

Answer 45

False

Question 46

How many bits are required for the following decimal value: 25

Answer 46

5

Question 47

The ability to store values beyond the normal range of the date type by moving the point until the number is in the valid range are called

Answer 47

Subnormal

Question 48

The abbreviation of the processor is more commonly known as

Answer 48

CPU (central processor unit)

Question 49

The FPU handles operations on floating point values

Answer 49

True

Question 50

In single precision how many bits are used for the mantissa

Answer 50

23

Question 51

A “dword” os how many bits in terms of x86 architecture

Answer 51

32

Question 52

In floating point representation the digits to the left and right of the “point” are known as

Answer 52

Mantissa

Question 53

What is the numeric range for an unsigned byte

Answer 53

0 to 255

Question 54

“IEEE754 defines arithmetic formats for finite numbers, infinites, and special values such as”” Not-a-Number””(NaN)”

Answer 54

True

Question 55

Which of the following allows the hexadecimal value 1984 to appear in memory as 8419

Answer 55

Little byte order

Question 56

Double precision format uses 64 bits to represent floating point numbers

Answer 56

True

Question 57

The process of shifting the binary point until there is a single 1 to the left of the point is called

Answer 57

Normalize

Question 58

Little byte order is when the most significant bit is stored first in the next avaible address

Answer 58

False