Welcome to ECE Board Exam Practice Quiz for Computer Fundamentals. This set of practice quiz 2 will test your competence on the theories, concepts and problem solving involving computer fundamentals. The objectives and goals of this quiz is to help engineering students familiarize concepts and theories as well as develop problem solving skills when answering questions related to the computer fundamentals.
Computer Fundamentals Test Bank
In this section are compiled practice quiz for Computer Fundamentals that could be able to enhance your knowledge and skills in your preparation for the ECE Board Exam. The goal is to add thousands of questions for you to be familiarized and hopefully help you to be prepared. I am looking forward that this practice quiz will give you an additional confidence in taking your upcoming Engineering Board Exam.
Guidelines:
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- Once all questions are answered, you will be shown your rating.
- You have to get 70% of the total items to pass the quiz.
- You can re-take the quiz as many times as you want or until you are satisfied of your rating.
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Choose the letter of the best answer in each questions.
PREVIOUS: Computer Fundamentals Practice Quiz 01
Which of the following choices is NOT a characteristic of analog quantity?
Variable amplitude
One quantity is represented by another which is proportional to the first
Is considered discrete
They can vary over a continuous range of values
Correct!
Wrong!
An acceptable voltage range of a logic 1 for CMOS operating at VDD = 5 V.
2 to 5 V
0 to 0.8 V
0 to 1.5 V
3.5 to 5 V
Correct!
Wrong!
A circuit that operates in such a way that its output is high when all its inputs are high.
OR
NAND
NOR
AND
Correct!
Wrong!
In Boolean algebra, B · B’ =
B
B’
0
1
Correct!
Wrong!
The output of an inverter is connected to the input of a second inverter. Determine the output level of the second inverter.
Output level is the complement of the input level
Output level is the same as the input level
High output is observed
Undetermined state
Correct!
Wrong!
Change in state is
same state
reset
set
toggle
Correct!
Wrong!
Determine the sum-of-product expression for a circuit with four inputs and an output that is HIGH only when A is low at the same time that exactly two inputs are low.
A’B’C’D + A’B’CD’ + A’BC’D’
A’B’C’ + C’D’
A’B’C’ + A’C’D’ + A’B’D’
10
Correct!
Wrong!
An acceptable voltage range of a logic 1 for TTL.
2 to 5 V
0 to 0.8 V
0 to 1.5 V
3.5 to 5 V
Correct!
Wrong!
With OR operation, 1 + 1 = _______
1
0
10
2
Correct!
Wrong!
CMOS means
Complementary Main-Oxide Semiconductor
Complementary Metal-Oxide Semiconductor
Complements Main-Oxidation Semiconductor
Correlation in Metal Oxidized Semiconductor
Correct!
Wrong!
What is the output of an EX – OR gate when a logic signal and its exact inverse are connected to its input?
X’
X
1
0
Correct!
Wrong!
Convert (B2F)16 to octal.
5547
5457
7547
11010
Correct!
Wrong!
Convert (614)8 to decimal.
400
384
392
396
Correct!
Wrong!
What is the most common type of digital IC package?
DIP
Metal type
CMOS
TTL
Correct!
Wrong!
In Boolean algebra, X + 1 =
X + 1
X
0
1
Correct!
Wrong!
The __________ belongs to a class of codes called the minimum-change codes, in which only one bit in the code group changes when going from one step to the next.
Morse code
BCD code
Excess-3 code
Gray code
Correct!
Wrong!
What is the largest number that can be represented using 8 bits?
11111111
10111011
10111111
11011111
Correct!
Wrong!
Equivalent of decimal value of 178 in straight binary code is ________ and in BCD is ________.
11000, 11111111
10111101, 100000
10110010, 101111000
111111, 1100000
Correct!
Wrong!
What is the hex equivalent of an ASCII code which means “HELP”?
48 45 4C 50
4C 50 51 52
58 57 58 48
48 45 50 50
Correct!
Wrong!
The Boolean expression for a six-input OR gate
A + B + C
A · B · C · D · E · F
A + B + C + D + E + F
U + V + W + X + Y + Z
Correct!
Wrong!
The number of input combinations will equal _________ for an N-input truth table.
2^(N-1)
N
2^N
N-1
Correct!
Wrong!
Which of the following items below is NOT one of the three basic operations of Boolean algebra?
Logical addition
Logical complementation
Logical subtraction
Logical multiplication
Correct!
Wrong!
Simplify the expression y = AB’D + AB’D’.
AB
D’
BCD
AB’
Correct!
Wrong!
An unconnected input is termed as _________.
open
close
disconnected
floating
Correct!
Wrong!
What is the next binary number following (10111)2 in the counting sequence?
11100
11001
10110
11000
Correct!
Wrong!
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Computer Fundamentals – Quiz 02
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