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Syllabus

NEC Computer · Practice

Chapters & sets

1. Basic Electrical and Electronics

Basic Electrical

Set 1106

Basic Electronics

Set 171 Set 233

2. Digital Logic and Microprocessor

Digital Logic

Set 150 Set 250 Set 350 Set 450 Set 550 Set 650 Set 749 Set 851 Set 950 Set 1050 Set 1150 Set 1232

Microprocessor

Set 150 Set 250 Set 350 Set 445 Set 550 Set 650 Set 720 Set 850 Set 969

3. Programming Language and Its Applications

Mixed chapter MCQs

Set 150 Set 249 Set 349 Set 451 Set 540

4. Computer Organization and Embedded System

Mixed chapter MCQs

Set 150 Set 249 Set 350 Set 450 Set 550 Set 650 Set 750 Set 849 Set 950 Set 1050 Set 1150

5. Concept of Computer Network and Network Security System

Basic Networking

Set 150 Set 253

Advanced Networking

Set 150 Set 250 Set 350 Set 450 Set 550 Set 655

6. Theory of Computation and Computer Graphics

Theory of Computation

Set 150 Set 250 Set 360

Computer Graphics

Set 150 Set 251 Set 350 Set 450 Set 550

7. Data Structures and Algorithm, Database System and Operating System

8. Software Engineering and Object-Oriented Analysis & Design

Mixed chapter MCQs

Set 150 Set 250 Set 350 Set 450 Set 550 Set 650 Set 750 Set 926

9. Artificial Intelligence and Neural Networks

Mixed chapter MCQs

Set 150 Set 317 Set 450 Set 550 Set 650 Set 750 Set 850 Set 932

10. Project Planning, Design and Implementation

Engineering Drawing

Set 150 Set 267

Engineering Economics

Set 168

Project Planning & Scheduling

Set 188

Project Mangement

Set 150

Engineering Professional Practice

Set 120

Engineering Regulatory Body

Set 130

Digital Logic Set 1

50 questions

Question 1

Hexadecimal can express in one digit what is done by following binary number of binary digits:

A.
$\text{One}$
B.
$\text{Four}$
C.

50

\text{Two}

D.

\text{Eight}

Question 2

NAND gates are preferred over others because these have:

A.
$\text{Have lower fabrication area}$
B.
$\text{Can be used to make any gate}$
C.
$\text{Consume less electronic power}$
D.
$\text{Provide maximum density in a chip}$

Question 3

According to De Morgan’s theorem,

\overline{A + B} =

A.
$\overline{A} \cdot \overline{B}$
B.
$\overline{A} + \overline{B}$
C.
$A \cdot B$
D.
$A + B$

Question 4

According to De Morgan’s theorem,

\overline{A \cdot B} =

A.
$\overline{A} + \overline{B}$
B.
$\overline{A} \cdot \overline{B}$
C.
$A + B$
D.
$A \cdot B$

Question 5

The logic unit shown below is of the type:

A.
$\text{AND}$
B.
$\text{NAND}$
C.
$\text{OR}$
D.
$\text{NOT}$

Question 6

The truth table shown below is for a: | Input A | Input B | Output (A AND B) | | ------- | ------- | ---------------- | | 0 | 0 | 0 | | 0 | 1 | 0 | | 1 | 0 | 0 | | 1 | 1 | 1 |

A.
$\text{NAND gate}$
B.
$\text{OR gate}$
C.
$\text{AND gate}$
D.
$\text{NOT gate}$

Question 7

Odd parity of a word can be conveniently tested by:

A.
$\text{OR gate}$
B.
$\text{NOR gate}$
C.
$\text{AND gate}$
D.
$\text{XOR gate}$

Question 8

A record at the end of a file which contains control total is:

A.
$\text{Pointers}$
B.
$\text{Trunk}$
C.
$\text{Trailer}$
D.
$\text{Trunkey}$

Question 9

Binary means:

A.
$\text{Three}$
B.
$\text{Ten}$
C.
$\text{Two}$
D.
$\text{Eight}$

Question 10

The digits used in a binary number system are:

A.
$9 \text{ and } 0$
B.
$1 \text{ and } 2$
C.
$0 \text{ and } 1$
D.
$3 \text{ and } 4$

Question 11

Names, numbers, and other information needed to solve a problem are called:

A.
$\text{Program}$
B.
$\text{Data}$
C.
$\text{Instruction}$
D.
$\text{Controls}$

Question 12

The sequence of instructions that tells the computer how to process the data is called:

A.
$\text{Data}$
B.
$\text{Controls}$
C.
$\text{Program}$
D.
$\text{Instruction}$

Question 13

Computer ICs work reliably because they are based on:

A.
$\text{Top-button design}$
B.
$\text{Two-stage design}$
C.
$\text{System design}$
D.
$\text{Two-status design}$

Question 14

When a transistor is cut off or saturated, transistor variations have almost no effect:

A.
$\text{Wave}$
B.
$\text{Stage}$
C.
$\text{Variations}$
D.
$\text{Circuits}$

Question 15

A group of devices that store digital data is called:

A.
$\text{Circuits}$
B.
$\text{Variations}$
C.
$\text{Register}$
D.
$\text{Bit}$

Question 16

The abbreviation for binary digit is:

A.
$0 \text{ and } 1$
B.
$\text{Base}$
C.
$\text{Binary}$
D.
$\text{Bit}$

Question 17

A byte is a string of:

A.
$\text{Two bits}$
B.
$\text{Eight bits}$
C.
$\text{Four bits}$
D.
$\text{Ten bits}$

Question 18

The control and arithmetic-logic sections are called the:

A.
$\text{Block diagram}$
B.
$\text{Input/output unit}$
C.
$\text{Control unit}$
D.
$\text{Central Processing Unit (CPU)}$

Question 19

A microcomputer is a computer that uses a:

A.
$\text{Chips}$
B.
$\text{Microprocessor}$
C.
$\text{Registers}$
D.
$\text{Vacuum tube}$

Question 20

The hexadecimal number system is widely used in analyzing and programming:

A.
$\text{Registers}$
B.
$\text{Microprocessors}$
C.
$\text{Chips}$
D.
$\text{Vacuum tubes}$

Question 21

The hexadecimal digits are 0 to 9 and A to:

A.
$\text{E}$
B.
$\text{G}$
C.
$\text{F}$
D.
$\text{D}$

Question 22

The main advantage of hexadecimal numbers is the ease of conversion from hexadecimal to:

A.
$\text{Decimal}$
B.
$\text{ASCII}$
C.
$\text{Binary}$
D.
$\text{BCD}$

Question 23

A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers is usually called:

A.
$\text{Address}$
B.
$\text{Chip}$
C.
$\text{Registers}$
D.
$\text{Memory location}$

Question 24

Binary-Coded Decimal (BCD) numbers express each digit as a:

A.
$\text{Byte}$
B.
$\text{Bit}$
C.
$\text{Nibble}$
D.
$\text{All of the above}$

Question 25

BCD numbers are useful whenever decimal information is transferred into or out of a digital system:

A.
$\text{Decimal}$
B.
$\text{ASCII}$
C.
$\text{Binary}$
D.
$\text{Hexadecimal}$

Question 26

The ASCII code is a 7-bit code for:

A.
$\text{Letters}$
B.
$\text{Other symbols}$
C.
$\text{Numbers}$
D.
$\text{All of the above}$

Question 27

The binary number 1100 0101 has:

A.
$1 \text{ byte}$
B.
$4 \text{ bytes}$
C.
$2 \text{ bytes}$
D.
$8 \text{ bytes}$

Question 28

How many bytes are there in 1011 1001 0110 1110?

A.
$1$
B.
$4$
C.
$2$
D.
$8$

Question 29

What is the base of F4C3₁₆ numbers?

A.
$2$
B.
$8$
C.
$4$
D.
$16$

Question 30

What is the decimal equivalent of 2⁹?

A.
$4096$
B.
$1000$
C.
$1024$
D.
$16$

Question 31

What does 4k represent?

A.
$4000$
B.
$40$
C.
$4096$
D.
$400$

Question 32

Express 8192 in K units:

A.
$8 \times 10^3 \text{K}$
B.
$8\text{K}$
C.
$8.192\text{K}$
D.
$\text{All of the above}$

Question 33

Solve the following equation for X:

X_{10} = 11001001_2

A.
$201$
B.
$214$
C.
$132$
D.
$64$

Question 34

A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How many bytes can the memory store? Express this in kilobytes.

A.
$4095, 4\text{K}$
B.
$32740, 32\text{K}$
C.
$16384, 16\text{K}$
D.
$46040, 46\text{K}$

Question 35

If a microcomputer has 64K memory, what are the hexadecimal notations for the first and last memory locations?

A.
$0000, \text{EEEE}$
B.
$0000, \text{FFFF}$
C.
$0, 64$
D.
$0000, 9999$

Question 36

How many nibbles are there in 1001 0000 0011?

A.
$\text{Two}$
B.
$\text{One}$
C.
$\text{Three}$
D.
$\text{Eight}$

Question 37

What is the ASCII code for 'T'?

A.
$1010100$
B.
$1011100$
C.
$1011010$
D.
$1011111$

Question 38

A gate is a logic circuit with one or more input signals but:

A.
$\text{Two output signals}$
B.
$\text{One output signal}$
C.
$\text{Double output signal}$
D.
$\text{More than one output signal}$

Question 39

An inverter is a gate with only:

A.
$\text{One input}$
B.
$\text{More than one input}$
C.
$\text{Two inputs}$
D.
$\text{All of the above}$

Question 40

An inverter is also called a:

A.
$\text{NOT gate}$
B.
$\text{OR gate}$
C.
$\text{AND gate}$
D.
$\text{NAND gate}$

Question 41

The OR gate has two or more input signals. If any input is high, the output is:

A.
$\text{Low}$
B.
$0$
C.
$\text{High}$
D.
$\text{All of the above}$

Question 42

The number of input words in a truth table always equals:

A.
$10^n$
B.
$4^n$
C.
$2^n$
D.
$8^n$

Question 43

The gate that has two or more input signals and requires all inputs to be high to get a high output is:

A.
$\text{OR gate}$
B.
$\text{AND gate}$
C.
$\text{NAND gate}$
D.
$\text{NOR gate}$

Question 44

In Boolean algebra, the overbar stands for the NOT operation, and the plus sign stands for the:

A.
$\text{AND operation}$
B.
$\text{NAND operation}$
C.
$\text{OR operation}$
D.
$\text{NOR operation}$

Question 45

In Boolean algebra, the dot sign stands for the:

A.
$\text{AND operation}$
B.
$\text{NAND operation}$
C.
$\text{OR operation}$
D.
$\text{NOR operation}$

Question 46

The inverter, OR gate, and AND gate are called decision-making elements because they can recognize some input words while disregarding others. A gate recognizes a word when its output is:

A.
$\text{Words, high}$
B.
$\text{Bytes, high}$
C.
$\text{Bytes, low}$
D.
$\text{Character, low}$

Question 47

How many input signals can a gate have?

A.
$\text{One}$
B.
$\text{Two only}$
C.
$\text{More than one}$
D.
$\text{Both (A) and (B)}$

Question 48

How many output signals can a gate have?

A.
$\text{One}$
B.
$\text{Two only}$
C.
$\text{More than one}$
D.
$\text{Both (A) and (B)}$

Question 49

The binary equivalent of the octal number 13.54 is:

A.
$1011.1011$
B.
$1001.1110$
C.
$1101.1110$
D.
$\text{All of the above}$

Question 50

The octal equivalent of 111010 is:

A.
$81$
B.
$72$
C.
$12$
D.
$\text{All of the above}$

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