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Questions:

Multiple Choice Question

15 x 1 = 15

The unchanged variables of the loop body is called loop _______.

(a)

condition

(b)

loop statement

(c)

loop variable

(d)

loop invariant

Which of the following is not an invariant of the assignment? m, n := m+2, n+3

(a)

m mod 2

(b)

n mod 3

(c)

3 x m - 2 x n

(d)

2 x m - 3 x n

Which is an elementary building block of the digital circuit?

(a)

Gate

(b)

Digital gate

(c)

Logic gate

(d)

Physical gate

A number system can be derived from a..............

(a)

bit

(b)

byte

(c)

base or radix

(d)

nibble or word

In which control flow, the statements are repeated until the condition becomes false?

(a)

sequential

(b)

alternative control flow

(c)

iterative

(d)

all of these

In which operating system, given task done within a fixed timeline?

(a)

Real time

(b)

Multi-tasking

(c)

Multiprocessor

(d)

Online

NOR is a combination of ?

(a)

NOT(OR)

(b)

NOT(AND)

(c)

NOT(NOT)

(d)

NOT(NOR)

If C is true, S1 is executed in both the flowcharts, but S2 is executed in

(a)

(1) only

(b)

(2) only

(c)

both (1) and (2)

(d)

neither (1) nor (2)

Which of the following properties is true after the assignment (at line 3)?
1 --i, j = 0, 0
2 i, j := i+1, j-1
3 -- ?

(a)

i + j > 0

(b)

i+j < 0

(c)

i+j=0

(d)

i = j

10.

Which of the following activities is not algorithmic in nature?

(a)

Multiply two numbers

(b)

Draw a kolam

(c)

Walk in the park

(d)

Swapping of two numbers

11.

What is the smallest size of data represented in a CD?

(a)

blocks

(b)

sectors

(c)

pits

(d)

tracks

12.

Which is the default application for spreadsheets in Ubuntu? This is available in the software launcher?

(a)

Libre Office Writer

(b)

Libre Office Calc

(c)

Libre Office Impress

(d)

Libre Office Spreadsheet

13.

Interactive Operating System provides

(a)

Graphics User Interface (GUI)

(b)

Data Distribution

(c)

Security Management

(d)

Real Time Processing

14.

How many characters can be handled in Binary Coded Decimal System?

(a)

(b)

255

(c)

256

(d)

128

15.

Which one of the following is used to in ATM machines

(a)

Touch Screen

(b)

Speaker

(c)

Monitor

(d)

Printer

Generic 2

9 x 2 = 18

16.

The following constants are of which type?
(i) 39
(ii) 032
(iii) 0XCAFE
(iv) 04.14

17.

When will the loop variant be true?

18.

Write any four RISC processors.

19.

Write the options appears which shutting down Ubuntu.

20.

What Is Boolean Algebra?

21.

If √2 = 1.414, and the square_root() function returns 1.414, does it violate the following specification?
-- square -root (x)
-- inputs: x is a real number, x ≥ 0
-- outputs: y is a real number such that y²=x

22.

Mention the different server distributions in Linux OS.

23.

What is HDMI?

24.

Differentiate Input and output unit.

Generic 3

9 x 3 = 27

25.

Write the output of the following C++ program code :
#include
using namespace std;
class Calci
{
char Grade;
int Bonus;
public:
Calci() {Grade='E'; Bonus=0;} //ascii value of A=65
void Down(int G)
{
Grade-=G;
}
void Up(int G)
{
Grade+=G;
Bonus++;
}
void Show()
{
cout<< Grade << "#" << Bonus << endl; }
};
int main()
{
Calci c;
c.Down(3);
c.Show();
c.Up(7);
c.Show();
c.Down(2);
c.Show( );
return 0;
}

26.

The following code sums up the total of all students name starting with ‘S’ and display it.Fill in the blanks with required statements.
struct student {int exam no,lang,eng,phy,che,mat,csc,total;char name[15];};
int main()
{
student s[20];
for(int i = 0; i < 20; i ++)
{
…………………….. //accept student details
}
for(int i = 0; i < 20; i ++)
{
…………………….. //check for name starts with letter “S”
……………………. // display the detail of the checked name
}
return 0;
}

27.

Write the following in real constants.
(i) 15.223
(ii) 211.05
(iii) 0.00025.

28.

What are the differences between “Logical error” and “Syntax error”?

29.

Perform the following expressions. (COFFEE)₁₆ = (?)₂

30.

What is Nano-technology?

31.

Write the De Morgan's law.

32.

What is the difference between assignment operator and equality operator?

33.

Differentiate PROM and EPROM

Generic 5

10 x 5 = 50

34.

Define a class RESORT with the following description in C++ :
Private members:
Rno // Data member to store room number
Name //Data member to store user name
Charges //Data member to store per day charge
Days //Data member to store the number of days
Compute ( ) /* A function to calculate total amount as Days * Charges and if the total amount exceeds 11000 then total amount is 1.02 * Days *Charges */
Public member:
GetInfo( ) /* Function to Read the information like name, room no, charges and days */
DispInfo ( ) /* Function to display all entered details and total amount calculated using COMPUTE function */

35.

Write a C++ program to add two distances using the following structure definition
struct Distance{
int feet;
float inch;
}d1 , d2, sum;

36.

Write programs to find the sum of the following series:
(a) \(x-\frac { { x }^{ 2 } }{ 2! } +\frac { { x }^{ 3 } }{ 3! } -\frac { { x }^{ 4 } }{ 4! } +\frac { { x }^{ 5 } }{ 5! } -\frac { { x }^{ 6 } }{ 6! } \)
(b) \(x+\frac { { x }^{ 2 } }{ 2 } +\frac { { x }^{ 3 } }{ 3 } +...+\frac { { x }^{ n } }{ n } \)

37.

Explain Algorithm Design Techniques.

38.

Suppose a number system has been designed with radix 10 with symbols (ordered from small to large) A, B, C, D, G, H, I, L, M, N. Convert the following number to equivalent hexadecimal number; (INDIAN)₁₀

39.

Circulate the contents: Write the specification and construct an algorithm to circulate the contents of the variables A, B and C as shown below: The arrows indicate that B gets the value of A, C gets the value of B and A gets the value of C.

40.

Answer the following:
(a) Which Class of software the OS belongs?
(b) What is the need of OS?
(c) Why OS is important?
(d) Name any three types of Operating systems.
(e) Name any three functions of OS.

41.

Write the procedure to create, rename, delete and save a file in Ubuntu OS. Compare it with Windows OS.

42.

Explain the fundamental gates with expression and truth table.

43.

Suppose you want to solve the quadratic equation ax² + bx + c = 0 by an algorithm.
quadratic_solve (a, b, c)
-- inputs : ?
-- outputs: ?
You intend to use the formula and you are prepared to handle only real number roots. Write a suitable specification.
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

Visit QB365-SLMS - https://www.qb365.in/slms/

Answers Key:

Multiple Choice Question

15 x 1 = 15

(d)
loop invariant

(d)
2 x m - 3 x n

(a)
bit

(a)
Real time

(a)
NOT(OR)

(a)
(1) only

10.

(d)
Swapping of two numbers

11.

12.

(b)
Libre Office Calc

13.

(a)
Graphics User Interface (GUI)

14.

(a)
64

15.

(a)
Touch Screen

Generic 2

9 x 2 = 18

16.

(i) 39 - Decimal
(ii) 032 - Octal
(iii) 0XCAFE - Hexadecimal
(iv) 04.14 - Decimal

17.

The loop invariant is true before the loop body and after the loop body, each time.

18.

(i) Intel P6
(ii) Pentium IV
(iii) AMD K6
(iv) AMD K7

19.

(i) Log out
(ii) Suspend
(iii) Restart or shutdown

20.

Boolean algebra is a mathematical discipline that is used for designing digital circuits in a digital computer. It describes the relation between inputs and outputs of a digital circuit.

21.

No, because (-1.414)² =2, which satisfies input-output relation (y² = x)

22.

The server distribution in Linux OS:
(i) Ubuntu Linux
(ii) Linux Mint
(iii) Arch Linux
(iv) Deepin
(v) Fedora
(vi) Debian
(vii) Centos

23.

HDMI (High Definition Multimedia Interface) is an audio/video interface which transfer the uncompressed video and audio data from a video controller, to a compatible computer monitor, LCD projector, digital television, etc.

24.

Input Unit	Output Unit
An input device feeds information to a computer system for processing.	output device reproduces or displays the results of that processing.
Input devices only allow for input of data to a computer.	output devices only receive the output of data from another device.
It is a peripheral device used to provide data and control signals to an information processing system such as computer.	It is a unit which sends data from the computer to another device.
Eg. keyboard, mouse	Eg. printer, monitor

Generic 3

9 x 3 = 27

25.

B # 0
I # 1
G # 1

26.

}
struct student
int exam_no, lang, eng, phy, chem, mat, csc, total;
char name [15];
}
int main()
{
students [20];
for (int i = 0; i <20; i++)
{
cout<<"\n Enter the exam number of student:"";
cin>> s[i].exam_no.;
cout << "\n Enter language names:";
ein>>s[i].lang;
cout<<"Enter name of the Student:"";
cin>>s[i].Name;
}
for (int i=0; i<20; i++)
{
if (s[i],name[0] == 's')
{
cout << "Exam number:" << s[i].name;
cout << "Student Exam number";
}
}
return 0;}

27.

(i) 15.223 = 0.15223E2
(ii) 211.05 = 0.21105E3
(iii) 0.00025 = 0.25E-3

28.

Syntax error	Logical error
The syntax is a set of grammatical rules to construct a program. Every programming language has unique rules for constructing the source code. Syntax errors occur when grammatical rules of c++ are violated.	A Program has not produced the expected result even though the program is grammatically correct. It may happen by the wrong use of variable/operator/order of execution etc. This means, the program is grammatically correct, but it contains some logical errors. So, Semantic error is also called as "Logic Error".

29.

(COFFEE)₁₆
\(\overset { C }{ \underset { 1100 }{ \downarrow } } \)\(\overset { O }{ \underset { 0000 }{ \downarrow } } \)\(\overset { F }{ \underset { 1111 }{ \downarrow } } \)\(\overset { F }{ \underset { 1111 }{ \downarrow } } \)\(\overset { E }{ \underset { 1110 }{ \downarrow } } \)\(\overset { E }{ \underset { 1110 }{ \downarrow } } \)
(COFFEE)₁₆ = (110000001111111111101110)₂

30.

Nano-technology is an engineering, science, and technology that develops machines or works with one atom or one molecule that is 100 nanometers or smaller.

31.

De Morgan's
\(\bar { A+B } =\bar { A } .\bar { B } \)
\(\left( \bar { A.B } \right) =\bar { A } +\bar { B } \)

32.

Assignment Operator	Equality Operator
Assignment operator is used to assign the values to the variable.	The equality operator is used to compare the values of both the variables and the result is true or false.

33.

PROM	EPROM
Can be Programmed only once.	It is reusable and can be programmed multiple times.
This has Permanent memory.	EPROMs memory can be erased using UV light.
Enclosed in plastic package so that not visible to UV light.	EPROMs are fused with quartz window.
Uses high Voltage.	Also use high Voltage but not enough to alter the semiconductor layer permanently.

Generic 5

10 x 5 = 50

34.

#include < iostream.h >
#include < conio.h >
#include < stdio.h >
class RESORT
{
Private
int Rno.;
char name [20];
float charges;
int days;
float compute();
Public:
void getinfo();
void dispinfo();
}
void RESORT:: getinfo()
{
cout <<"Enter Registration number:";
cin >> Rno.;
cout << "\n Enter name:";
gets(name);
cout << "\n Enter per day charges:";
cin >> charges;
cout << "\n Enter number of days:";
cin >> days;
}
void RESORT:: dispinfo()
{
cout<<"\n1. Registration number:" << Rno << "\n2. Name:";
puts(name);
cout << "\n3. charges per day:" << charges << "\n4. Number of days:" << cout << "\n5. Amount :" << compute ( );
}
long float;
float amount=charges * days;
if(amount> 11000)
amount= 1.02*days *charges;
return amount;
}
RESORT obj;
void main()
{
clrscr ( );
obj.getinfo ( );
obj.disprinfo ( );
getch; return 0;
}

35.

#include< iostream >
using namespace std;
struct Distance
{
int feet;
float inch;
}d1, d2, sum;
int main()
{
cout<<"Enter 1st distance:"<<endl;
cout<<"Enter feet:";
cin>>d1.feet;
cout<<"Enter inch:";
cin>>dl.inch;
cout<<"\n information for 2nd distance:"<<endl;
cout<<"Enter feet:"";
cin>>d2.feet;
cout<<"Enter inch:"
cin>>d2.inch;
sum.feet = d1.feet +d2.feet;
sum.inch-d1.inch + d2.inch;
if (sum.inch > 12)
{
++sum.feet;
sum.inch 12;
}
cout<<endl; "Sum of distance="<<sum.feet << "feet" << sum.inch<< "inches";
return 0;
}
Output:
Enter 1st distance
Enter feet: 6
Enter inch: 3.4
Enter 2nd distance
Enter feet: 5
Enter inch: 10.2
Sum of distances = 12 feet 1.6 inches

36.

(a) #include <iostream>
using namespace std;
#include <math.h>
#factorial function.
long int fact(int n)
{
long int f= 1;
for (int i = 1;i<n; i++)
f* = i;
return f
}
// main function
int main()
{
int x, y = 1;
float sum = 0;
cout<<"Enter the value for x:";
cin>>x;
for (int i=1;i<-6; i++)
{
sum = sum + y*((pow(x, 1))/fact(i));
y*=-1;
}
cout<<"Sum=" <<Sum<<endl;
cin.get():
return();
}
(b) #include <iostream>
using namespace std;
#include <math.h>
int main()
{
int M, L;
float sum = 0;
cout<<"Enter the value for M:";
cin>>M;
cout<<"Enter the number of terms";
cin>> L;
for (int i=1;i<=m; i++)
sum Sum + Pow(m,i)/i;
cout<<"Sum="<< Sum<<endl;
cin.get():
return 0;
}

37.

There are a few basic principles and techniques for designing algorithms.
1. Specification:
The first step in problem-solving is to state the problem precisely. A problem is specified in terms of the input given and the output desired. The specification must also state the . properties of the given input; and the relation between the input and the output.
2. Abstraction:
A problem can involve a lot of details. Several of these details are unnecessary for solving the problem. Only a few details are essential. Ignoring or hiding unnecessary details and modeling an entity only by its essential properties is known as abstraction. For example, when we represent the state of a process, we select only the variables essential to the problem and ignore inessential details.
3. Composition:
An algorithm is composed of assignment and control flow statements. A control flow statement tests a condition of the state and depending on the value of the condition, decides the next statement to be executed.
4. Decomposition:
We divide the main algorithm into functions. We construct each function independently of the main algorithm and other functions. Finally, we construct the main algorithm using. the functions. When we use the functions, it is enough to know the specification of the function. It is not necessary to know how the function is implemented.

38.

A, B, C, D, G, H, I, L, M, N are presents 0,1,2,3,4, 5, 6, 7, 8, 9 respectively of decimal number system (base 10) so, (INDIAN)_IO = (693609)₁₀
To find its hexadecimal equivalent

Thus (INDIAN)₁₀ = (693609)₁₀ = (A9569)₁₆

39.

Specifications:
1 circulate
2-inputs:
3-outputs:
Algorithm:
a, b, c: = A, B, C
a, b, c: = C, A, B
1 circulate (a, b, c)
2 --a, b, c: A, B, C
3 temp: = c
4 c: b
5 b:=a
6 a:= temp
7 -- a, b, c: C, A, B

40.

(a) System Software
(b) Provide a platform to run application programs and activate the basic level hardware.
(c) Act as an interface between the user, software, and hardware.
(d) 1. Real-Time OS
2. BOSS
3. Interactive OS
(e) 1. Process Management
2. Storage Management
3. Device Management.

41.

In Ubuntu OS:
(i) Create a file: By right clicking in the desktop and also files be created by using file menu.
(ii) Delete a file: By using right-click choosing a move to trash or by using the menu.
(iii) Rename a file: By using right-click and choosing rename option.
(iv) Save a file: Press ctrl + x or F2 to exit. You will. then be asked if you want to save. (or) Press ctrl+ 0 or F3 and ctrl + x or F2 for save and exit.
In Windows OS:
(i) Create file: Open an application and create by using file menu.
(ii) Delete a file: By right click on a file and choosing the delete option to delete a file.
(iii) Rename a file: By right click on a file and choosing rename option to rename a file.
(iv) Save file: Press ctrl+S or file - save to save the file.

42.

A gate is a basic electronic circuit which operates on one or more signals to produce an output signal.
The three fundamental gates are AND, OR and NOT gates.
AND Gate
The AND gate can have two or more input signals and produce an output signal. The output is "true" only when both inputs are "true", otherwise, the output is "false". In other words the output will be 1 if and only if both inputs are 1; otherwise the output is 0. The output of the AND gate is represented by a variable say C, where A and B are two and if input boolean variables. In boolean algebra, a variable can take either of the values '0' or '1'. The logical symbol of the AND gate is

The Truth Table For AND Gate is

Input		Output
A	B	C
0	0	0
0	1	0
1	0	0
1	1	1

OR Gate;
The OR gate gets its name from its behaviour like the logical inclusive "OR". The output is "true" if either or both of the inputs are "true". If both inputs are "false" then the output is "false". In other words the output will be 1 if and only if one or both inputs are 1; otherwise, the output is 0. The logical symbol of the OR gate is

The truth table For OR Gate is

Input		Output
A	B	C
0	0	0
0	1	1
1	0	0
1	1	1

NOT Gate;
The NOT gate, called a logical inverter, has only one input. It reverses the logical state. In other words the output C is always the complement of the input. The logical symbol of the NOT gate is

The truth table for NOT gate is

Input	Output
A	C
1	0
0	1

43.

x\(= {-b \pm \sqrt{b^2-4ac} \over 2a}\)
1. Quadratic solve (a, b, c)
2. -- inputs: b²-4ac > = 0 where a, b, c are real numbers, a ≠ 0
3. -- outputs: x₁ and x₂ are real numbers such that a(x₁)² + bx₁ + c = 0 and a(x_₂)² + bx_₂ + c = 0