SESSION
JUL/AUG
2021
PROGRAM
BACHELOR
OF COMPUTER APPLICATIONS (BCA)
SEMESTER
I
COURSE
CODE & NAME
DCA1101
– FUNDAMENTALS OF IT & PROGRAMMING
Q.1 (a) Define the term
‘Computer’?
(b) Explain the organization of
computer?
A
computer is a device that receives information (in the form of digitalized
data) and manipulates it for some result based on a program or sequence of
instructions on how the data is to be
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Q.2 Discuss the
different classifications of computer?
Computers
are classified according to their data processing speed, amount of data that
they can hold and price. Generally, a computer with high processing speed and
large internal storage is called a big computer.
Q. 3 Explain Random
Access Memory and Read Only Memory along with their types?
Random Access Memory
(RAM)
Main
memory of a computer system is used to store programs and data. RAM provides
temporary read/write storage while hard disks offer semipermanent storage. All
programs must be run through
Q. 4 (a) Define Software
Testing.
(b) Explain software testing strategy
in detail.
Software
Testing is the process of executing a program or system with the intent of
finding errors. Testing presents a stimulating variance for the software
engineer. During earlier software engineering
Q.5 (a) What is
Operating System?
(b) Discuss the different components of
Operating System.
An
operating system (OS) is a platform that controls the implementation of an
application program and acts as an interface between the user and computer
hardware. The purpose of an OS is to provide
Q. 6 (a) Explain
Reference OSI Model.
(b) How is the data transmission done
in OSI model?
The
layered model that dominated data communications and networking literature
before 1990 was the Open Systems
Interconnection (OSI) model. Everyone believed that the OSI model would
INTERNAL ASSIGNMENT SESSION JUL/AUG 2021
PROGRAM BCA
SEMESTER I
COURSE CODE & NAME DCA1104- UNDERSTANDING PC AND
TROUBLESHOOTING
1. a) Define the CPU Overclocking?
Ans. CPU
Overclocking
Though the CPU and microprocessor
are used synonymously, in reality CPU is a part of microprocessor.
Microprocessor differs from CPU in a few characteristics like instruction set,
bandwidth, and clock speed. Clock speed is the measure of number of instruction
sets that the microprocessor executes in one second. Speed margining is another
name for overclocking. By overclocking you Its
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2. a) What is motherboard?
Ans. The
motherboard is considered to be the ‘heart’ of any PC. It provides you the
system resources, supports the core components and handles the systems memory.
The whole performance of the PC is judged by the motherboard. This unit will
provide you the overall information about motherboards and help you in
troubleshooting the problems which arise in the motherboard. The motherboard is
referred to as an active backplane because the board consists of chips which
run for
3. Explain the BIOS Features?
Ans.
BIOS or BASIC Input Output System is an electronic program that instructs the
computer to start operation. It is a collection of instructions located in
the ROM chip that are designed to manage
themselves even when there is disk
failure. BIOS occupy 128KB of upper memory space. UMA is
Set
2
1. a) Explain how the parallel port
works?
Ans.
A parallel port consists of three registers:
The
data register
The
control register
The
status register
Address
bits A0 to A9 are decoded to determine the active register among the three.
–I/OR and –I/OW lines are used to determine whether the signals on the data bus
are being read from or written to the specific register. Handshaking signals
are bidirectional protocol used between sender
2. a) Describe the fundamentals of
sound boards?
Fundamentals
of Sound Boards
A
sound card is also known as an audio card. It is a computer expansion card that
facilitates the input and output of audio signals to and from a computer under
control of computer programs. Sound cards are very much useful in providing the
audio component for multimedia applications such as music composition, editing
video or audio, presentation, education, and entertainment (games). Many
computers have sound capabilities built in, while others require additional
expansion cards to provide for audio capability.
b) Describe the recording,
playback, sampling concepts, and role of MIDI?
Recording
Microphone
to the sound card to record sound in the computer. Some of the sound cards may
not have options to connect a microphone. While purchasing a sound card, you
should check whether it is hav
3. a) What are plug-and-play
devices, exactly?
Ans.
Plug and Play (PnP) is a combination of hardware and software support that
enables a computer system to recognize and adapt to hardware
configuration changes with little or no involvement by a user. This
feature enables you to add devices to a computer or even remove devices
b) Explain PnP in Windows, Enabling
PnP in Linux, and PnP troubleshooting techniques
·
Ans.PnP
in Windows
Windows
95 operating system, the technology has evolved dramatically due to OnNow
design initiative. OnNow outlines a comprehensive, system-wide approach to
controlling system and device configuration and
SESSION
JUL/AUG
2021
PROGRAM
BACHELOR
OF COMPUTER APPLICATIONS (BCA)
SEMESTER
I
COURSE
CODE & NAME
DCA1103
– BASIC MATHEMATICS
1a)
It is known that in a sports club, there are 1000 registered members. 60% of
members play Tennis, 50% of members play Cricket, 70% of members play Football,
20% of members play Tennis and Cricket, 40% of members play Cricket and
Football and 30% of members play Football and Tennis. If someone claimed that
20% of members play all three sports, what is your opinion and why? Use
inclusion and exclusion principle to provide your opinion)
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Ans
Members playing tennis,
P(T)= 60%
Members playing
cricket, P(C)= 50%
Members playing
football, P(F)= 70%
Members playing tennis
and cricket, P(T^C)= 20%
2
b) If for a right-angle triangle for the acne angle 0, sin θ = 12/13, find the
value cos θ and tan θ and show that
sin^2
+ cos^2 = 1
tan^2
+ 1 = sec^2
Ans
Given: 
2
c) Find the value of the constant a, for which, the following function f(x) is
continuous
Ans
3a) Differentiate the following function with respect to the variable 
.
3.b)
Evaluate the following definite integral ∫x/√(3 - x) + √x dx
Ans
4
a) The differential equation (2x ^ 2 + b
* y ^ 2) * d * x + cxydy can made exact by multiplying with integrating factor
1/(x ^ 2) Then find the relation between band c.
Ans
Multiplying the differential
equation by 1/x2, we get 
It is exact
So, 
4
b) Find one-fourth roots of unity
X^4=1
X^2= +-1
X^2=1
5
A) Solve the following system of equations by using the concept of matrices and
determinants.
5x
+ 7y + 2 =0
4x + 6y + 3 =0
Ans
5x+7y+2=0⇒5x+7y=−2
4x+
5b)
Find whether the following series are convergent or divergent
This is convergent series because denominator is
always bigger than numerator so, it will be convergent series.
Sum of Sqrt(n/
6a)Bag
I contain 3 red and 4 black balls and Bag Il contain 4 red and 5 black balls.
One ball is transferred from Bag I to Bag II and then a ball is drawn from Bag
II. The ball so drawn is found to be red Find the probability that the
transferred ball is black.
Let
(b) The daily earning of a vendor for a period
of 40 days are given. Calculate Standard Deviation and coefficient of
variation,
|
Daily
earning |
Days(f) |
xi |
(xi-mean)/9 |
F1ui |
Fiui2 |
|
118-126 |
3 |
122 |
-3 |
-9 |
27 |
|
127-135 |
8 |
131 |
-2 |
-16 |
32 |
|
136-144 |
9 |
140 |
-1 |
-9 |
9 |
SESSION
JUL/AUG
2021
PROGRAM
BCA
SEMESTER
I
COURSE
CODE & NAME
DCA1102
- Programming in C
Q. 1 What is the basic
structure of C program? Write a program to calculate the area of a circle?
Basic structure of C
program
Basic structure of the C program is
divided into six different sections:
Documentation section: The
Documentation section consists of a set of comment lines.
Link section: The
link section provides instruction to the compiler to link the header files or
functions from the system Its Half solved
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whatsapp no 8791490301.
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Q. 2 What is the use of control statements in C? Explain various
control statements in C programming language?
Control
statements enable us to
specify the flow of program control; ie, the order in which the instructions in
a program must be executed. They make it possible to make decisions, to perform
tasks
Q. 3 What is the purpose
of storage class in C? Explain various types of storage class in C?
Q. 4 What is an array? Explain the declaration
and initialization of one and two-dimensional arrays with example.
An
array is defined as an ordered set of similar data items. All the data items of
an array are stored in consecutive memory locations in RAM. The elements of an
array are of same data type and each item can be
Q. 5 (a) What is a
pointer? How to declare and initialize it?
(b) Write a C program to
illustrate the use of indirection operator to access the value pointed by a
pointer?
Pointer
is a variable used to store the address of another variable or a memory
location. It always stores a integer since it shares an address. The pointer in C language is a
variable which stores the address of another variable. This variable can be of
type int, char, array, function, or any other pointer.
Q.6 (a)Define Structure
and write the general syntax for declaring and accessing members?
(b) Write a C program to
show employee details using structure?
Structure in c is a user-defined data type that
enables us to store the collection of different data types. Each element of a
structure is called a member. Structures ca; simulate the use of classes and
templates as it can
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