| SESSION | SEPTEMBER 2022 |
| PROGRAM | BCA |
| SEMESTER | I |
| course CODE & NAME | DCA-1104- Understanding PC and Troubleshooting |
Set-I
- Explain the 8 Bit and 16 Bit Industry Standard Architecture (ISA)?
Ans: 8-Bit ISA
8-bit ISA was used by PC/XT Bus. The PC/XT is commonly referred to as the XT, was IBM’s successor to the original IBM PC. XT stands for extended technology. The XT was designed to serve the enhanced machine for commercial purpose.
8-Bit ISA was the original ISA found on IBM machines which was 8 bits wide indicating the
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- What are the steps to identify whether to repair or replace the motherboard?
Ans: Therefore, it is always better to install a new motherboard because it is readily available in the market and easy to buy. The only problem is the cost. Buying a new motherboard is several times costlier than replacing the defected part.
Since the motherboard replacement is an expensive idea. Therefore we need to verify whether
- Define the CPU Overclocking? Explain the overclocking requirements, potential pitfalls, overclocking the system and overclocking the Intel processors?
Ans: 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.
Set-II
- Explain the Construction of Hard drive?
Ans: Hard disk (hard drive) construction
Hard disks are rigid platters, composed of a substrate and a magnetic medium. The substrate – the platter’s base material – must be non-magnetic and capable of being machined to a smooth finish. It is made either of aluminum alloy or a mixture of glass and ceramic. To allow data storage, both sides of each platter are coated with a magnetic medium – formerly
- Explain the components of Graphics, Video Cards?
Ans: It will find that a standard video or graphics card is composed of several components mounted on a printed circuit board (abbreviated as PCB, which is a thin plate on which chips and other electronic components are placed) which
- Explain SCSI consideration.
Ans: While adding or upgrading the SCSI support on your computer you must consider the four important elements. They are the SCSI peripheral, the SCSI host adapter, the SCSI cable assembly, and the SCSI software driver. If any of these elements is missing, then the installation will suffer from
| SESSION | SEPTEMBER 2022 |
| PROGRAM | BACHELOR of Computer applications (BcA) |
| SEMESTER | I |
| course CODE & NAME | Dca1103 – basic mathematics |
ASSIGNMENT Set-I
1(a). 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 the three sports, what is your opinion and why? [Use inclusion and exclusion principle to provide your opinion]
Sol: The total number of members who play both Tennis, Cricket and Football are 900.
Step-by-step explanation:
Given:-
Total number of registered members n(U) = 1000
Members who play Tennis = n(T) = 60% = 600
Members who play Cricket = n(C) = 50% = 500
are 900.
(b). By using truth tables, check whether the propositions and are logically equivalent or not?
2(a). Modulo 18 as a group. Construct the multiplication table for G and find the inverse of each element of G.
(b). If for a right-angle triangle, for the acute angle, then, find the values for&and show that –
Sol: Given: sin θ = 12/13
To find: cos θ and tan θ
(c). Find the value of the constant, for which, the following function is continuous
3(a). Differentiate the following function with respect to the variable.
Sol:
3(b). Evaluate the following definite integral
Sol: ∫02πxsinxdx
=[−xcosx]02π+∫02πcosxdx
=[−xcosx+sinx]02π
ASSIGNMENT Set-I i
4(a). The differential equation can made exact by multiplying with integrating factor . Then find the relation between and
Sol:
4(b). Find one fourth roots of unity.
5(a). Solve the following system of equations by using the concept of matrices and determinants.
Sol: Given,
5x+7y+2=0⇒5x+7y=−2
4x+6y+3=0⇒4x+6y=−3
we have,
[
5(b). Find whether the following series are convergent or divergent
6(a). Bag I contain 3 red and 4 black balls and Bag II 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.
Sol: E1=Ball transferred from Bag I to Bag II is red
E2=Ball transferred from Bag I to Bag II is black
A=Ball drawn from Bag II is red in colour
P(E1)=73
P(E2)=74
P(A/E1)=105=21
P(A/E2)=104=52
| SESSION | SEPTEMBER 2022 |
| PROGRAM | BACHELOR of COMPUTER APPLICATIONS (BCA) |
| SEMESTER | I |
| course CODE & NAME | dca1102 – Programming in c |
Set – I
Questions
- Describe various features of the C programming language.
Ans: C is characterized by the ability to write very concise source programs, due in part to the large number of operators included within the language. It has a relatively small instruction set, though actual implementations include extensive library functions which enhance the basic
- Explain various branching statements in C with examples.
Ans: A branch is an instruction in a computer program that can cause a computer to begin executing a different instruction sequence and thus deviate from its default behaviour of executing instructions in order. Common branching statements include break, continue,
- Define a function. List and explain the categories of user-defined functions.
Ans: A function is a self-contained program segment that carries out some specific, well-defined task. Every C program contains one or more functions. One of these functions must be called main. Program execution will always begin by carrying out the instructions in main.
Set – II
- Define an array. How to initialise one-dimensional array? Explain with suitable examples.
Ans: 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 accessed
5(a). Define Structure and write the general syntax for declaring and accessing members.
Ans: A Structure definition creates a format that may be used to declare structure variables. For e.g., Consider a book database consisting of book name, author, number of pages and
(b). List out the differences between unions and structures.
Ans:
- What is a pre-processor directive? Explain define, and #include pre-processor directives.
Ans: Preprocessor directives are lines of the source file where the first non-whitespace character is #, which distinguishes them from other lines of text. The effect of each preprocessor directive is a change to the text and the result is a transformation of the text that
| SESSION | SEPTEMBER2022 |
| PROGRAM | BACHELOR of COMPUTER APPLICATIONS (BCA) |
| SEMESTER | I |
| course CODE & NAME | DCA1101 – FUNDAMENTALS OF IT & PROGRAMMING |
Set – I
- (a). Define the term ‘Computer’?
Ans: 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 processed. Complex computers also include the means for storing data (including the program, which is also a form of data) for some necessary duration. A program may be
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- Discuss the different classifications of computer?
Ans: Classification of Computers:-
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. Due to rapidly improving technology, we are always confused among the categories of computers. Depending upon their speed and memory size,
- Explain Random Access Memory and Read Only Memory along with their types?
Ans: Main memory of a computer system is used to store programs and data. RAM provides temporary read/write storage while hard disks offer semi permanent storage. All programs must be run through RAM before they can be used. The term random derives from the fact
Set – II
- (a). Define Software Testing?
Ans: 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 activities, the engineer attempts to build software from an abstract concept to a tangible product. Now comes testing. The engineer creates a series of
- (a). What is Operating System?
Ans: 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 an environment in which a user can execute programs in a
- (a). Explain OSI Reference model?
Ans: 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 become the ultimate standard for data communications, but this did not
(b). How is data transmission done in OSI model?
Ans: Data transmission in OSI model:- The sending process has some data it wants to send to the receiving process. It gives the data to the application layer, which then attaches the application header, AH (which may be null), to the front of it and give the resulting item to