SESSION
JUL/AUG 2021
PROGRAMME
MASTER OF COMPUTER APPLICATION
(MCA)
SEMESTER
I
COURSE CODE & NAME
DCA6105 - COMPUTER ARCHITECTURE
Set- I
1.
What do you understand by parallelism in computer architecture? Discuss the
different classes of parallelism and parallel architecture.
Ans.
Before taking a toll on Parallel
Computing, first, let’s take a look at the background of computations of
computer software and why it failed for the modern era.
Computer software was written conventionally for serial
computing. This meant that to solve a problem, an algorithm divides the problem
. Its Half solved only
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2.
Describe the instruction cycle and its
various phases.
Ans: Instruction Cycle: A program residing in the memory
unit of a computer consists of a sequence of instructions. These instructions
are executed by the processor by going through a cycle for each instruction.
In a basic computer,
3.
What do you understand by pipelining? Recommend any real scenario where the
pipeline concept can be applied
Ans.
Pipelining: Pipelining is a process of
arrangement of hardware elements of the CPU such that its overall performance
is increased. Simultaneous execution of more than one instruction takes place
in a pipelined
Set- II
4.
What do you understand by Memory-Hierarchy? Discuss the types of
Memory-Hierarchy
Ans. The memory in a computer can be divided into five hierarchies based on the speed as well as use. The processor can move from one level to another based on its requirements. The five hierarchies in the memory are registers, cache, main memory, magnetic discs, and magnetic tapes. The first three hierarchies are volatile memories which mean when there is no power, and then automatically they lose their stored data. Whereas the last two hierarchies are not volatile which means
5.
What do you understand by Parallel Processing? Also explain Serial Processor
and True Parallel Processor.
Ans. Parallel processing is a method in computing of running two or more processors (CPUs) to handle separate parts of an overall task. Breaking up different parts of a task among multiple processors will help reduce the amount of time to run a program. Any system that has more than
6.
Summarize the usage of Cache only Memory Access (COMA) and Non-Uniform Memory
Access (NUMA) in the following circumstances
a.
Global Address Space usage
Ans. NUMA (Non Uniform Memory Access): They are intended for avoiding the memory access disadvantage of Uniform Memory
SESSION
JUL/AUG
2021
PROGRAMME
MASTER
OF COMPUTER APPLICATION (MCA)
SEMESTER
I
COURSE
CODE & NAME
DCA6104
- ADBMS
Set-1st
1. What is data model? Compare hierarchical. network
and relational data model giving example?
Ans. Data models define how the logical structure of a database is modeled. Data Models are fundamental entities to introduce abstraction in a DBMS. Data models define how data is connected to each other and how they are processed and stored inside the system.
The very first data model could be flat data. Its
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2. Explain database anomalies and its types? Comment the significance of normalization in database design.
Ans. Database anomaly is normally the flaw in databases which occurs because of poor planning and storing everything in a flat database. Generally this is removed by the process of normalization which is performed by splitting/joining of tables.
Normalization is necessary if you do not do it then the overall integrity of the data stored in the database will eventually
3.
What do you understand by SQL sub-queries? What are the various execution
strategies for SQL sub-queries
Ans. A Subquery or Inner query or a Nested query is a query within another SQL query and embedded within the WHERE clause.
A subquery is used to return
Set- 2nd
|
4. Explain the concept of
Serializability and Recoverability. Illustrate how to manage rollbacks by
locking Ans. A transaction may not execute completely due to hardware failure,
system crash or software issues. In that case, we have to roll back the
failed transaction. But some other transaction may also have used values
produced by the failed transaction. So we have to roll back those
transactions as well. Recoverable Schedules: Schedules in
|
SESSION
JUL/AUG 2021
PROGRAM
MCA
SEMESTER
I
COURSE CODE
& NAME
DCA6102,
Programming in C
Set- 1st
1. What is the basic structure of C program? Write a
program to calculate the area of a circle.
Ans..Whenever we create
a program in C language, we can divide that program into six different sections.
This section is as follows:
- Documentation (Documentation Section)
- Preprocessor Statements (Link Section)
- Definition Section
- Global Declarations Section
Main
func. Its Half solved only
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2.
What is the use of control statements in C? Explain various control statements
in C programming language.
Ans. The use of control statements in C: A control statement allows structured control of the sequence of application statements, such as loops, and conditional tests. It also allows switching the input stream to another file, opening and closing files, and various other operations. Control statements enable us to specify the flow of program control; ie, the order in which the instructions in
3. What is the purpose of storage
class in C? Explain various types of storage in class in C.
Ans. Storage Classes are used to describe the features of a
variable/function. These features basically include the scope, visibility and
life-time which help us to trace the existence of a particular variable during
the runtime of a program.
C language uses 4 storage
Set- 2nd
4. What is an array? Explain the declaration and
initialization of one dimensional and two dimensional array with an example.
Ans. An array is a collection of similar data elements
stored at contiguous memory locations. It is the simplest data structure where
each data element can be accessed directly by only using its index number.
For instance, if we want to store the marks scored by a student in 5 subjects, then there’s no need to define individual varia
5(a). Define pointer. How to declare and initialize it
Ans. A pointer is a variable
that stores a memory address. Pointers are used to store the addresses
of other variables or memory items. Pointers are very useful for another type
of parameter passing, usually referred to as Pass By Address.
Declaration
of C
5(b).
Write a C program to illustrate the use of indirection operator to access the
value pointed by a pointer.
Ans. Indirection operator through pointer: Pointers
have two uses. The first is to store a memory address. The second is to use the
stored memory address to access that points using an indirection.
An indirection in C
6(a). Define Structure
and write the general syntax for declaring and accessing members.
Ans. To define a structure, you must use the struct statement. The struct statement defines a new data type, with more than one member. The format of the struct statement is as follows –
struct [
6(b).
Write a C program to show employee details using structure.
Ans. To store multiple employee details we will use an array of structures.
Each element in the array will represent a single employee.
Each
SESSION JUL/AUG 2021
PROGRAM MASTER OF COMPUTER APPLICATIONS
(MCA)
SEMESTER I
COURSE CODE & NAME DCA6103 -
FOUNDATION OF MATHEMATICS
Ques 1 a)
Suppose that p and q are prime numbers and that n = pq. Use the principle of
inclusion-exclusion to find the number of positive integers not exceeding n
that are relatively prime to n
Answer:
Since n is the product of two prime numbers p and q,
any number which is relatively prime to n must be relatively prime to both p
and q. Consider the following two sets of . Its Half solved only
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Ques1 b) Show that ~[p
V(~p ^q)] and ~p ^~q are logically equivalent.
Answer:
Ques 2 a) Find lim x~0 (27x-9x-3x+1)/(1-cos x)
Answer:
Ques2
b)Find the derivative of f(x)=log e x ,x>0, using first principle.
Sol:
F(x)=
Ques 3 a)If
y = e ^ (a * sin-1(x)) , prove that (1-x2)yn+2
-(2n+1)xyn+1-(n² + a²)yn = 0.
Answer:
Hence find
the value of yn when x=0.
Sol:
Differentiate
Ques 3
b)Find all the asymptotes of the curve y ^ 3 - 6x * y ^ 2 + 11x ^ 2 * y - 6x ^
3 + x + y = 0.
Sol:
Given :
Ques 4
a)Show that 
Sol:
Ques 4 b)
Ifu = (3xy-y3)-(y²-2x)³/2 show that 
Sol:
Ques 5 Verify
Green's theorem for 
, where c is the region bounded by the parabola y = x and the line y=x.
Sol:
Boundary
condition
x=0,1
Ques 6
a)Solve the system of equations x + y + z = 9; 2x + 5y + 7z = 52; 2x+y=z=0.
Sol:
x+y+z=9
Ques 6
b)Find the value of √-5+12i.
Sol:
Let z=x+iy
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