Saturday, January 16, 2021

January 16, 2021

IGNOU BCS-011 Exam Most Questions

IGNOU BCS-011 Exam Most Questions  Free For 2020-21 Session: If you were searching for the IGNOU BCS-011 Exam Most Questions  free for 2020-21 Session then finally you are at right place as IGNOU BCS-011 Exam Most Questions for free 2020-21 is now available IGNOU BCS-011 Exam Most Questions   PDF files from here.



IGNOU BCS-011 Exam Most Questions  Free For 2020-21 Session


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IGNOU BCS-011 Exam Most Questions

(1)What is a computer system ? ExplainVon-Neumann architecture of computersystems with the help of a diagram 

(2)What is software project management ?Explain the following with respect tosoftware project management :

(i) Scheduling

(ii) Timesheet Management 

(3)What is URL ? Explain the parts of a URLwith the help of an example 

(4) What is ASCII ? Explain how Unicode isdifferent from ASCII.

(5) What is a motherboard ? List and brieflyexplain any five parts of a motherboard.

(6) What is the need of memory hierarchy incomputer systems ? Compare magneticmemory with semiconductor memory interms of speed and cost.

(7) What are malwares ? Explain any threemalwares, in brief, with the help of anexample of each.

(8) What is a Compiler ? How is it differentfrom Interpreter ? List any two high levellanguages, that use a Compiler.

(9) What is a Web Browser ? Explain how aWeb Browser works. Also, explain the typesof Web Browsers.

(10) What is a programming language ? Brieflyexplain the following elements of aprogramming language :

(i) Variable

(ii) Data type
 (11)Explain the working of the variouscomponents of a computer, with the helpof a diagram.

(12) What are Arrays and what is their utility.Explain the two types of arrays and withthe help of an example depict the storage ofdata in them.

(13) What is a computer network ? What are itsadvantages ? Differentiate between guidedand unguided data transmission channels.

(14) What is Moodle ? Describe its role inE-learning.

(15) Explain memory hierarchy with the help ofsuitable diagram.

(16) Explain various categories of printers on thebasis of speed and quality.

(17) What is E-mail ? Write steps to createE-mail account.

(18) What is a port ? Explain any four types ofports.

(19) Differentiate between Batch andMultiprogramming operating system.

(20) Describe the OSI Reference Model with thehelp of a diagram.

(21) Explain the following terms with the helpof example/diagram.

(i) Access time 

(ii) DNS

(iii) Plotter

 (iv) Video card

(22) Disk checkers

(23) Draw a flowchart that accepts ten numbersand displays its sum and average.

(24) Do the following conversions :

(i) (382)10 to Binary

(ii) (79)10 to Hexadecimal

(iii) (110101.01)2 to decimal

(iv) (38A)16 to Binary

(b) Describe the working of Routers andGateways.

(c) What is a Browser ?

(25) What is an Open Source Development 8Model ? Describe any six features of thismodel.

(26) Explain any four Operating System Services.  

(27)Draw a flow chart to input a naturalnumber, such as 997, and determinewhether or not it is a multiple of 3

(28) In a local area network of star topology,one component failed, bringing down the 'whole network. Predict which componenthas failed. Justify your answer.

(29) Describe two similarities and twodifferences between a router and agateway.

(30) What is a Wild ? How does it promotecontent creation by the community ?

(31) Explain the Von Neumann's architecturewith the help of a diagram.

(32) Describe if statement. Write an ifstatement to multiply even numbers by 3and odd numbers by 4.

(33) What is a trackball ? How does it work andwhere is it used ?

(34) What is an operating system ? What are itsfunctions and uses ? Name any oneproprietary and one open source operatingsystem.

(35) Describe the layers of TCP/IP referencemodel.

(36) What is a defragmentation utility andwhat does it do ? What are the benefits ofdefragmentation ?

(37) What are the threats to security from theInternet ? What are the mechanismsavailable to safeguard oneself from them ?

(38) What is the use of a compiler in a computersystem ? How is it different from aninterpreter ?

(39) What are the components of the process fordeveloping e-learning content on anysubject ? Describe briefly the activitiescarried out in each, with the help of adiagram / example.

(40) Why is a memory hierarchy used in acomputer system ? Explain the memoryhierarchy diagrammatically, giving


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January 16, 2021

IGNOU BCA BCS-054 Study Materials /Notes /Important Questions Free For All Session

IGNOU BCA BCS-054 Study Materials  Free For All  Session: If you were searching for the IGNOU BCA BCS-054 -COMPUTER ORIENTED NUMERICAL TECHNIQUES Exam Most Questions  free All Session then finally you are at right place as IGNOU BCA BCS-054 Exam Most Questions for free  is now available IGNOU BCA BCS-054  Exam Most Questions   PDF files from here.


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IGNOU BCA BCS-054 Exam Most Questions/Notes for   Free 

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BCS-054 : COMPUTER ORIENTED NUMERICAL TECHNIQUES


(1)Attempt to solve the following system of linear equations using the Gauss elimination method :

3x1 + 2x2 + x3 = 3

2x1 +x2 +x3 = 0

6x1 + 2x2 + 4x3 = 6

Does the solution exist ? If yes, how many



(2)Give the formula for next approximation of values of x1, x2 and x3 using Gauss-Jacobi

iterative method for solving the following system of linear equations :

a11x1 a12x2 a13x3 = bl

a21x1 a22x2 a23x3 = b2
a31x1 + a32x2 + a33x3 = b3

(3) Solve the following NP using Euler's method :
y` = fft, y) =1 + y; given y(0) = 1            
Find the solution on [0, 0.8] with h = 0-2.

(4) Using Maclaurin's series expansion, find the value of (1 - x) -1, at x = 0, by taking
the first three terms and find truncation error.

(5) Discuss the relative merits and demerits of direct methods over iterative methods for
solving a given system of linear equations

(6) Using 8-decimal digit floating-point representation (with four digits for
mantissa, two for exponent and one each for sign of exponent and mantissa),
represent the following numbers in normalized floating point form (use
chopping, if required) :
(i) 89543
(ii) — 89.766
(iii) 0.0007345

(7)Write the following system of equations in matrix form
— 9x — 8y = — 4
3x + 4y = — 17

(8) Show one iteration of solving the following system of linear equations using any
iterative method. You may assume
x = y = 0 as the initial estimate :
— 6x + 8y = — 2
4x + 7y = — 11


(9) Find an interval in which the following
equation has a root : 2
x2 + 9x + 20 = 0




(10)State the following two formulae for interpolation :
(i) Newton's backward difference formula
(ii) Bessel's formula

(11)From the Newton's backward difference formula asked in part k(i)
above, derive the formula for finding the derivative of a function at x = xo.

(12)Explain each of the following concepts with a suitable example :
(i) Order of a differential equation
(ii) Initial Value Problem
(iii) Degree of a differential equation
(iv) Non-linear . differential equation

(13)For each of the three numbers of find relative error in its normalized
 floating point representation ?

(14) Using an 8-decimal digit floating point representation (4 digits for mantissa, 2 for
exponent and one each for sign of exponent and sign for mantissa), represent the
following numbers in normalized floating point form (using chopping, if required) :
(i) 87426
(ii) - 94.27
- 0.000346

(15) What is underflow ? Explain it with an example of multiplication in which
underflow occurs.

(16) Write the following system of linear equations in matrix form :
6x + 8y = 10
- 5x + 3y = 11

(17) State the following two formulae for (equal interval) interpolation :
(i) Newton's Backward Difference Formula
(ii) Newton's Forward Difference Formula

(18) Let min. and max. represent respectivelyminimum and maximum
 positive real numbers representable by some floating
point number system. Can every real number between max. and min. be
representable by such a number system ? Explain the reason for your answer

(19) For each of the following numbers, find the floating point representation, if
possible normalized, using chopping, if required.
(i) 3/11
(ii) 74.0365
Further, find the absolute error, if any, in
each case.

(20) Solve the following system of equations, using partial pivoting Gaussian
elimination method (compute upto two places of decimal only) :
4x1 - 5x2 + 6x3 = 24
3x1 - 7x2 + 2x3 = 17
5x1 + 2x2 - 4x3 = - 21

(21) For solving the following system of linear equations
a11 x1 + a12 X2 4- a13 = b1 ,
a21 + a22 X2 + a23 x3 = b2 and
a31 x1 + a32 x2 + a33 x3 = b3
with an * 0 * a22 and a33 * 0, by iterative
Gauss-Jacobi Method, with initial approximations as x 1 = 1 = x2 = x3,
find the values of next approximations of xl , x2 and x3.

(22) For the table given above, find Newton's forward differences interpolating
polynomial and find the value f(1.7) using the polynomial.

(23) If, f(x) represents the distance covered by a
particle in x units of time, estimate the velocity and acceleration of the particle at
x = 1-5.

(24) Solve the following 117P using Euler's method :
y' = fix, y) = x + y, given y(0) = 1.

(25) Using 8-decimal digit floating point representation (4 digits for mantissa, 2 for
exponent and one each for sign of exponent and mantissa), represent the following
numbers in normalised floating point form :
(i) 89.36
(ii) — 0.00004375
(iii) 87604
(use chopping, if required)

(26) Find the sum of two floating numbers
x1-- .5307 x 104 and x2 = .4252 x 103

(27) Write the following system of linear equations in matrix form :
5x — 9y =14
2x + 5y =11

(28) State the following two formulae for interpolation :
(i) Newton's Forward difference formula
(ii) Stirling's formula

(29) Define each of the concepts with suitable  example.
(i) Degree and order of a differential equation
(ii) Initial Value Problem

(30) Explain the advantages of normalized  floating point number over un-normalized
numbers.

(31) For solving a system of linear equations :
an x1+ a12 x2 + a13 x3 = bi;
a21 x1 + a22 x2 + a23 x3 = b2 and
a31 x1 + a32 x2 + a33 x3 = b3, by iterative
Gauss-Jacobi Method, with initial
approximations, x1 = 0 = x2 = x3, give formulas for next approximations of x1, x2
and x3.


(32) What are the advantages of iterative  methods over direct methods for solving a
system of linear equations.

(33) We are given the Initial Value Problem (IVP)  y'= 1 — 2xy, y(0.2) = 0.1948 with h= 0.2,
using Euler's Method, find y(0.4). The independent variable is x.

(34) Find the product of the two numbers a and b given above

(35) Write the following system of linear equations in matrix form
8x + lly = 19
12x + 5y = 17

(36) Write briefly the steps of bisection method to find out the roots of an equation ?

(37) What are the relative advantages of iterative methods over direct methods
 for solving a system of linear equations ?

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January 16, 2021

IGNOU MCA Books /blocks/study metrials Pdf

IGNOU MCA Books /blocks/study metrials For 2020-2021 Session: If you were searching for the IGNOU MCA Books /blocks/study metrials for 2020-21 Session then finally you are at right place as IGNOU MCA Books /blocks/study metrials for 2020-21 is now available MCA Books /blocks/study metrials  PDF files from here.




IGNOU MCA Books /blocks/study metrials For 2020-2021,2022 Session

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All BOOKS MCA STUDENTS

IGNOU MCA Books /blocks/study metrials For 2020-2021,2022 Session
IGNOU MCA  1st Semester           

MCS-011  Problem Solving and Programming Click here    

MCS-012  Computer Organisation  Assembly Language Programming Click here 

 MCS-013  Discrete MathematicsClick here

 MCS-014 Systems Analysis and DesignClick here

 MCS-015  Communication Skills Click here     

 MCSL-016 Internet Concepts and Web design (the Lab Course)Click here

MCSL-017  Lab (C and Assembly Language Programming) (the Lab Course) Click here      

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IGNOU MCA  2nd Semester


MCS-021  Data and File structures Click here

 MCS-022  Operating System conceptsClick here       

 MCS-023  Introduction to Database Management Systems  Click here

 MCS-024   Object Oriented Technology and Java ProgrammingClick here          

 MCSL-025  the Lab (Data Structures using C, WINDOWS 2000, LINUX / UNIX, Java and MS? ACCESS, My SQL)  Click here

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IGNOU MCA  3rd Semester


MCS-031    Design and Analysis of Algorithms   Click here    

 MCS-032   Object Oriented Analysis and Design Click here 

 MCS-033   Advanced Discrete Mathematics  Click here     

 MCS-034   Software Engineering  Click here

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 MCSL-036 Laboratory Course (the For Object Oriented Analysis and Design, Software Engineering and Accountancy and Financial Management) Click here       


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IGNOU MCA  4th Semester

  MCS-041  Operating Systems  Click here     
    
 MCS-042  Data Communication and Networks  Click here  

 MCS-043   Advanced Database Management Systems    4 Click here

 MCS-044   Mini Project     Click here      

 MCSL-045    UNIX and DBMS LAB     Click here  

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IGNOU MCA  5th Semester


MCS-051    Advanced Internet Technologies 

BLOCK 1  CLICK 


BLOCK 2 CLICK


BLOCK 3  CLICK


MCS-52  Principles Of the Management And Information Systems Click here


 MCS-053  Computer Graphics and Multimedia Click here 

 MCSL-054    Laboratory Course (Advanced Internet Technologies & Computer Graphics and Multimedia)Click here

 MCSE-003    Artificial Intelligence and Knowledge Management Click here       
 MCSE-004    Numerical and Statistical Computing  Click here

 MCSE-011    Parallel Computing  Click here   

IGNOU MCA  6th Semester

MCSP-060     Project  comingSoon         




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