Code: D-14                                         Subject: COMPUTER SOFTWARE FUNDAMENTALS

Time: 3 Hours                                                                                                     Max. Marks: 100

NOTE: There are 9 Questions in all.

· Question 1 is compulsory and carries 20 marks. Answer to Q. 1. must be written in the space provided for it in the answer book supplied and nowhere else.

· Out of the remaining EIGHT Questions answer any FIVE Questions. Each question carries 16 marks.

· Any required data not explicitly given, may be suitably assumed and stated.

Q.1       Choose the correct or best alternative in the following:                                         (2x10)

a. Which of the following files is automatically executed at the time of booting of computer? 

(A)  AUTOEXEC.BAT                       (B)  DIR

(C)   COPY                                        (D)  MD

b. In a FORTRAN program given I = 4, J =5 and K = 10, the value of the expression I * I/J – K * 2/I will be

(A) 2                                                  (B)  -2

(C)  -2.2                                             (D)  2.2

             c.   In BASIC, descriptive comments are put in the source program with the

(A) Print statement.                             (B)  Remark statement.

(C)  Input statement.                            (D)  Data statement.

             d.   The two operators && and || in ‘C’ package are

(A)  Arithmetic operators.                   (B)  Equality operators.

(C)  Logical operators.                        (D)  Relational operators.  

             e.   A text file has an extension

(A) .COM                                         (B)  .BAT

(C)  .BAS                                           (D)  .TXT

             f.    ______________ is the short cut command for opening a new document

(A) Ctrl N                                          (B)  Ctrl O

(C)  Ctrl P                                           (D)  Ctrl X

             g.   “Cascade”  is used to

(A) Append two files.                         (B)  Open multiple files.

(C)  Join two words.                            (D)  Insert a picture into a text file.

h.   Compilers can diagnose

(A) Grammatical errors only.               (B) Logical errors only.

(C) Grammatical and logical errors.      (D) Neither grammatical nor logical

errors.

             i.    Which of the following program is not an utility program?

(A) Debugger                                     (B) Editor

(C) Spooler                                         (D) Defragmenter

             j.    _________ technique stores a program on disk and then transfers the program into main storage as and when they are required.

(A)  Spooling                                       (B)  Swapping

(C)  Thrashing                                     (D)  Paging

Answer any FIVE Questions out of EIGHT Questions.

Each question carries 16 marks.

Q.2     a.   Draw a flowchart for obtaining the sum of first N natural numbers.                       (8)

             b.   A company gives the commission to its sales persons on the following basis:

                   Commission is 1% on the sales less than 1000.

                   Commission is 5% on the sales greater than or equal to 1000, but less than 10000.

                   Commission is 10% on the sales greater than or equal to 10000.

                   Write the pseudocode for the above commission policy.                                     (8)

Q.3     a.   Explain top-down design method of programming.  Give the advantages of this method.                 (8)

             b.   Write an algorithm to find the factorial of a given number.                                    (8)

Q.4     a.   Write a program in C to convert the given temperature in Fahrenheit to Centigrade temperature.  Given (8)

b.   Explain the characteristic features of high level languages.                                    (8)

Q.5     a.   Write a program in BASIC to find the perimeter and  area of a rectangle of length l and breadth b.                                                                        (6)

     b.   What is a compiler?  Why is it required?  A computer supports five high level languages.  How many compilers are required?  In which situations a compiler is preferred over an interpreter?      (2+2+2+4)

  Q.6     a. What is the necessity of organizing of I/O software into series of layers? Explain the different layers of the I/O system.                                                (6)

             b.   What is spooling?  Why are mutually exclusive I/O devices converted into non-mutually exclusive I/O devices?  Explain how they are converted.                                                 (2+2+4)

             c.   How many characters are allowed for a file name in MS-DOS and Microsoft Windows?                (2)

Q.7           Differentiate between:

(i) CPU bound jobs and I/O bound jobs.

(ii) Tightly coupled and loosely coupled multiprocessing systems.

(iii) Internal fragmentation and External fragmentation.

(iv) Multiprocessing and Multiprogramming.                                (4 x 4)

Q.8     a.   Explain how the following actions can be carried out in the word processing packages.                  

(i) Entering mathematical equations.

(ii) Checking spelling.

(iii) Printing a document.                                                                               (6)

             b.   Name the commonly used methods for composing graphic objects.  Explain them.              (6)

c.   Explain about the preview feature of a word processing package.                        (4)

Q.9     a.   Give the steps to insert a series of values in continuous locations like names of the months of a year in an EXCEL worksheet.                             (4)

b.   Give the two ways of renaming a sheet in EXCEL.                                              (4)

c.   With the help of an example, give the steps to create a data table and draw the pie chart for the same example in an EXCEL spread sheet.    (8)