Code: DC-03                                                              Subject: COMPUTER 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. _______ unit coordinates the sequencing of events within the central processor of a computer.

(A)  Logic unit.                                    (B)  Arithmetic unit.

(C)  Storage unit.                                 (D)  Control unit.

b. Which of the following is not a direct entry input device?

(A) Optical scanner.                           (B)  Digitizer.

(C)  Keyboard.                                   (D)  Light pen.

             c.   A network, which is used for sharing data, software and hardware among several users of microcomputers, is called

(A)  Wide Area Network.                  (B)  Metropolitan Area Network.

(C)   Local Area Network.                  (D)  Value Added Network.

             d.   The instructions / programs that are loaded into main memory when a computer is booted are

(A) Internal commands.                      (B) External commands.    

(C)  Utility Programs.                          (D) Loader.          

             e.   Which of the following types of memory loses data when power is switched off?

(A) Magnetic tape                              (B)  Static Random Access Memory

(C)  Magnetic disk                               (D)  CD-ROM

             f.    Which is the latest write-once optical storage media

(A) Digital Page.                                 (B)  CD - ROM disk.

(C)  WORM disk.                               (D)  Magneto- optical disk.

             g.   The factor that does not affect the storage capacity of a hard disk

(A) Track density.                              (B)  Height of the hard disk drive.

(C)  Recording density.                        (D)  Number of plates.

             h.   The operating system that reads and reacts in terms of actual time is

(A) Batch system.                               (B) Quick response system.

(C)  Real time system.                          (D) Time sharing system.

             i.    Which of the following is a spreadsheet package?

(A) Corel Draw.                                 (B) Wordstar

(C) EXCEL.                                        (D) MS-WORD.

             j.    Find and Replace option is placed under the__________ menu.

(A)  Edit.                                             (B)  Insert.

(C)  View.                                           (D)  File.

Answer any FIVE Questions out of EIGHT Questions.

Each question carries 16 marks.

Q.2     a.   Give the full form of the following abbreviations:                                                  (3)

i) RISC

ii) UNIVAC

iii) BASIC

             b.   Write about the hardware components used in the various generations of the computers. Give two examples of different computers used in different generations.                                                            (5)

c.   What are the five basic operations performed by computer systems to convert raw input data into useful information for the user?  Name the components of the computer that perform those operations.     (8)

Q.3     a.   A 6 platter hard disk has 600 tracks per surface. There are 10 sectors per track and    512 bytes per sector. What is the storage capacity of the disk? How many cylinders does the disk pack have? How many tracks are there per cylinder?                                                                                        (4)

            b.   Define the following terms with reference to a magnetic disk.            (4x1.5=6)

                   i)  Access time.       ii) Seek Time.      iii) Latency Time.                  iv) Transfer rate.

             c.   Mention two advantages and two limitations of magnetic tapes for storage of digital information.                                                                 (6)

Q.4     a.   What is the voice reproduction system? How does it function? Give two applications.                     (6)

b.   Name the display technologies used by the flat panel monitors. Which is the most commonly used in flat panel monitors and why?                      (4)

c.    Give one example of the following printers:                                            (4)

                   i) Impact printers.    ii) Non impact printers.    iii) Character printers.  

                   iv) Page printers.

           d.   Give full form of the following:                                                                              (2)

i) OCR

ii) MICR

Q.5     a.   What is an image scanner? Explain the two types of image scanners. Give the limitations of image scanners.                                                            (2+4+2)

     b.   Explain with the help two examples, how software can be used as teaching and learning tool?                                                                     (4)

c.  What are the functions of a communication software?                                           (4)          

  Q.6     a.  Distinguish between single use and multi-user operating system with an example.                  (4)

 b.   What are the functions of the following?                                                             (3)

(i) Program control Register.

(ii) Instruction Register.                 

(iii) Decoder.

 c.   Explain the operation of a cache memory.                                              (3)

d.   Name and explain the different types of ROM’s.                                   (6)

Q.7      a.  In DOS, what do these commands do?                                                              (4)

                   i) COPY             ii) CHKDSK           iii) PROMPT            iv) DISKCOMP

             b. Explain about the different types of memory buses interconnecting the memory

                 and the CPU.                                                                                                     (6)

             c.  Give the major features of windows 98.                                                              (6)

Q.8     a.  When are the two processes said to be in a deadlocked state. Explain with the    

help of an example.                                                                                (8)

            b.  What is paging? Explain paging mechanism with the help of an example.     (8)

Q.9      a.  It is required to print the current date at the right-bottom and a heading at the  

top-center of the page. Give steps to achieve this.                                    (4)

b.  Explain the word wrap feature in MSWORD.                                                     (4)

            c.  A worksheet contains the following details. Give the steps to insert a bar chart

                 of the Amount in all years.                                                                                   (4)

                                                                                                               A            B            C            D            E            F

                          Sales        1981       1982       1983       1984      1985       1986

                     Amount      50           54            62          78           75          79

                     In crores

           d.  Explain the functions in a spreadsheet package.                                                    (4)

                 i) MIN                       ii) SUM