IGNOU BCA CS-611: COMPUTER FUNDAMENTALS AND PC SOFTWARE - JUNE 2002 QUESTION PAPER
Term-End Examination
June, 2002
CS-611: COMPUTER FUNDAMENTALS AND PC SOFTWARE
Time : 2 Hours
Max. Marks : 60
Note: Question number 1 is compulsory.Attempt any three questions from the rest.
1.(a) What is the structure of a Basic computer? What is the need of various components of a Basic computer as defined by von Neumann? Are they a must for a computer system? Justify your answer. [5]
(b) Why is the main memory of a computer also called RAM? What is static RAM and how is it similar/different to dynamic RAM? Can RAM be totally replaced by Cache memory? Justify your answer. [5]
(c) What are the advantages of Graphical User Interface? What is the need of having various components of Graphical User Interface? [5]
(d) What is the usefulness of Wide Area Network (WAN)? How is the topology of WAN different from that of Local Area Networks (LAN)? Which topology and communication channel will you suggest for LAN located in a building? Justify your answer. [5]
(e) How will you represent a table in a computer using a programming languages? Give definition of the element used by you and give reason of your selection. To multiply two matrices would you like to define a function or a subroutine? Justify your answer. [5]
(f) What is the need of crytography? Describe the data Encryption Standard (DES) with the help an example. [5]
2.(a) What is meant by Serial and Parallel Interfaces? Where are they used? [2½]
(b) What is an assembly language? Is it still needed? Give reason. Compare and contrast assembly language to third generation languages. [2½]
(c) What is Direct Memory Access? Where is it used in a Computer? How is it different from having the CPU doing Input/Output? [2½]
(d) What is meant by the term Reduced Instruction Set Computers (RISC)? What are their characteristics? [2½]
3.(a) What is protocol in the context of Local Area Network? Define a protocol used in LANs. [2½]
(b) What is multiplexing in the context of computer network? Where will it be needed? [2½]
(c) What are the various types of switching methods in LANs? Describe any one of those. [2½]
(d) What is the purpose of having layered architecture for computer networks? What is the purpose of Data-Link and Network layers? [2½]
4.(a) What is distributed operating system? How is it different to multiprogramming operating system? What are the applications where you would like to use distributed operating system? [5]
(b) What is batch operating system? What were the disadvantages of this system that led to multiprogramming system? What is multitasking? What are its applications? [5]
5.(a) What is the need of a presentation software like PowerPoint? Describe five most important features needed in a presentation package. Give reason for your selection. [5]
(b) What are the threats to computer security? What is computer virus? Does a password authentication mechanism prevent computer virus? Justify your answer. What are the areas a computer virus can destroy? [5]
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