KRISHNA KANTA HANDIQUI STATE OPEN UNIVERSITY Hiranya Kumar Bhuyan School of Science and Technology Home Assignment

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Kimberly Garrett
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1 Computer Organization [BCA (S4)11] Q1. What is the difference between RS and JK flip-flop? Q2. Why NAND and NOR gates are called universal gates? Q3. What do you mean by an I/O interface? Q4. What is a RAID? Why it is so called? Q1. What is the difference between programmed I/O and interrupt driven I/O? Q2.What is an instruction set of a computer system? Do computers made by different manufacturer generally have the same or different instruction sets? Q3. Differentiate between CISC and RISC processors. Q4. Given the cache access time as 10 ns, memory access time as 100 ns and cache hit rate as 90%, calculate the effective memory access time. Q1. Differentiate between direct access and random access storage devices. In which category does a magnetic disc fall? Write reasons for your answer. Q2. What are addressing modes? Discuss any three addressing modes with suitable examples. Q1. What is meant by pipelining? Why do we require instruction pipelining? Explain its working procedure. Q2. State and prove the two basic De Morgan s theorems.

2 System Analysis and Design [BCA (S4)12] Q1. What is the purpose of a data validation program? Q2. Define Quality Assurance. Q3. What is the significance of feedback in System concept? Q4. What do you mean by Risk analysis? Q1. What is documentation? Explain the uses of documentation. Q2. Why is maintenance of a system necessary? Q3. What is the influence of coupling in system design? Q4. Differentiate between decision table and decision tree. Q1. Who is a system analyst? What are the roles of system analyst? Q2. Explain the importance of testing before the implementation of a system. Q1. Draw a DFD for a payroll system up to level 3. Q2. What is the purpose of information gathering tools? Explain what are questionnaires and site visits? Describe their advantages and disadvantages.

3 Programming in Java [BCA(S4)14] Q1. What is a Java applet? Q2. What is the meaning of package? Q3. What are the similarities between interface and classes? Q4. How is array declared and initialized in Java. Give an example. Q1. What do you understand by Swing and AWT? Explain their differences. Q2. How do you add a class or an interface to a package? Which package of Java contains Vector class? Q3. What is an exception? Is it essential to catch all types of exception? Q4. Write down the four basic steps to JDBC. Q1. What is an event? What do you mean by event handling? Q2. Write a program in Java for subtraction of matrices. Q1. Design a class to represent a bank account. Include the following data members: Account number, Depositor name, Account type, Balance amount in the account. Write Methods: To assign initial value To deposit an amount To withdraw an amount after checking balance To display depositor name and balance

4 Q2. Write a program in Java to find the area of a square, triangle and rectangle. Use inheritance with an abstract base class.

5 Assignment Guidelines A. Guidelines to Co-ordinators: 1. Assignments are parts of teaching-learning process and compulsory. 2. The spirit behind this is to help learners to understand the subject and prepare themselves better for the term-end examination. 3. Assignment responses are to be evaluated and feedbacks are required to be communicated to the learners, by giving back the assignments with evaluator s comments. Such assignments are to be collected at the time of issuing admit cards and be stored in the centre s office till the end of next semester. 4. Assignment marks are to be sent to the Controller of Examinations as soon as the examination routines are published. 5. Keeping the above points in mind Co-ordinators will fix the time/date of submission of assignments by the learners as may be convenient to follow the guidelines in true spirits. B. Guidelines to learners: 1. As soon as the SLMs are received the learners will write the assignments in their own handwriting (assignment questions may be downloaded from the website, if necessary) to be submitted to Coordinators as per the dates fixed for the purpose. Timely submission of assignments at the Study Centres will help in quick processing of results of respective learners. Otherwise this will create unnecessary delay in declaration of results. 2. Writing of assignment (work) and submission of the same in time is compulsory. Registrar N.B. The learners will have to collect receipt after submitting the assignment with the signature and seal of the collector of study centre and will have to keep with him/her till the declaration of result.... Receipt Received the assignment from Mr/Ms.Enrollment number of 4 th Semester BCA on Date: Signature of collector with seal ::: ::::: :::

COURSE: COMPUTER FUNDAMENTALS AND PC SOFTWARE (MCA -01)

COURSE: COMPUTER FUNDAMENTALS AND PC SOFTWARE (MCA -01) [Assignments are required to be written in your own language. Copying in toto from the learning materials will carry less score] A. Answer the following