BACHELORS IN COMPUTER APPLICATIONS COMPUTER NETWORKS PAPER CODE: BCA-401

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1 BACHELORS IN COMPUTER APPLICATIONS COMPUTER NETWORKS PAPER CODE: BCA-401 SECTION-A Answer the following questions in around 100 words. 1. What information is contained in the control field of HDLC protocol? 2. What is the frame relay technology? 3. What is Ethernet? 4. What is different betw een pure ALOHA and slotted ALOHA protocol? 5. What is the purpose of Media Access Sub Layer in computer netw ork? 6. How is redundancy related to error detection and correction? 7. What is sub netting? 8. What is difference between a bridge and sw itch? 9. What is the function betw een ARP protocols? 10. What is the difference betw een router and gatew ay? 11. What is the role of CSMA/CD Protocol? 12. What is DNS (domain name system)? 13. What is a firew all? 14. What are the advantage and disadvantage of using a star topology in computer netw ork? 15. Explain in brief the w orking of circuit switching. 16. How the token passing technique is useful in accessing the netw ork resources 17. Discuss the role of netw ork layer in OSI reference model. 18. What is a hybrid netw ork? 19. What is error control? 20. Differentiate betw een fiber optic and tw isted pair cable'?

2 SECTION-B Answer the following questions in around 225 words. 1. Explain the use of hamming code for error detection w ith the help of suitable example. 2. Discuss OSI model for netw orking. 3. What is check sum? List the steps involved in creating a checksum. 4. What are security attacks? Explain the various security attacks. 5. Explain various peripheral devices used in netw orking. 6. Explain various multiplexing techniques in netw orking. 7. What is an IP address? Explain the various naming scheme used in netw orks. 8. Write a short note on Infrared Transmission. 9. What is the difference betw een ARP/RARP? 10. What are different cables used for networking? 11. Differentiate betw een HDLC and SDLC. 12. Compare features of Bridges and Sw itches. 13. List various types of routing algorithms. 14. Write a detailed note on major issues for routing protocols. 15. List and explain various communication sw itching techniques.

3 BACHELOR IN COMPUTER APPLICATIONS DATABASE MANAGEMENT SYSTEMS PAPER CODE: BCA-402 SECTION-A Answer the following questions in around 100 words. 1. Define Normalization. 2. What is an attribute? 3. Define View 4. What do you do you mean by DBMS? 5. Describe two phase Locking Protocol? 6. What is the meaning of transaction COMMIT? 7. What is Relational algebra? 8. What is a transaction? 9. Explain two phase locking protocol? 10. Explain the concept of Foreign key. 11. What is difference between Security and Integrity? 12. Name various types of Locks available in DBMS? 13. What are concurrent transactions? 14. What is vertical fragmentation? 15. Define the difference between logical and physical data Independence? 16. Differentiate primary key and foreign key? 17. Define Domain relational calculus? 18. Describe DDL statements in SQL. 19. Define constraints. 20. What is candidate key?

4 SECTION-B Answer the following questions in around 225 words. And Use figures, diagrams and illustrations wherever required. 1. Explain the advantage of distributed databases. 2. What is database recovery? Explain immediate update technique of recovery. 3. Explain three level architecture of DBMS. Draw a net diagram of it? 4. Draw E-R diagram of banking management system. Assume the structure of a bank and various relations. 5. What is the need of normalization and explain its various forms. 6. What is Relational algebra and explain. Explain various operators used in it. 7. What is view? How view is created? Explain. 8. Give the example of any two DML statements. 9. What are the various method of implementing security and Integrity in DBMS? 10. Explain ACID properties of transaction in detail. 11. What is database security? Explain different security threats. 12. Explain Relational model? Explain its properties. 13. What is data model? Explain different data model. 14. Compare network and Hierarchal model. 15. Explain different attributes and relationship types of E-R model.

5 BACHELOR IN COMPUTER APPLICATIONS COMPUTER SYSTEM ARCHITECTURE PAPER CODE: BCA-403 SECTION-A Answer the following questions in around 100 words. 1. Write the truth table of AND, OR gate. 2. What are hardwired controls? 3. What is Excess-3 code? 4. What are logic gates? Tell the names of all logic gates. 5. What is AND gate. Draw its figure. 6. What is OR gate. Draw its figure. 7. What is the need of auxiliary memory? 8. What is Half Adder? 9. What is the difference between micro operation and micro instruction? 10. What are SISO and SIPO? 11. What are computer instructions codes? 12. Give an example of I/O Interface unit using block diagram. 13. What is Stack? 14. What is a D- flip flop? 15. Explain the meaning of the memory- reference instruction AND to AC. 16. Define the terms microprocessor & multiprocessor. 17. What are the addressing modes? 18. What is a Counter? 19. How Cache Memory is useful in memory hierarchy? 20. What do you mean by Isolated I/O Concept?

6 SECTION-B Answer the following questions in around 225 words. 1. Discuss the various modes of data transfer. 2. Explain functions of channels. What are various applications of channels? 3. What is Auxiliary memory? Explain different types of auxiliary memory. 4. What is the difference between hardwired and Micro programmed control? 5. What is the difference between RISC and CISC? 6. Why CISC machines are more compatible than RISC machines? 7. Explain I/O interrupt in detail. 8. Explain the cache memory and its applications. 9. What is DMA? Explain in detail. 10. What is Virtual Memory and Demand paging? 11. Explain the interrupt cycle? Draw the flow chart. 12. Explain the various page replacement techniques. 13. What are the various I/O data transfer modes? Differentiate between them 14. List the control functions and micro operations needed for the execution of memory reference instructions. 15. Illustrate the influence of the number of addresses on computer programs by evaluating the following statement using zero, one, two and three address Instructions. X:(A+B)*(C+D)

7 BACHELOR IN COMPUTER APPLICATIONS OPERATING SYSTEM PAPER CODE: BCA-404 SECTION-A Answer the following questions in around 100 words. 1. What is process state? 2. What are the disadvantages of FCFS Scheduling? 3. What is Priority Queue? 4. What is the need of operating system? 5. What is the difference betw een turnaround time and response time? 6. What type of fragmentation is there in case of paging and w hy? 7. What are the disadvantages of deadlock? 8. Describe tw o examples of deadlock? 9. What is difference between authentication and authorization? 10. Differentiate resource allocation graph and w ait for graph. 11. What is semaphore? 12. What is deadlock avoidance? 13. Write short note on CPU scheduling? 14. Write short note on memory partitioning scheme. 15. Define demand paging. 16. Explain File Management System. 17. Discuss various attribute of file. 18. Explain the sequential access method. 19. What is need of providing security in an operating system? 20. What do you mean by user authentication?

8 SECTION-B Answer the following questions in around 225 words. 1. What is operating system? Explain its different services 2. Determine the differences of Preemptive and Non Preemptive Scheduling. 3. What is process control block? Explain w ith diagram all its contents. 4. Explain inter process communication w ith example of producer consumer problem. 5. Explain different security threats. 6. Explain the directory structure of an Operating System. 7. Describe the paging memory management technique w ith address translation and relocation. 8. Explain different allocation methods in files. 9. Explain four conditions, w hich are necessary to occur a deadlock. 10. What is Banker s algorithm? Make safe sequence by taking any examples. 11. Explain the C-SCA N disk scheduling algorithm. 12. Explain public key encryption w ith advantages and disadvantages. 13. What is Internal and External Fragmentation? 14. Discuss the client-initiated approach, 15. How can you handle the condition of dead lock?

9 Answer the following questions BACHELOR IN COMPUTER APPLICATION WORKSHOP ON VISUAL BASIC PAPER CODE: BCA-405 Q.1. Dev elop a program in VB to input three numbers in text boxes. Calculate & display totals in a label on clicking the command button TOTAL, Calculate & display average in another label on clicking the command button AVERAGE.EXIT command button to end the program. Q.2. Dev elop a program in VB f or password check through text box, on clicking command button CHECK should display the message Well! You may proceed otherwise should display message Wrong password, try again. EXIT command button to end the program. Q.3. Develop a program in VB to need a choice through input box, if choice is 1 it should display even number up to 20, if choice 2 it should display odd numbers up to 30 using select case statement Use EXIT command button to end the program. Q.4. Develop a program in VB to input a number in text box, check and display in label whether it is Armstrong on not. Use EXIT command button to end the program. Q.5. Develop a program in VB to input a number through text box on clicking the command button Factorial it should calculate & display the factorial in label control and on clicking the Command button CHECK, it should display whether the number is even or odd in the same label. EXIT command button to end the program. Q.6. Dev elop a program a program in VB to generate all the Prime numbers from 1 to 50 & display them in LIST box. Use EXIT command button to end the program. Q.7. Develop a program to create an array of 10 elements and sort it in ascending order. Q.8. Dev elop a program in VB to enter any number in text box and print the table of that number in list box. Q.9. Write a program to get the f actorial of a giv en number using msgbox and inputbox function.

10 Q.10. Write a suitable code in Key Press ev ent of textbox to convert the key ASCII argument into a character. Q.11. Write a program to enter any string in Textbox and print it in rev erse order. Q.12. Create a f orm called Frmchoice that allows y ou to open a file from any where in the disk and shows the contents of f ile in a text box. Q.13. Use Select Case Statement, make a program in which if the user enters the choice as 1, one message box should appear with the inf ormation text as January, and if the user enters 2, the message should be February, and so on. Q.14. Create a modal dialog boxes with two buttons- OK and CANCEL. On clicking OK button, a message box should appear with the text as You hav e clicked OK button, On clicking CANCEL button, message box should display You hav e clicked CANCEL button. Q.15. Dev elop Any program based on Scroll Bar Control. Q.16. Change background color and font of f orms. Also change icon of form. Q.17. What are the methods of List box Control used to manipulate the f ollowing: (a) Add items to the list (b) Remov e items f rom the list Q.18. Create a f orm called Frmdetails that accept personal details of an employee (Name, Address, Phone, Qualif ication Salary, Sex) and Pass these details to check command to v erify following things: Name should not be left blank Address should not be left blank Salary should not be less than zero If any such problems exist it should show proper error message and if ev ery thing is correct then it should show proper message. Q.19. Create a f orm called FrmViewDetails that allow user to v iew details of persons entered through f orm FrmPersonalDetails. It also permits the user to enter new details, save them in database, delete a particular record and update a particular record. Perform these Operations with Data Control. Q.20. Using Menu Editor Develop a program.

ASSIGNMENT-1 M.Sc. DEGREE EXAMINATION, MAY 2018 (First Year) INFORMATION TECHNOLOGY Basics of Information Technology

ASSIGNMENT-1 M.Sc. DEGREE EXAMINATION, MAY 2018 (First Year) INFORMATION TECHNOLOGY Basics of Information Technology ASSIGNMENT-1 () Basics of Information Technology (DMSIT01) Q1) Discuss in detail about IT support at different organizational levels. Q2) Explain about hierarchy of computers. Q3) Discuss different categories