Operating System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 1

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Total No. of Questions : 13]

PAPER ID A0219

BCA (Semester -4th)

OPERATING SYSTEMS

BCA-404

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.       

a.     What are the disadvantages of batch processing system?

b.     What is process state

c.      Describe the function of dispatcher

d.     What is the difference between hard real time systems and soft real time system?

e.      What is the need of operating system?

f.       What is the difference between turnaround time and response time?

g.     Differentiate logical and physical address space

h.     Describe different steps in case of page fault.

i.       What type of fragmentation in three in case of paging and why

j.       What areth disadvantages of FCFS scheduling?

k.     Describe two example of deadlock.

l.       What is the difference between authentication and authorization ?

m.  Differentiate resource allocation graph and wait for graph.

n.     What is semaphore?

o.     What is deadlock avoidance ?

Section –B

2.     What is operating system ? explain its different services. 

3.     Explain different function performed by operating system in multi programming.

4.     What is process control block? Explain with diagram and its contents.

5.     Explain inter process communication with example of producer consumer problem.

6.     Explain scheduling criteria

7.     Explain the difference between multilevel queue scheduling and multilevel feedback queue scheduling.

8.     Describe the paging memory management technique with address translation and relocation .

9.     Explain different allocation methods in files.

10.                        Explain four conditions which are necessary to occur a deadlock

11.                        What is Banker’s algorithm? Make safe sequence by taking any example

12.                        Explain different security threats.

13.                        Explain public key encryption with advantages and disadvantages.  

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Database Management System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 3

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Total No. of Questions : 13]

PAPER ID A0217

BCA (Semester -4th)

DATABASE MANAGEMENT SYSTEM

BCA-402

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.      

a.     What is database?

b.     Describe few disadvantages of databases.

c.      Define  data independence

d.     What is partial key?

e.      Differentiate referential integrity constraints and entity integrity constraints

f.       Describe the division operation in relation algebra.

g.     Describe the types of relational calculus.

h.     What Is multivalve dependency ?

i.       What is the need of normalization ?

j.       Describe DML statement in SQL

k.     What is the  difference between UNDO and REDO operation?

l.       What is database audit?

m.  Describe  in place updating and  dirty read in concurrency problems

n.     What is the difference between horizontal and vertical fragmentation  ?

o.     Describe WAL (write ahead logging ) protocol.

Section –B

2.     What is database administrator? Explain its responsibilities.

3.     Explain three level architecture of database.

4.     Compare network, hierarchical and relational models.

5.     Explain the naming conventions in design of E-Remodel.

6.     What is relational algebra? Explain different relation al algebra operations.

7.     Explain different constraints in SQL

8.     What is normalization ? explain first three normal forms.

9.     What are inference rules? How we can derive further rules using Armstrong rules.

10.                        What is database recovery? Explain immediate update and differed update techniques of recovery.

11.                        What is shadow paging ? explain its advantages and disadvantages

12.                        Explain the structure of distributed databases.

13.                        What is database security? Explain different security techniques,     

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Database Management System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 2

Roll no ……..
Total No. of Questions : 13]

PAPER ID A0217

BCA (Semester -4th)

DATABASE MANAGEMENT SYSTEM

BCA-402

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

Q1)

a) What is difference between data and information?

b) What are data views?

c) What do you mean by data redundancy?

d) What is data independence?

e) What are single-valued and multivalued attributes?

f) What is a binary relationship set?

g) What is a tuple variable?

h) What is a query language?

i) What do you mean by database schema?

j) Define the term data manipulation language.

k) What are stored procedures?

1) What do you mean by the term deadlock?

m) What are graphical user interfaces?

n) What do understand by a distributed database?

o) What is data replication?

Section - B

Q2) Describe major advantages and disadvantages of a database system.

Q3) Explain the difference between physical and logical data independence.

Q4) List major steps that you would take in setting up a database for a particular

enterprise.

Q5) Define the concept of aggregation. Give two examples of where this concept

is useful.

Q6) Explain the distinctions among the terms primary key, candidate key and super key.

Q7) Explain the difference between a weak and a strong entity.

Q8) Describe the differences in meaning between the terms relation and relation

schema with the help of suitable examples.

Q9) Discuss the basic operations that can performed using relational algebra.

Q10) Discuss various set operations that can be performed in SQL.

Q11) Draw an ER diagram for a hospital management system, make suitable

assumptions.

Q12) Discuss the advantages of distributed databases.

Q13) Compare the shadow-paging recovery scheme with log-based recovery

schemes.

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Database Management System, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 1

Roll no ……..
Total No. of Questions : 13]

PAPER ID 2037

BCA (Semester -4th)

DATABASE MANAGEMENT SYSTEM

BCA-402

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

Q1)

a) What is difference between data and information?

b) What are data views?

c) What do you mean by data redundancy?

d) What is data independence?

e) What are single-valued and multivalued attributes?

f) What is a binary relationship set?

g) What is a tuple variable?

h) What is a query language?

i) What do you mean by database schema?

j) Define the term data manipulation language.

k) What are stored procedures?

1) What do you mean by the term deadlock?

m) What are graphical user interfaces?

n) What do understand by a distributed database?

o) What is data replication?

Section - B

Q2) Describe major advantages and disadvantages of a database system.

Q3) Explain the difference between physical and logical data independence.

Q4) List major steps that you would take in setting up a database for a particular

enterprise.

Q5) Define the concept of aggregation. Give two examples of where this concept

is useful.

Q6) Explain the distinctions among the terms primary key, candidate key and super key.

Q7) Explain the difference between a weak and a strong entity.

Q8) Describe the differences in meaning between the terms relation and relation

schema with the help of suitable examples.

Q9) Discuss the basic operations that can performed using relational algebra.

Q10) Discuss various set operations that can be performed in SQL.

Q11) Draw an ER diagram for a hospital management system, make suitable

assumptions.

Q12) Discuss the advantages of distributed databases.

Q13) Compare the shadow-paging recovery scheme with log-based recovery

schemes.

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Computer System Architecture,Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 3

Roll no ……..
Total No. of Questions : 13]

PAPER ID A0218

BCA (Semester -4th)

COMPUTER SYSTEM ARCHTECTURE

BCA-403

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.       

a.     Define the term instruction code.

b.     What information is there in DR, AC, IR and TR?

c.      What are register reference instructions?

d.     What are the major components of CPU?

e.      What is control word?

f.       Convert A*B+C*D into reverse polish notation

g.     What are the advantages and disadvantages of three address instructions ?

h.     What is the task of MOV instruction?

i.       What is handshaking?

j.       Difference RAM and ROM

k.     What is the difference between multiprogramming and timesharing  systems?

l.       Define seek time and rotational latency time.

m.  What is the difference between logical address space and physical address space?

n.     Describe types of fragmentation.

o.     Define cache memory.

Section –B

2.     With the help of diagram explain stored program organization.

3.     Explain the three basic computer instruction formats.

4.     Explain instruction cycle in detail.

5.     What are the different operations performed on stack explain in detail?

6.     What are addressing modes? Explain all types of addressing modes?

7.     Differentiate control bus data bus and address bus.

8.     Explain in detail memory mapped I/O and how it differs  from isolated I/O

9.     Explain the difference between programmed I/O and interrupt initiated I/O

10.                        Explain the memory hierarchy in computer system.

11.                        Explain  ROM chip with the block diagram.

12.                        What are the difference between magnetic tapes and magnetic disks?

13.                        Explain the address mapping using pages and why the size of page is power of 2.  

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Computer System Architecture,Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 2

Roll no ……..
Total No. of Questions : 13]

PAPER ID A0218

BCA (Semester -4th)

COMPUTER SYSTEM ARCHITECTURE

BCA-403

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.       

a.     What are stack pointer?

b.     Define OP codes.

c.      What is zero address instruction?

d.     What are I/O ports?

e.      What is the function of associative memory ? what is another name of it?

f.       Write a note on computer registers.

g.      Briefly explain the stack limits.

h.     What are  the three major phases through which the control unit go through an instruction cycle?

i.       Define cache memory.

j.       What is asynchronous data  transfer?

k.     Differentiate between isolated I/O and memory mapped I/O?

l.       Define memory hierarchy.

m.  What is the function of accumulator in 8 bit microprocessor.

n.     Differentiate between interpreter and compiler.

o.     What do you understand by Interleaved DMA?

Section –B

2.     Write a step wise procedure to write information in computer’s memory

3.     Discuss the various phases of instruction cycle.

4.     Explain the control unit architecture.

5.     List the control functions and micro operations needed for the execution of memory reference instructions.

6.     Draw a block diagram for data transfer form CPU to an interface and then to an I/O device. Determine the procedure for sitting and clearing the flag bit.

7.     What is the difference between a direct and indirect address instruction? How many reference to memory are needed for each type of instruction to bring an operand into a processor register?

8.       

a.     Differentiate between RISC and CISC.

b.     What is the difference between hardwired control and micro programmed

9.     Discuss the various modes of data transfer.

10.                        Draw and explain address and data bus structure of 8 bit microprocessor.

11.                        Determine the methods to handle branches in a pipeline instruction execution unit

12.                        Write an algorithm for multiplication  of two unsigned numbers using shift and add method.

13.                        Write short notes on the following.

a.     Array processor

b.     Memory management Techniques  

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Computer System Architecture,Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 1

Roll no ……..
Total No. of Questions : 13]

PAPER ID 2037

BCA (Semester -4th)

COMPUTER SYSTEM ARCHITECTURE

BCA-403

Time :3 Hours

Instruction to Candidates:

1.     Section – A is compulsory.

2.     Attempt any Nine questions from section- B

Section –A

1.      

a.     Define the term operation code.

b.     What information is there in INPR and OUTR?

c.      Differentiate LDA and STA instruction

d.     What is the task of ALU

e.      What is stack pointer?

f.       Convert (3*4)+(5*6) into reverse polish notation.

g.     What are the one address instruction ?

h.     What is the task of LOAD instruction ?

i.       What is asynchronous data transfer?

j.       Differentiate main memory and secondary memory.

k.     What is swapping ?

l.       Define content addressable memory.

m.  Write short note on dynamic loading.

n.     Differentiate external and internal fragmentation.

o.     What the difference between sequential access and direct access?

Section –B

2.     Explain the demonstration of direct and indirect addressing by taking examples .

3.     Explain the difference between hardwired control and micro programmed control.

4.     Explain memory reference instructions in  detail.

5.     What are the difference between register stack and memory stack?   

6.     Explain all types of addressing modes?

7.     Explain the bus architecture in input output interface.

8.     Describe four possible devices that produce an acceptable output for person to understand.

9.     Explain the  difference between programmed I/O and interrupt initiated I/O.

10.                        Explain  DMA and  why does  DMA have priority over the CPU when both request memory transfer.

11.                        Explain RAM chip with the block diagram.

12.                         What is booting and what function are done by boot strap loader.

13.                        Explain different page replacement algorithms.

   

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Computer Networks, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 2

Roll no ………

Total No. of Questions : 13]

 [A0216]

BCA(Semester -4^th)

COMPUTER NETWORKS

(BCA-401)

Time:3 Hours

Instruction to Candidates:

1.     Section : A is compulsory.

2.     Attempt nay nine questions form section –B

Section –A

1.       

a.      What are the important features of a computer network?

b.     What do you mean by helf-duplex transmission mode?

c.      What is cladding.

d.     What are the types of Transmission media?

e.      What do you mean by leased line?

f.       What are the important topologies for networks?

g.     Why is coaxial cable superior to twisted –pair cable?

h.     What are the important function of Data link Layer?

i.       Briefly explain the CSMA/CD protocol.

j.       Write short notes on : repeaters and Hubs.

k.     Differentiate between digital and analog communication

l.       What do you mean by PPP?

m.   What are standards

n.     What do you mean by serial communication?

o.     Discuss the various types of wireless transmission ?

Section –B

2.     What are the various reasons for having network standards? Explain.

3.     What is layered architecture? What is the need for layered architecture?

4.     What are the various layers present in the OSI model?

5.     What are switches? How they are different from hubs?

6.     Explain the concept of multiplexing.

7.     What do you mean by broadband ?

8.      Differentiate between packet switching and circuit switching.

9.     Mention the advantages of optical fiber transmission media.

10.                        Describe the services provided by the session’ layer and discuss

11.                        What is a Bridge? When is it used?

12.                        Write a short not on IEEE standards.

13.                        Write short notes on HDLC. 

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Computer Networks, Question Paper of BCA (D) 4th Semester, Download Previous Years Question Paper 1

Roll no ………

Total No. of Questions : 13]

J-3169[s-1025]

[2037]

BCA(Semester -4^th)

COMPUTER NETWORKS

(BCA-401)

Time:3 Hours

Instruction to Candidates:

1.     Section : A is compulsory.

2.     Attempt nay nine questions form section –B

Section –A

1.       

a.     A signal travels from point A to point B. at the point A, the signal power is 200 W. at the point B, the power is 170 W. what is the attenuation in decibels?

b.     What is the primary cause of signal loss in satellite communication ?

c.      How the TDM is different from FDM?

d.     What is the role of address filed in a packet travelling through a datagram network?

e.      List the advantages of layering as seen in TCP/IP architecture.

f.       What are major limitations of twisted –pair wire?

g.     How is redundancy related to error detection and correction?

h.     Explain the difference between Telephone and leased line communication channels.

i.       Give examples of where star and ring topologies will be useful.

j.       What is the role of MAC sub layer?

k.     Explain in brief the working of packet switching

l.       What are the benefits of using fiber transmission?

m.  How you will manage flow control at Data link layer level?

n.     Why we need network reference models?

o.     What are the important properties of broadband communication channels?

Section –B

2.     Draw a flow chart showing how asynchronous serial data can be sent from a port line suing software routine.

3.     Given the data word 1010011010 and the divisor 10111 show the generation of codeword at the sender side and checking at the receiver side.

4.     Discuss the architecture of OSI model.

5.     The attenuation of a signal is – 12Db. What is final signal power if it was originally 4 W.

6.     Write a detailed note on circuit switching.

7.     Describe the role of DTE devices in communication.

8.     Write a short note on infrared Transmission.

9.     Differentiate between HDLC & SDLC.

10.                         Discuss the modes for propagating light along optical channels.

11.                        Discuss the basic principles used in defining the OSI layers.

12.                        Explain the use of hamming code  for error detection with the help of suitable example.

13.                        Differentiate between microwave and radio transmission 

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