so-it model question 02(2013)

BSCACADEMY SINCE1993

BSC Publishing Co. Pvt. Ltd.

Head Office

C-37, Ganesh Nagar, Pandav Nagar Complex, Delhi - 110092

Phone: 65252855, 56

E-mail: [email protected], [email protected],

Web Site :www.bscacademy.com, www.bsccareer.com

1 Each packet contains the full source and destination address, this statement indicates which of the following?

a) Virtual Circuit

b) Datagram

c) Data link

d) FDDI

e) None of these

Ans b)

2.Which of the following identities belongs to Demorgan’s therorems?

a) x+x=1

b) xy=yx

c) (xy)’=x’+y’

d) x.0=0

e) None of the above.

Ans c)

3. Network layer is responsible for ........................delivery of packet.

a) Source to Destination

b) End to end

c) Error free

d) Point to Point

e) None of these

Ans a)

4. An encoder has 2 to the power n input lines and ................output lines.

a) 2

b)2*n

c) n

d)n*n

e) None of the above

Ans c)

5. which of the following statement is used in the binary search algorithm to value of middle sub in the array?

a) =(start sub + stop sub)/2



Head Office


Phone: 65252855, 56



b) =(start sub – stop sub)/2

c) =start sub/2 + stop sub

d) = start sub/2 – start sub

Ans a)

6 Which of the following tool is known as the parser generator ?

a) Lex

b) Yaac

c) Tex

d) Emacs

e) None of these

Ans b)

7 which amongst them is not translator?

a) Assembler

b) Loader

c) Compiler

d) Interpreter


Ans b)

8) Which of the following code detects and corrects error in data?

a) Windows

b) Encryption

c) Hamming codes

d) All of these

e) None of these

Ans c)

9 BCNF is needed because

a) When a data is deleted tuples may be lost

b) Otherwise tuples may be lost

c) Updating is otherwise difficult

d) When there is dependent attributes in two possible composite keys is unnecessary duplicated in the tuples

e) None of these

Ans d)

10) What is the date function in SQL?

a) Date



Head Office


Phone: 65252855, 56



b) System date

c) Sysdate

d) Datesys

e) None of these

Ans c)

11. If each node in a tree has value greater than every value in its left subtree and has value less than every value in its

right subtree, the tree is known as ......................

a) Complete tree

b) Full binary tree

c) Binary search tree

d) Threaded tree

e) None of these

Ans c)

12. The loss in signal power as light travels down the fiber is called

a) Attenuation

b) Propagation

c) Scattering

d) Interruption

e) None of these

Ans a)

13. The relational database environment has all of the following components except

a) Users

b) Separate files

c) Database

d) Database administrator

e) None of these

Ans b)

14. A path in graph G, Which contains every vertex of G once and only once ?



Head Office


Phone: 65252855, 56



a) Eular tour

b) Hamiltonian path

c) Eular trail

d) Hamiltonian tour


Ans b)

15. The mechanism by which the data and function are bounded together with an object definition

a) Inheritance

b) Encapsulation

c) Abstraction

d) Polymorphism

e) None of these

Ans b)

16. Which of the following statement manages the changes made by DML statements?

a) SELECT

b) UPDATE

c) DELETE

d) COMMIT

e) None of these

Ans d)

17 Unix operating system is based on .......................

a) Language structure

b) Kernel approach

c) Virtual machine

d) Time sharing

e) None of these

Ans b)

18. What is term used to describe the situation when a derived class provides a function already provided in the base class.

a) Overloading

b) Overriding



Head Office


Phone: 65252855, 56



c) Polymorphism

d) Encapsulation


Ans b)

19. Concept of developing a compiler for a language by using subset of the same language known as ....................

a) Bootstrap

b) Lex

c) yacc

d) Analyzer

e) none of thease

Ans a)

20. ..................... is a communication device that combines transmissions from several I/O devices into one line.

a) Concentrator

b) Modifier

c) Full duplex

d) Multiplexer


Ans d)

21. In database we use which command to discard all pending data changes ?

a) Commit

b) Rollback

c) Savepoint

d) Lock


Ans b)

22 Which structure indicates many to many relation ?

a) Relational database



Head Office


Phone: 65252855, 56



b) Network database

c) Hierarchy structure

d) Chain


Ans b)

23. A address of the first element of array is called ................

a) First address

b) Location address

c) Initial address

d) Base address


Ans d)

24. Point to Point Protocol (PPP) used for which purpose ?

a) Error detection

b) Authentication

c) Both (a) and (b)

d) Either (a) or (b)

e) None of these

Ans c)

25) To overcome the difficulties of race around condition which of the following flip-flop is used?

a) JK flip-flop

b) SR flip-flop

c) D flip-flop

d) Master-slave flip-flop


Ans d)

26. Only the process executing the critical section is allowed access to the shared variable, all other processes should

prevented from doing so until the completion of the critical section. This is often referred to as ...............



Head Office


Phone: 65252855, 56



a) Semaphores

b) Deadlock

c) Mutual exclusion

d) Interprocess communication

e) None of these

Ans c)

27. Piggy backing is a technique for --------------

a) Flow control

b) Acknowledgement

c) Sequence

d) Instructions

e) None of these

Ans b)

28. How much bits addition is used by Full adder?

a) 2

b) 3

c) 4

d) Unlimited

e) None of these

Ans b)

29. Prefix to postfix is possible in which Data structure?

a) Stack

b) Queue

c) Link list

d) Tree


Ans a)



Head Office


Phone: 65252855, 56



30. A solution to the problem where the source and destination hosts are on the same type of network, but there is a

different network in between....................

a) Data link

b) Packet

c) Tunnelling

d) Hopping

e) None of these

Ans c)

31. In which of the following categories falls Round robin scheduling algorithm?

a) Preemptive scheduling

b) Non-preemptive scheduling

c) Sometime preemptive sometime non- preemptive.

d) All of the above


Ans a)

32. Wasting of memories within a partition, due to a difference in size of a partition and of the object resident within it, is

called------------

a) External fragmentation

b) Internal fragmentation

c) Compaction

d) Coalescing

e) None of these

Ans b)

33. In digital signature the private key is used for ................. and the public key for ............... .

a) Encryption, decryption

b) Decryption, encryption

c) Plaintext, ciphertext

d) Cipertest, Plaintext




Head Office


Phone: 65252855, 56



Ans a)

34. ................... hold actual data in the database?

a) Schemes

b) Triggers

c) Reports

d) Tables


Ans d)

35. In queues, the items deleted at one end is called?

a) Rear

b) Front

c) Top

d) Base


Ans b)

36. What is the name given to the database management system which is able handle full text data, image data, audio and

video?

a) Full media

b) Graphics

c) Multimedia

d) Hypertext


Ans c)

37. Tranmission of computerised data form one location to another is called.........

a) Data flow

b) Data transfer

c) Data communication

d) Data management



Head Office


Phone: 65252855, 56




Ans c)

38. What is the name of operating system that reads and reacts in terms of actual time?

a) Time sharing system

b) Quick response system

c) Real time system

d) Batch system


Ans c)

39. Spooling is most benefited in a multiprogramming environment where

a) There is limited primary memory and need for secondary memory

b) Most jobs are I/O bound

c) Jobs are evenly divided as I/O bound and CPU- bound

d) Most jobs are cpu-bound

e) None of these

Ans c)

40. Which of the following commands is used to update access and modification time of a file?

a) Touch

b) Wc

c) Grep

d) Cat


Ans a)

41. You need to configure a switch from a remote subnet. Which of the following must be configured on the switch?

a) Console port

b) IP

c) Hostname

d) SNMP



Head Office


Phone: 65252855, 56



e) Default gateway

Ans e)

42 which of the following is easiest software development process model?

a) Water fall model

b) Prototyping

c) Interative enhancement

d) Spiral model


Ans a)

43. To avoid race condition, the maximum number of processes that may be simultaneously inside the critical section is

a) Zero

b) One

c) Two

d) More than two


Ans b)

44. The extent to which the software can continue to operate correctly despite the introduction of invalid input is called as

a) Reliability

b ) Robustness

c) Fault tolerance

d) Portability


Ans b)

45. When more than one attributes of a table are related with many attributes of one or more other tables, then such a

relationship is known as

a) One-to-one

b) Many-to-many

c) Many-to-one



Head Office


Phone: 65252855, 56



d) One-to-many


Ans b)

46. Which of the following is hierarchical database implementation?

a) Table

b) Array

c) List

d) Tree


Ans d)

47. Which of the following action can be performed from Drop table in Database?

a) To delete the records from a table

b) To delete a table with record

c) To delete a particular column from the table

d) To delete a blank table from the database


Ans d)

48. When a sub class is inherited from a super class, which itself inherited from a super class, then such inheritance is

known as

a) Single inheritance

b) Multiple inheritance

c) Hierarchical inheritance

d) Multilevel inheritance


Ans d)

49. The first AI programming language was called?

a) BASIC

b) FORTRAN



Head Office


Phone: 65252855, 56



c) IPL

d) LISP


Ans c)

50) Data security threats include

a) Hardware failure

b) Privacy invasion

c) Fraudulent manipulation of data

d) Software failure

e) All of the above

Ans b)

so-it model question 02(2013)

Documents