com whiz

1.

1 point

The primary key is selected from the:

foreign keys

candidate keys.

determinants.

composite keys.

2.

1 point

A race condition occurs when

two users of the DBMS are interacting with different files at two users of the DBMS are interacting with different files at the same time

both (a) and (b)

None of these

two concurrent activities interact to cause a processing error

3.

1 point

3) Virtual Circuit Networks are normally implemented in:

Data Link Layer

Network Layer

Physical Layer

Session Layer

4.

1 point

You can read input that consists of multiple lines of text using

the normal cout << combination

the cin.get( ) function with two arguments

the cin.get( ) function with one argument

the cin.get( ) function with three arguments.

5.

1 point

The scheduling in which CPU is allocated to the process with least CPU-burst time is called

Round Robin Scheduling

Priority Scheduling

Shortest job first Scheduling

Multilevel Queue Scheduling

6.

1 point

A scheduler which selects processes from secondary storage device is called

Short term scheduler.

Process scheduler.

Medium term scheduler

Long term scheduler.

7.

1 point

In context with Relational algebra, which of the following are unary operations
I SELECT
II PROJECT
III UNION
IV PRODUCT

I and II Only

All are binary operations

I and III Only

II Only

8.

1 point

Which of the following is true-
Î¦ = empty language â‚¬ = empty string

Î¦ = { â‚¬ }

â‚¬ is not defined.

Î¦ â€¡ { â‚¬ }

. Î¦ is not defined

9.

1 point

A program in execution is called

Function

Process

Instruction

Procedure

10.

1 point

Chomsky normal forms are not useful in-

elimination of aâ€šÂ¬ productions

elimination of unit productions . elimination of unit productions

elimination of useless symbols

elimination of transitive dependencies

11.

1 point

#include
int main()
{
printf("%%dd\n",12);
system("PAUSE");
}

12

None of these

PAUSE

%dd

12.

1 point

The term 'polling' in a computer means a process by which a computer system

decides correct alternative by analysing several ones

multiplexes the inputs and updates the memory accordingly

detects/corrects errors

inquires to see if a terminal has any transaction to send

13.

1 point

7) By default a real number is treated as a

D. far double

B. double

A. float

C. long double

14.

1 point

The â€œblocking factorâ€ of a file is

The number of logical records in one physical record

The number of blocks accessible to a file

None of the above

The number of blocks allocated to a file

15.

1 point

5)Protocol normally used in live streaming of video/audio:

B. UDP

A. TCP B. UDP C. SCTP D. None of these A. TCP B. UDP C. SCTP D. None of these A. TCP B. UDP C. SCTP D. None of these A. TCP

D. None of these

C. SCTP

16.

1 point

10) If a class C is derived from class B, which is derived from class A, all through public inheritance, then a class C member function can access

D. protected data in A and B. D. protected data in A and B.

A. protected and public data only in C and B

C. private data in A and B

B. protected and public data only in C.

17.

1 point

Nested Macro calls are expanded using the

LIFO (Last in First out)

. FIFO rule (First in first out)

FILO rule (First in last out)

None of the above

18.

1 point

4)The IP address 239.25.25.26 would belong to :

Class A

Class C

Class B

Class D

19.

1 point

The term â€˜page trafficâ€™ describes

the movement of pages in and out of memory.

number of pages of executing programs loaded in memory.

number of pages in memory at a given instant.

number of papers required to be brought in at a given page request

20.

1 point

9) The address of a variable temp of type float is

B. &temp

C. float& temp

D. float temp&

A. *temp

21.

1 point

An exception is caused by

a syntax error

a problem in the operating system

a run-time error

a hardware problem

22.

1 point

) Program â€˜preemptionâ€™ is

forced allotment of CPU by a program to itself.

forced de allocation of the CPU from a program which is executing on the CPU.

release of CPU by the program after completing its task

a program terminating itself due to detection of an error.

23.

1 point

Nested Macro calls are expanded using the

. FIFO rule (First in first out)

LIFO (Last in First out)

FILO rule (First in last out)

None of the above

24.

1 point

Memory utilization factor shall be computed as follows

memory in use/total memory connected

memory in use/allocated memory.

memory allocated/free existing memory

memory committed/total memory available.

25.

1 point

A relation is in this form if it is in BCNF and has no multivalued dependencies:

fourth normal form

second normal form.

domain/key normal form

third normal form

26.

1 point

Which amongst the following is valid syntax of the Fork and Join Primitive?

Fork

Fork Join

27.

1 point

) If we create a file by â€˜ifstreamâ€™, then the default mode of the file is _________

ios :: binary

ios :: out

ios :: app

ios :: in

28.

1 point

14)If x = 5, y = 2 then x ^ y equals________.
(where ^ is a bitwise XOR operator)

10000010

10100000

00000111

11001000

29.

1 point

11)If the variable count exceeds 100, a single statement that prints â€œToo manyâ€ is

A. if (count<100) cout << â€œToo manyâ€;

C. if (count>100) cout << â€œToo manyâ€;

D. None of these.

B. if (count>100) cout >> â€œToo manyâ€;

30.

1 point

6)Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

A. rem = 3.14 % 2.1;

D. Remainder cannot be obtain in floating point division. D. Remainder cannot be obtain in floating point division. D. Remainder cannot be obtain in floating point division. D. Remainder cannot be obtain in floating point division. D. Remainder cannot be obtain in floating point division.

C. rem = fmod(3.14, 2.1);

B. rem = modf(3.14, 2.1);

31.

1 point

8) What will the statement
char ch='A';
store in variable ch?

A. The character A

B. ascii value of character A

D. None of the above

C. A along with inverted commas

32.

1 point

Which of the following languages is regular-

the set of strings 0i1j such that GCD of i and j is equal to one.

0n10n

none of these

0n | n is a power of 2

33.

1 point

2) The http protocol uses the following port :

21

80

25

622

34.

1 point

12) Usually a pure virtual function

A. has complete function body

D. is defined only in derived class.

C. will be called only to delete an object.

B. will never be called.

35.

1 point

A network schema

stores data in tables

permits many-to-many relationship

None of the above

Restricts the structure to one-to-one relationship

36.

1 point

The break statement causes an exit

from the innermost loop only.

from all loops & switches.

from the innermost loop or switch.

only from the innermost switch

37.

1 point

Which of the following will produce a value 10 if x = 9.7?

ceil(x)

log(x)

floor(x)

abs(x)

38.

1 point

The set strings of 0's and 1's with atmost one pair consecutive one's-

(0+1)*(01)(10)*(0+1)*

(0+1)*(01)(10)(0+1)*

(0+!)(01)*(10)*(0+1)

(0+1)*(01)*(10)(0+1)*

39.

1 point

13) In C++, the range of signed integer type variable is ________

0 to 216

-215 to 215 -1

-27 to 27 -1

0 to 28

40.

1 point

Shell is the exclusive feature of

UNIX

System software

DOS

Application software

41.

1 point

which topology, if there are n devices in a network, each device has n-1 ports for cables?

Mesh

Star

Bus

Ring