NTRO Computer Science Previous Year Questions Paper
Computer Science Previous Year Questions for NTRO
NTRO Computer Science Previous Year Questions Paper
Q 1 In a relational schema , each tuple is divided into fields called ?
A. Relations
B. Domains
C. Queries
D. All of the above
answer - B
Q 2 which one is first phase of software development?
A. Requirement
B. Disign
C. Coding
D. Testing
answer - A
Q 3 The postfix equivalent of the prefix * + a b - c d is
a. ab+cd-*
b. ab + cd * -
c. ab + - cd *
d. ab cd + - *
answer - A
Q 4 Which of the following statement(s) is/are true for two-phase locking?
I. Lock acquisition is the second phase
II. Locks can be acquired at any time
III. Keys are acquired in the first phase
IV. all of the above
answer - iv all of the above
Q 5 The searching technique which there are no unnecessary comparisons is called
A) Binary searching
B) Sequential searching
C) Hashing
D) none of the above
answer - C
Q 6 The most commonly used standard data code to represent alphabetical, and punctuation characters is
A. ASCII
B. EBCDII
C. BCD
D. All of the above
answer - A
Q 7 Which of the following is not the member of class?
[A]. Static function
[B]. Friend function
[C]. Const function
[D]. Virtual function
answer - B, In a class, the private data can be accessed only by the public member function of that class. c++ provides a mechanism in which a non member can have access to the private member of a class. This is achieved by the non_member function "friend" to the class, whose private data can be accessed.
Q 8 What is the 2's complement of 0011 0101 1001 1100 number?
A. 1100 1010 1100 1011
B. 1100 1010 0110 0011
C. 1100 1010 0110 0100
D. 1100 1010 1111 1111
answer - C Just once compliment of this word and add one ...
Q 9 VOIP stands for___________?
A. Voice over IP
B. Video over IP
C. Viruses over IP
B. Video over IP
C. Viruses over IP
Q 10 during validation??
A . Process is checked
B. Product is checked
C. Developer's performance is evaluated
D . None
answer - B
Q 11 when you use "ln -s" command which of the following occurs
A a file is created that points to an existing file
B a file is created that is copy of an existing file
C a file is moved from one location to another location
D none
answer - A
Q 12 Inter process communication is
A is never necessary
B allows process to synchronize
C is required for all process
D is usually done via disk drives
answer - B
Q 13. In cryptography, what is cipher?
a) algorithm for performing encryption and decryption
b) encrypted message
c) both algorithm for performing encryption and decryption and encrypted message
d) none of the mentioned
answer - a
Q14
class string_class{public static void main(String args[])
{String obj = "hello";
String obj1 = "world";
String obj2 = "hello";
System.out.println(obj.equals(obj1) + " " + obj.equals(obj2));
}}
a) false false
b) true true
c) true false
d) false true
answer d , equals() is method of class String, it is used to check equality of two String objects, if they are equal, true is retuned else false.
Q 18 What is the correct value to return to the operating system upon the successful completion of a program?
A. 1
B. -1
C. 0
D. Program do no return a value.
Answer: C
Q 19. P - semiconductor means ?
A excess of electrons and semiconductor is neutral
B Shortage of electrons and semiconductor is neutral
c excess of electrons and semiconductor is negative
d Shortage of electrons and semiconductor is positive
Answer: https://simple.wikipedia.org/wiki/P-type_semiconductor
Q 20 .
Which of the following concepts of OOPS means exposing only necessary information to client?
| ||||||||||||
Answer: Option C ,
| ||||||||||||
Q 23. FDDI is
A ring network
B bus network
C star network
D none
Answer: Option A
Q 24 General purpose computers are those that can be adopted to countless uses simply by changing its
A. Output Device
B. Input Device
C. Program
D. Processor
Answer: Option C
Q 25 An important aspect in coding is.
(A). Readability.
(B). Productivity.
(C). To use as small a memory space possible.
(D). Brevity.
Answer: Option A
Q 26 which of the following is universal gate?
A nand
b ex-or
c not
d or
Answer: Option A
Q 27 Which of the following statement is correct?
| ||
|
Answer: Option A , Constructor having same class name that's why we are call the constructor at the time of object creation.
Object creation is:.
Classname refernce variable=new classname () ;.
In this constructor name n classname is also same that's why we are call the constructor at the time of object creation.
Q 28 Which of the following can't be done with client-side JavaScript?
| A) Sending a form's contents by email | B) Storing the form's contents to a database file on the server |
| C) Validating a form | D) None of the above |
Answer: B) Storing the form's contents to a database file on the server
A non profit organisation
B profit organisation
C community
D government organisation
Answer: Option A
Q 30 by default what is root?
A root file system
B home directory of root user
C the directory which contain all the directory of file system.
D none
Answer: Option B
Q 31 what is SJF algo?
A execute first the job that last entered in queue
B execute first the job that first entered in queue
C execute first the job that least processor needs .
D none
Answer: Option C
Q 31 acceptance testing is done by ?
A developer
B tester
C customer.
D all of the above
Answer: Option D
Q 32 the physical layer of network is
A. define the electric charactristics of signals passed between the computer and communication device
B. control error detection and correction
C. constructs packet of data
D. none
Answer: Option A
Q 33 Which command is used to print a file
a) print
b) ptr
c) lpr
d) none of the mentioned
Answer: Option C
Q 34 A good specification should be?
A. distinctly specific
B. unambiguous
C. all of these
D. functional
Answer = C
Explanation:A good specification should have all the qualities such as unambiguos, distinctly specific and functional.
Q 35 What will be the output of the following PHP code?
<?php$a = 5;
$b = 5;
echo ($a === $b);
?>
a) 5 === 5
b) Error
c) 1
d) False
Answer: Option C , === operator returns 1 if $a and $b are equivalent and $a and $b have the same type.b) Error
c) 1
d) False
Q 36. Functional testing is known as ?
A structural testing
B behavioral testing
C regression testing
D none of the above
Answer: Option C
Q 37 The main container for <TR>, <TD> and <TH> is.
1. <DATA>
2. <GROUP>
3. <TABLE>
4. all of the above
Answer: Option 3
Q 38 Software engineering primarily aims on
- Reliable software
- Cost effective software
- Reliable and cost effective software
- None of the above
Q 39 find which word has odd parity
a. 1001
b. 0101
c. 1111
d. 0111
Answer: Option D
Q 40 Which will legally declare, construct, and initialize an array?
A. int [] myList = {};
B. int [] myList = (5, 8, 2);
C. int myList [] [] = {4,9,7,0};
D. int myList [] = {4, 3, 7};
Answer: Option D
Q 41 The most appropriate matching for the following pairs
X: Indirect addressing 1 : Loops Y: Immediate addressing 2 : Pointers Z: Auto decrement addressing 3: Constants
is
(A) X-3, Y-2, Z-1
(A) X-3, Y-2, Z-1
(B) X-I, Y-3, Z-2
(C) X-2, Y-3, Z-1
(D) X-3, Y-l, Z-2
Answer: (C)
(C) X-2, Y-3, Z-1
(D) X-3, Y-l, Z-2
Answer: (C)
Q 42 which is the fastest data transfer mechanisam ?
a. programmed I/O
b. interrupt I/O
c. DMA
d. none
Answer: (C)
Q 43 unix operating system is
a. multiuser
b. multitasking
c. can run on pc and larger system
d. all of the above
Answer: (D)
(A) 8
(B) 32
(C) 64
(D) 128
Answer: (C)
Explanation: We need 256 Kbytes, i.e., 256 x 1024 x 8 bits.
We have RAM chips of capacity 32 Kbits = 32 x 1024 bits.
(256 * 1024 * 8)/(32 * 1024) = 64
Q 45 WPA2 is used for security in
a) ethernet
b) bluetooth
c) wi-fi
d) none of the mentioned
a) ethernet
b) bluetooth
c) wi-fi
d) none of the mentioned
Q 46 data link layer is concerned with the
a. bit transmission function
b. packet transmission function
c. re- transmission delay
d. encryption of data
Answer: (A)
Q 47 In a microprocessor ,the address of the next instruction to be executed is stored on
a. stack pointer
b. address latch
c. program counter
d. general purpose register
Answer: (c)
Q 48 Which of these keywords is used to refer to member of base class from a sub class?
a.upper
b.this
c.super
d. none
c.super
d. none
Answer: (c)
Q 49 which logic circuit gives high output when the inputs are same
a nand
b. ex-or
c. ex-nor
d.nor
Answer: (c)
Q 50. What number would be shown on the screen after the following statements of C are executed?
char ch;
int i;
ch = 'G';
i = ch-'A';
printf("%d", i);
A. 5
B. 6
C. 7
D. 8
Since the ASCII value of G is 71 and the garbage value if A is 65 and hence the difference is 6.
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