Kotlin Mock Test 3 - Online MCQ Exam

How many types of Machine Learning are there?

1 Mark(s)

Your Answer:

1 1
2 2
3 3
4 4

What will be the output of the following PHP code ? <?php function TV($string) { echo "my favourite TV show is ".$string; function b() { echo " I am here to spoil this code"; } } function b() { echo " I am here to spoil this code"; } b(); TV("Sherlock"); ?>

1 Mark(s)

Your Answer:

I am here to spoil this code I am here to spoil this code
Error Error
My favourite TV show isI am here to spoil this code
None of the mentioned None of the mentioned

What is the correct syntax to declare a method named Add that takes two integer parameters and returns their sum in C#?

1 Mark(s)

Your Answer:

Add(int num1, int num2) Add(int num1, int num2)
int Add(num1, num2) int Add(num1, num2)
Add(num1, num2) Add(num1, num2)
int Add(int num1, int num2) int Add(int num1, int num2)

Choose the filemode method which is used to create a new output file with the condition that the file with same name must not exist.

1 Mark(s)

Your Answer:

FileMode.CreateNew FileMode.CreateNew
FileMode.Create FileMode.Create
FileMode.OpenOrCreate FileMode.OpenOrCreate
FileMode.Truncate FileMode.Truncate

A greenhouse gas that absorbs energy and maintains the earth's temperature is:

1 Mark(s)

Your Answer:

carbon dioxide carbon dioxide
oxygen oxygen
nitrogen nitrogen
argon argon

How many edges are present in path cluster?

1 Mark(s)

Your Answer:

2 2
3 3
6 6
1 1

Which of the following represents the correct explicit call to a constructor of class A? class A{ int a; public: A(int i) { a = i; } }

1 Mark(s)

Your Answer:

A a(5); A a(5);
A a; A a;
A a = A(5); A a = A(5);
A a = A(); A a = A();

Which of the following specifies the expiry time for cached location information?

1 Mark(s)

Your Answer:

maximumAge maximumAge
timeout timeout
enableHighAccuracy enableHighAccuracy
position_unavailable position_unavailable

Why do we prefer Red Black tree over AVL tree?

1 Mark(s)

Your Answer:

Red Black trees are not strictly balanced
Red black tree requires lesser rotations than AVL tree.
AVL tree needs more space to store the balance factor.
Both b and c Both b and c

Assertion (A): Sexual reproduction leads to variation in offspring. Reason (R): Gametes from two parents combine to form a zygote with mixed genetic material. Codes:

1 Mark(s)

Your Answer:

A) Both (A) and (R) are true, and (R) is the correct explanation of (A).
B) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
C) (A) is true, but (R) is false. C) (A) is true, but (R) is false.
D) (A) is false, but (R) is true. (A) and (R) are true, and (R) is the correct explanation of (A). Our Home: Earth, A Unique Life Sustaining Planet Class 8 Fill in the blanks

Why are local variable names beginning with an underscore discouraged?

1 Mark(s)

Your Answer:

they are used to indicate a private variables of a class
they confuse the interpreter they confuse the interpreter
they are used to indicate global variables
they slow down execution they slow down execution

Which of the following statements about destructors in C++ is true?

1 Mark(s)

Your Answer:

Destructors can be overloaded Destructors can be overloaded
Destructors can be inherited Destructors can be inherited
Destructors are called when an object is created
Destructors cannot have parameters Destructors cannot have parameters

Which function allocates memory dynamically in C?

1 Mark(s)

Your Answer:

malloc malloc
new new
create create
alloc alloc

Which of the following is not a appropriate value for font-variant property?

1 Mark(s)

Your Answer:

inherit inherit
default default
large-caps large-caps
small-caps small-caps

JavaScript code between a pair of “script” tags are called

1 Mark(s)

Your Answer:

Non-inline Non-inline
External External
Referenced Referenced
Inline Inline

What will be the output of the following R code? > x <- c(1, 2, NaN, NA, 4) > is.na(x)

1 Mark(s)

Your Answer:

FALSE FALSE TRUE TRUE FALSE FALSE FALSE TRUE TRUE FALSE
FALSE TRUE TRUE TRUE FALSE FALSE TRUE TRUE TRUE FALSE
TRUE FALSE TRUE TRUE FALSE TRUE FALSE TRUE TRUE FALSE
TRUE FALSE TRUE FALSE FALSE TRUE FALSE TRUE FALSE FALSE

Which header file is used for multi-threading in C++?

1 Mark(s)

Your Answer:

<mutex> <mutex>
<condition_variable> <condition_variable>
<thread> <thread>
<atomic> <atomic>

Which of the following is not an OOPS concept?

1 Mark(s)

Your Answer:

Encapsulation Encapsulation
Polymorphism Polymorphism
Exception Exception
Abstraction Abstraction

Name given to something that the computer can automatically use unless you tell it otherwise is:

1 Mark(s)

Your Answer:

a specification a specification
a wildcard a wildcard
a default a default
a rule a rule

Who is the father of Internet ?

1 Mark(s)

Your Answer:

Chares Babbage Chares Babbage
Vint Cerf Vint Cerf
Denis Riche Denis Riche
Martin Cooper Martin Cooper

What is the purpose of the Reverse operator in LINQ?

1 Mark(s)

Your Answer:

Sorts the elements of a sequence in ascending order based on a key
Filters a sequence based on a predicate Filters a sequence based on a predicate
Projects each element of a sequence Projects each element of a sequence
Reverses the order of the elements in a sequence

What will be the output of the following Python function? float(' -12345\n') (Note that the number of blank spaces before the number is 5)

1 Mark(s)

Your Answer:

-12345.0 (5 blank spaces before the number)
-12345.0 -12345.0
Error Error
-12345.000000000.... (infinite decimal places)

What will be the output of the following Python code? class Test: def __init__(self): self.x = 0 class Derived_Test(Test): def __init__(self): Test.__init__(self) self.y = 1 def main(): b = Derived_Test() print(b.x,b.y) main()

1 Mark(s)

Your Answer:

Error because class B inherits A but variable x isn't inherited
0 0 0 0
0 1 0 1
Error, the syntax of the invoking method is wrong

Which keyword is used to exit a loop in Java?

1 Mark(s)

Your Answer:

continue continue
return return
exit exit
break break

In R, what is the role of the RcppArmadillo package?

1 Mark(s)

Your Answer:

Integration of R with C++ for linear algebra operations
Bayesian data analysis Bayesian data analysis
Efficiently reading and writing data frames
Creating interactive and animated plots for time series data

Which class is used to read data from the keyboard in Java?

1 Mark(s)

Your Answer:

Scanner Scanner
FileReader FileReader
BufferedReader BufferedReader
InputStream InputStream

Bluetooth standard is:

1 Mark(s)

Your Answer:

802.15.1 802.15.1
802.11 802.11
802.16 802.16
802.3 802.3

What is the phase when the entire face of the Moon is visible from Earth?

1 Mark(s)

Your Answer:

A) First Quarter A) First Quarter
B) New Moon B) New Moon
C) Full Moon C) Full Moon
D) Waning Crescent (A) and Reason (R). Read them carefully and choose the correct option.

What will be the output of the following Python code snippet? x = 'abcd' for i in range(len(x)): x[i].upper() print (x)

1 Mark(s)

Your Answer:

abcd abcd
ABCD ABCD
error error
none of the mentioned none of the mentioned

Which of the following real time examples is based on insertion sort?

1 Mark(s)

Your Answer:

arranging a pack of playing cards arranging a pack of playing cards
database scenarios and distributes scenarios
arranging books on a library shelf arranging books on a library shelf
real-time systems real-time systems

Which of the following statements is true about multidimensional arrays in C++?

1 Mark(s)

Your Answer:

They can only be 2D arrays They can only be 2D arrays
The size of each dimension must be known at compile time
They can store elements of different types
They are always dynamically allocated They are always dynamically allocated

Which one of the following is the correct way to increment the rear end in a circular queue?

1 Mark(s)

Your Answer:

rear =rear+1 rear =rear+1
(rear+1) % max (rear+1) % max
(rear % max) + 1 (rear % max) + 1
None of the above None of the above

What will be the output of the following C++ code? #include <iostream> #include <string> using namespace std; class A{ mutable int a; public: A(){ cout<<"A's Constructor called\n"; } ~A(){ cout<<"A's Destructor called\n"; } }; class B: public A{ public: B(){ cout<<"B's Constructor called\n"; } ~B(){ cout<<"B's Destructor called\n"; } }; int main(int argc, char const *argv[]) { B b1; }

1 Mark(s)

Your Answer:

A's Constructor called B's Constructor called
A's Destructor called B's Destructor called
A's Constructor called B's Constructor called B's Destructor called A's Destructor called
A's Constructor called B's Constructor called A's Destructor called B's Destructor called

The "Bulk loader" utilities allow data to be read from:

1 Mark(s)

Your Answer:

Rewritable text files Rewritable text files
Non-readable text files Non-readable text files
Formatted text files Formatted text files
Extracted text files Extracted text files

What is the default value of max_execution_time directive? This directive specifies how many seconds a script can execute before being terminated.

1 Mark(s)

Your Answer:

10 10
20 20
30 30
40 40

What is encapsulation in Ruby?

1 Mark(s)

Your Answer:

The inheritance of properties and behaviors
The bundling of data with the methods that operate on that data
The conversion of data types The conversion of data types
None of the above None of the above

. . . . . . . . is an RPC framework that defines a compact binary serialization format used to persist data structures for later analysis.

1 Mark(s)

Your Answer:

Pig Pig
Hive Hive
Thrift Thrift
None of the mentioned None of the mentioned

If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?

1 Mark(s)

Your Answer:

RouterA(config)#bandwidth 64 RouterA(config)#bandwidth 64
RouterA(config-if)#bandwidth 64000 RouterA(config-if)#bandwidth 64000
RouterA(config-if)#clock rate 64 RouterA(config-if)#clock rate 64
RouterA(config-if)#clock rate 64000 RouterA(config-if)#clock rate 64000

What will be the output of the following Python statement? >>>print(chr(ord('b')+1))

1 Mark(s)

Your Answer:

a a
b b
c c
A A

In modern operating systems, feature which has dramatically improved user productivity is:

1 Mark(s)

Your Answer:

command-line interface command-line interface
copy and paste copy and paste
multitasking multitasking
intrusion detection intrusion detection

For the substitution of all, SQL uses the decode function, which conceptually is:

1 Mark(s)

Your Answer:

Simple Simple
Small Small
Complex Complex
Large Large

Context switching is:

1 Mark(s)

Your Answer:

Saving/Loading process state Saving/Loading process state
Switching memory Switching memory
Switching power Switching power
Switching user Switching user

Which modifier is used to perform global matching in Ruby regular expressions?

1 Mark(s)

Your Answer:

x x
g g
o o
None of the above None of the above

Which is the predefined package ?

1 Mark(s)

Your Answer:

Lang package Lang package
util package util package
io package io package
All of above All of above

Which Java data type is used to store a single 16-bit Unicode character?

1 Mark(s)

Your Answer:

int int
char char
short short
None of These None of These

Ultimate strength of Douglas fir wood is:

1 Mark(s)

Your Answer:

110x106 N/m2 110x106 N/m2
10x106 N/m2 10x106 N/m2
40x106 N/m2 40x106 N/m2
50x106 N/m2 50x106 N/m2

Which of the following is true about a header file…

1 Mark(s)

Your Answer:

Definitions of various constants Definitions of various constants
Definitions of various data types Definitions of various data types
Prototypes of standard library functions
All of the above All of the above

Evaluating Your Answers

Kotlin Mock Test 3 : Question 1 of 47