Kotlin Mock Test 5 - Online MCQ Exam

What is the function of the MapReduce "Combine" phase?

1 Mark(s)

Your Answer:

Aggregate values on the reducer side Aggregate values on the reducer side
Combine intermediate key-value pairs on the mapper side
Sort and shuffle data Sort and shuffle data
Distribute data to reducers Distribute data to reducers

Which feature of OOPS derives the class from another class?

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Your Answer:

Inheritance Inheritance
Data hiding Data hiding
Encapsulation Encapsulation
Polymorphism Polymorphism

What is Windows Explorer?

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Your Answer:

Personal Computer Personal Computer
Network Network
File Manager File Manager
Drive Drive
Web Browser Web Browser

How many tables may be included with a join?

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Your Answer:

One One
Two Two
Three Three
All of the above. All of the above.

. . . . . . . . uses regex groups instead of a splitting pattern or position.

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Your Answer:

spread() spread()
gather() gather()
separate() separate()
extract() extract()

The unit used for the representation of frequency is known as:

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Your Answer:

Seconds Seconds
KiloBytes KiloBytes
Hertz Hertz
Bytes Bytes

In HTML Audio/Video DOM, __________ sets or returns whether the audio/video should be loaded when the page loads.

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Your Answer:

preload preload
autoplay autoplay
buffered buffered
controller controller

Which of the following is the correct syntax to declare an ArrayList in Java?

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Your Answer:

ArrayList al = new ArrayList(); ArrayList al = new ArrayList();
ArrayList al = new ArrayList[]; ArrayList al = new ArrayList[];
ArrayList al() = new ArrayList(); ArrayList al() = new ArrayList();
ArrayList al[] = new ArrayList[]; ArrayList al[] = new ArrayList[];

Magnetic force can act from a:

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Your Answer:

distance distance
time time
place place
center center

Soluble solid cannot be separated from:

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Your Answer:

solution solution
mixture mixture
both a and b both a and b
heating heating

What is the time complexity of merging two sorted arrays?

1 Mark(s)

Your Answer:

O(n) O(n)
O(n log n) O(n log n)
O(n2) O(n2)
O(m + n) O(m + n)

What is used to validate complex string patterns like an e-mail address ?

1 Mark(s)

Your Answer:

Extended expressions Extended expressions
Irregular expressions Irregular expressions
Regular expressions Regular expressions
Basic expressions Basic expressions

_________ clicking on mouse selects the entire paragraph by default.

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Your Answer:

Alt + Single Alt + Single
Single Single
Double Double
Triple Triple

What will be the output of the following C++ code? #include <stdio.h> int main() { char a = '\012'; printf("%d", a); return 0; }

1 Mark(s)

Your Answer:

Compiler error Compiler error
12 12
10 10
Empty Empty

If integer needs two bytes of storage, then maximum value of an unsigned integer is

1 Mark(s)

Your Answer:

216 – 1 216 – 1
215 – 1 215 – 1
216 216
215 215
None of these None of these

What will be the output of the following Java code? class Output { public static void main(String args[]) { boolean a = true; boolean b = false; boolean c = a ^ b; System.out.println(!c); } }

1 Mark(s)

Your Answer:

0 0
1 1
false false
true true

Choose the statements which makes delegate in C#.NET different from a normal class?

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Your Answer:

Delegates in C#.NET is a base class for all delegates type
Delegates created in C#.NET are further not allowed to derive from the delegate types that are created
Only system and compilers can derive explicitly from the Delegate or MulticasteDelegate class
All of the mentioned All of the mentioned

Scalar subqueries are useful in SQL update statements, where they can be used in the:

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Your Answer:

Select clause Select clause
From clause From clause
Where clause Where clause
Set clause Set clause

In the LAN Emulation server (LES), the software is installed on the:

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Your Answer:

LES LES
LECS LECS
BUS BUS
LEC LEC

How is brainstorming different from JAD ? Brainstorming sessions ?

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Your Answer:

last for about 2-3 hours last for about 2-3 hours
last for about 2-3 days last for about 2-3 days
cover the technology used for the development
all of the mentioned all of the mentioned

The from clause by itself defines relations listed in the clause through a:

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Your Answer:

Set difference Set difference
Cartesian product Cartesian product
Union Union
Join Join

Which of the following options provides easy entering and editing data in tables of MS Access?

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Your Answer:

Reports Reports
Forms Forms
Queries Queries
None of these None of these

Which of the following is a type of computer modulation?

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Your Answer:

amplitude amplitude
frequency frequency
phase phase
all of these all of these

Valley breeze occurs during

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Your Answer:

A) night A) night
B) day B) day
C) winter C) winter
D) rainfall. D) rainfall.

What is the role of the glmnet package in R?

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Your Answer:

Regularized linear regression and classification
Data manipulation and transformation Data manipulation and transformation
Handling large datasets with parallel computing
Interactive data visualization and exploration

Which of the following selector matches all elements of a type?

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Your Answer:

The Type Selector The Type Selector
The Universal Selector The Universal Selector
The Descendant Selector The Descendant Selector
The Class Selector The Class Selector

Which technique is used to solve overlapping subproblems in Dynamic Programming?

1 Mark(s)

Your Answer:

Greedy Approach Greedy Approach
Sorting Sorting
Memoization Memoization
Binary Search Binary Search

Which is the correct syntax of IF statement in Excel? =IF (result if False, test, result if True)., =IF (test, result if True, result if False)., =IF (result if True, result if False, test)., None of these

1 Mark(s)

Your Answer:

=IF (result if False, test, result if True).
=IF (test, result if True, result if False).
=IF (result if True, result if False, test).
None of these None of these

Which class is used for setting perspective and scroll properties for the page?

1 Mark(s)

Your Answer:

.wrapper .wrapper
.section .section
.static .static
.parallax .parallax

Which of the following PHP function is commonly used when handling authentication via PHP? 1. header() 2. footer() 3. inset() 4. isset()

1 Mark(s)

Your Answer:

1 and 4 1 and 4
2 and 4 2 and 4
2 and 3 2 and 3
1 and 3 1 and 3

Which of the following is advantage of using JDBC connection pool?

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Your Answer:

Slow performance Slow performance
Using more memory Using more memory
Using less memory Using less memory
Better performance Better performance

In the OSI model, which layer is responsible for end-to-end communication?

1 Mark(s)

Your Answer:

Physical layer Physical layer
Data link layer Data link layer
Transport layer Transport layer
Application layer Application layer

Jobs of the computer system for execution are loaded into:

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Your Answer:

device device
registers registers
memory memory
Buses Buses

Which Java keyword is used to prevent a method or class from being overridden or extended?

1 Mark(s)

Your Answer:

private private
static static
final final
abstract abstract

How many hosts are attached to each of the local area networks at your site?

1 Mark(s)

Your Answer:

128 128
254 254
256 256
64 64
None of the above None of the above

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Kotlin Mock Test 5 : Question 1 of 35