Java Programming Mock Test 15

Consider the following statements var count = 0; while (count 10) { console.log(count); count++; }

1 Mark(s)

Your Answer:

The values of count is logged or stored in a particular location or storage
The value of count from 0 to 9 is displayed in the console
An error is displayed An error is displayed
An exception is thrown An exception is thrown

Which key uniquely identifies each record in a table

1 Mark(s)

Your Answer:

Foreign key Foreign key
Composite key Composite key
Alternate key Alternate key
Primary key Primary key

Which method is used to find the symmetric difference between two sets?

1 Mark(s)

Your Answer:

symmetric_difference() symmetric_difference()
diff() diff()
difference() difference()
symdiff() symdiff()

In Global Service for Mobile (GSM), each band is 25 MHz in width, shifted toward:

1 Mark(s)

Your Answer:

400 MHz 400 MHz
650 MHz 650 MHz
750 MHz 750 MHz
900 MHz 900 MHz

Cloud Computing provides resources over:

1 Mark(s)

Your Answer:

Internet Internet
LAN LAN
Bluetooth Bluetooth
USB USB

Which of the following statements are false?

1 Mark(s)

Your Answer:

bool can have two values and can be used to express logical expressions
bool cannot be used as the type of the result of the function
bool can be converted into integers implicitly
a bool value can be used in arithmetic expressions

Glass has a young modulus of:

1 Mark(s)

Your Answer:

65x109 N/m2 65x109 N/m2
70x109 N/m2 70x109 N/m2
200x109 N/m2 200x109 N/m2
30x109 N/m2 30x109 N/m2

Which of the following property refers to the root element of the document?

1 Mark(s)

Your Answer:

documentElement documentElement
elementdocument elementdocument
rootdocument rootdocument
none of the mentioned none of the mentioned

Which of the following is the key measure to reduce the number of diarrhea cases?

1 Mark(s)

Your Answer:

Improved sanitation Improved sanitation
Food hygiene Food hygiene
Safe drinking water Safe drinking water
All of the above All of the above

What is the purpose of the 'catch' block in exception handling in C++?

1 Mark(s)

Your Answer:

To throw exceptions To throw exceptions
To define the block of code that may generate exceptions
To catch and handle exceptions To catch and handle exceptions
To handle errors during compile time To handle errors during compile time

Information kept about a file includes

1 Mark(s)

Your Answer:

print setting print setting
deletion data deletion data
Both A and B Both A and B
size size

Which tab displays the content of slides in normal view?

1 Mark(s)

Your Answer:

View View
Layout Layout
Outline Outline
None of these None of these

In an E-R diagram, the relationship sets are represented through the symbol:

1 Mark(s)

Your Answer:

Undivided rectangle Undivided rectangle
Diamond Diamond
Rectangles divided into two parts Rectangles divided into two parts
Triangle Triangle

The stomach can hold:

1 Mark(s)

Your Answer:

1 liter food 1 liter food
2 liters food 2 liters food
1.5 liters food 1.5 liters food
2.5 liters 2.5 liters

How do you create a new directory in Ruby?

1 Mark(s)

Your Answer:

Using Dir.create method Using Dir.create method
Using Dir.new method Using Dir.new method
Using Dir.make method Using Dir.make method
Using Dir.mkdir method Using Dir.mkdir method

Which of the given element improve the performance of AI agent so that it can make better decisions?

1 Mark(s)

Your Answer:

Changing Element Changing Element
Performance Element Performance Element
Learning Element Learning Element
None of the above None of the above

In ∂/∂x(cxn-1), derivative will be:

1 Mark(s)

Your Answer:

ncxn ncxn
ncxn-1 ncxn-1
cxn cxn
xcn-1 xcn-1

Where are standard exception classes grouped?

1 Mark(s)

Your Answer:

namespace std namespace std
error error
catch catch
final final

Which C++ feature allows a function to call itself?

1 Mark(s)

Your Answer:

Polymorphism Polymorphism
Inheritance Inheritance
Iteration Iteration
Recursion Recursion

What does the usedJsHeapSize property indicate?

1 Mark(s)

Your Answer:

Amount of memory used Amount of memory used
Amount of memory unused Amount of memory unused
Amount of memory used & unused Amount of memory used & unused
None of the mentioned None of the mentioned

The declaration of the structure is also called as?

1 Mark(s)

Your Answer:

structure creator structure creator
structure signifier structure signifier
structure specifier structure specifier
structure creator & signifier structure creator & signifier

What is the pickling?

1 Mark(s)

Your Answer:

It is used for object serialization It is used for object serialization
It is used for object deserialization It is used for object deserialization
None of the mentioned None of the mentioned
All of the mentioned All of the mentioned

Which switch is a multistage switch with micro switches at each stage that route the packets based on the output port represented as a binary string?

1 Mark(s)

Your Answer:

Banyan switch Banyan switch
Crossbar switch Crossbar switch
Multistage crossbar Multistage crossbar
Packet switch Packet switch

Multivalued dependencies should ________ be eliminated.

1 Mark(s)

Your Answer:

always always
commonly commonly
seldom seldom
never never

Which command is DDL?

1 Mark(s)

Your Answer:

CREATE CREATE
SELECT SELECT
INSERT INSERT
UPDATE UPDATE

An ellipse longest diameter is:

1 Mark(s)

Your Answer:

major axis major axis
minor axis minor axis
semimajor axis semimajor axis
semiminor axis semiminor axis

Just like the SQL update privilege, the privilege that is granted on specific attributes, is:

1 Mark(s)

Your Answer:

Insert privilege Insert privilege
References privilege References privilege
Execute privilege Execute privilege
Select privilege Select privilege

To go to the beginning of a text line press__________________?

1 Mark(s)

Your Answer:

Home Home
Page up Page up
Enter Enter
None of these None of these

Which data structure is most suitable for implementing an undo feature in an application?

1 Mark(s)

Your Answer:

Queue Queue
Linked List Linked List
Hash Table Hash Table
Stack Stack

Which is the Text Styling feature in MS-Word?

1 Mark(s)

Your Answer:

Word style Word style
Word design Word design
Word art Word art
Design Design

The split size is normally the size of a . . . . . . . . block, which is appropriate for most applications.

1 Mark(s)

Your Answer:

Generic Generic
Task Task
Library Library
HDFS HDFS

In Computer, which shortcut key is used to refresh the current program window?

1 Mark(s)

Your Answer:

F2 F2
F5 F5
Ctrl+D Ctrl+D
Ctrl+A Answer Ctrl+A Answer

What is the purpose of Hadoop's Ranger KMS (Key Management Service) in a Hadoop security setup?

1 Mark(s)

Your Answer:

Managing and securing encryption keys Managing and securing encryption keys
Enabling speculative execution in MapReduce
Increasing the replication factor of HDFS blocks
Disabling block-level access control Disabling block-level access control

Which of the following is used in hash tables to determine the index of any input record?

1 Mark(s)

Your Answer:

hash function hash function
hash linked list hash linked list
hash tree hash tree
hash chaining hash chaining

Which among the given options is the right explanation for the statement size_t strcspn(c, s)?

1 Mark(s)

Your Answer:

return length of prefix of s consisting of characters not in c
return length of prefix of s consisting of characters present in c
return length of prefix of c consisting of characters not in s
return length of prefix of c consisting of characters present in s

In Java, which classes are used for autoboxing and unboxing operations?

1 Mark(s)

Your Answer:

Exception classes (e.g., `RuntimeException`)
Wrapper classes (e.g., `Integer`, `Double`)
Collection classes (e.g., `ArrayList`, `HashMap`)
None of These None of These

Which of the following calls the function using pointer?

1 Mark(s)

Your Answer:

p(5,10); p(5,10);
(*p)(5,10); (*p)(5,10);
Both A and B Both A and B
None None

The SQL operations union, intersect, and except operate on:

1 Mark(s)

Your Answer:

Attributes only Attributes only
Tuples only Tuples only
Relations Relations
Specific data set Specific data set

Which of the following operating systems does not support more than one program at a time?

1 Mark(s)

Your Answer:

Linux Linux
Windows Windows
MAC MAC
DOS DOS

Which shortcut key is used to restart the computer?

1 Mark(s)

Your Answer:

Ctrl + F4 Ctrl + F4
Ctrl + Alt + Delete Ctrl + Alt + Delete
Alt + F6 Alt + F6
None of above None of above

Which of the following property is used to define whether an element should be resized and, if so, upon what axis?

1 Mark(s)

Your Answer:

axis axis
resize resize
set-origin set-origin
set-axis set-axis

You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?

1 Mark(s)

Your Answer:

The router is not configured for the new host.
The VTP configuration on the switch is not updated for the new host.
The host has an invalid MAC address. The host has an invalid MAC address.
The switch port the host is connected to is not configured to the correct VLAN membership.

Which of the following is default prompt for UNIX environment?

1 Mark(s)

Your Answer:

> >
>> >>
< <
<< <<

Which is an example of WAN?

1 Mark(s)

Your Answer:

Share it Share it
Mobile broadband connections Mobile broadband connections
Bluetooth Bluetooth
VPN VPN

How are the constants declared?

1 Mark(s)

Your Answer:

const keyword const keyword
#define preprocessor #define preprocessor
both const keyword and #define preprocessor
$define $define

Which of the following is not included in document management system?

1 Mark(s)

Your Answer:

word processing word processing
desktop publishing desktop publishing
reprographic reprographic
e-shopping e-shopping

If abcdefg is the input, the output will be

1 Mark(s)

Your Answer:

abcd abcd
abc abc
efg efg
Garbage Garbage

OLE DB has two types of data providers: tabular data providers and service providers.

1 Mark(s)

Your Answer:

True True
False False

Laplace transform of function f(t)=eatcos(wt) is:

1 Mark(s)

Your Answer:

(s-a)/(s-a)+w (s-a)/(s-a)+w
(s-a)/((s-a)2+w) (s-a)/((s-a)2+w)
(s-a)/((s-a)2+w2) (s-a)/((s-a)2+w2)
s/((s-a)2+w2) s/((s-a)2+w2)

How is a reference variable declared in C++?

1 Mark(s)

Your Answer:

int *ref int *ref
int &ref int &ref
int ref& int ref&
ref int ref int

Advanced Mobile Phone Service (AMPS) uses Frequency Division Multiplexing (FDMA) to divide each 25-MHz into:

1 Mark(s)

Your Answer:

3D-kHz 3D-kHz
2D-kHz 2D-kHz
4D-kHz 4D-kHz
5D-kHz 5D-kHz

Which command is used with vi editor to save file and remain in the editing mode ?

1 Mark(s)

Your Answer:

:q :q
:w :w
q! q!
? ?

To enter the blood vessels, large molecules are:

1 Mark(s)

Your Answer:

burned burned
digested digested
ingested ingested
absorbed absorbed

What is the main advantage of using encapsulation in Ruby?

1 Mark(s)

Your Answer:

It exposes the internal state of an object and allows unrestricted access
It allows for multiple classes to inherit from each other
It hides the internal state of an object and restricts access to it
It allows for objects of different classes to be treated as objects of a common superclass

If n is the length of text(T) and m is the length of the pattern(P) identify the correct pre-processing algorithm. (where q is a suitable modulus to reduce the complexity) p=0; t0=0;

1 Mark(s)

Your Answer:

for i=1 to n do t0=(dt0 + P[i])mod q p=(dp+T[i])mod q
for i=1 to n do p=(dp + P[i])mod q t0=(dt0+T[i])mod q
for i=1 to m do t0=(dp + P[i])mod q p=(dt0+T[i])mod q
for i=1 to m do p=(dp + P[i])mod q t0=(dt0+T[i])mod q

What is the return type of lambda expression?

1 Mark(s)

Your Answer:

String String
Object Object
void void
Function Function

Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

1 Mark(s)

Your Answer:

True True
False False

In Hadoop, what is the purpose of the Hadoop NLineInputFormat?

1 Mark(s)

Your Answer:

Process data in compressed formats Process data in compressed formats
Read and parse text-based input data Read and parse text-based input data
Sort and shuffle data Sort and shuffle data
Aggregate values on the reducer side Aggregate values on the reducer side

What happens if you forget to update the next pointer of a node when deleting it in a singly linked list?

1 Mark(s)

Your Answer:

The node remains in the list The node remains in the list
The list becomes circular The list becomes circular
The next node's data is lost The next node's data is lost
The list becomes corrupted The list becomes corrupted

In which Tab “Ruler” is available?

1 Mark(s)

Your Answer:

Home Tab Home Tab
Insert Tab Insert Tab
Review Tab Review Tab
View Tab View Tab

In Apache NiFi, what does the term "processor" refer to?

1 Mark(s)

Your Answer:

Perform data analytics in Hadoop Perform data analytics in Hadoop
Manage computation resources Manage computation resources
Execute MapReduce jobs Execute MapReduce jobs
A fundamental building block for data flows

What is the priority of the thread in the following Java Program? class multithreaded_programing { public static void main(String args[]) { Thread t = Thread.currentThread(); System.out.println(t); } }

1 Mark(s)

Your Answer:

4 4
5 5
0 0
1 1

Which one of the following is the correct way of declaring a namespace?

1 Mark(s)

Your Answer:

namespace my; namespace my;
namespace my(); namespace my();
my namespace; my namespace;
namespace(my); namespace(my);

What is the output when we execute list("hello")?

1 Mark(s)

Your Answer:

['h', 'e', 'l', 'l', 'o'] ['h', 'e', 'l', 'l', 'o']
['hello'] ['hello']
['llo'] ['llo']
['olleh'] ['olleh']

Keys made up of two or more attributes are called composite keys.

1 Mark(s)

Your Answer:

True True
False False

Solar energy is harnessed using:

1 Mark(s)

Your Answer:

A) solar cells A) solar cells
B) turbines B) turbines
C) dams C) dams
D) geothermal wells. D) geothermal wells.

The fastest read/write time and most efficient data storage of any disk array type is:

1 Mark(s)

Your Answer:

RAID-0 RAID-0
RAID-1 RAID-1
RAID-2 RAID-2
RAID-3 RAID-3

In Flume, what is the purpose of a Flume Channel?

1 Mark(s)

Your Answer:

Store intermediate data Store intermediate data
Collect and transport data Collect and transport data
Execute MapReduce jobs Execute MapReduce jobs
None of the above None of the above

Single cotton fibre being as thick as thumb would be:

1 Mark(s)

Your Answer:

100 m long 100 m long
1000 m long 1000 m long
10 m long 10 m long
1 m long 1 m long

Which of the following is a more compact binary format?

1 Mark(s)

Your Answer:

TCompactProtocol TCompactProtocol
TDenseProtocol TDenseProtocol
TBinaryProtocol TBinaryProtocol
TSimpleJSONProtocol TSimpleJSONProtocol

The main system board of a computer is called the _______________________?

1 Mark(s)

Your Answer:

integrated circuit integrated circuit
mother board mother board
processor processor
microchip microchip

The HDFS client software implements . . . . . . . . checking on the contents of HDFS files.

1 Mark(s)

Your Answer:

metastore metastore
parity parity
checksum checksum
none of the mentioned none of the mentioned

Which of below is not a dependency management tool?

1 Mark(s)

Your Answer:

Ant Ant
Maven Maven
Gradle Gradle
Jenkins Jenkins

What is the limit of a PHP integer value?

1 Mark(s)

Your Answer:

16384 16384
65536 65536
1048576 1048576
2147483647 2147483647

The object of ________________within an OO system is to design tests that have a high likelihood of uncovering plausible bugs ?

1 Mark(s)

Your Answer:

Fault-based testing Fault-based testing
Integration testing Integration testing
Use-based testing Use-based testing
Scenario-based testing Scenario-based testing

What is a Microsoft PowerPoint?

1 Mark(s)

Your Answer:

Spreadsheet Program Spreadsheet Program
Presentation Program Presentation Program
Database Program Database Program
All of the above All of the above

On a simplex data link, which of the following is a possible error recovery technique?

1 Mark(s)

Your Answer:

Backward error correction (BEC) Backward error correction (BEC)
The use of hamming codes The use of hamming codes
Automatic Repeat Request (ARQ) Automatic Repeat Request (ARQ)
Downward error correction (DEC) Downward error correction (DEC)

Evaluating Your Answers

Java Programming Mock Test 15 : Question 1 of 77