Ruby Mock Test 7 - Online MCQ Exam

If we implement heap as min-heap, deleting root node (value 1)from the heap. What would be the value of root node after second iteration if leaf node (value 100) is chosen to replace the root at start.

1 Mark(s)

Your Answer:

2 2
100 100
17 17
3 3

What does the utc method do for a Time object in Ruby?

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Your Answer:

Converts the Time object to the number of seconds since the Unix epoch
Returns the time zone of the Time object
Converts the Time object to the user's local time zone
Converts the Time object to Coordinated Universal Time (UTC)

What is the recommended way to handle sensitive information, such as API keys, in Ruby projects?

1 Mark(s)

Your Answer:

Store them in environment variables Store them in environment variables
Embed them directly in the code Embed them directly in the code
Include them in a separate configuration file
Store them in the source code as comments

Once the connection is set up, the program can send SQL commands to the database by using:

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Your Answer:

SQLExcelConn SQLExcelConn
SQLExcelDirect SQLExcelDirect
SQLDirect SQLDirect
SQlConnect SQlConnect

Segmentation and reassembly is the responsibility of:

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Your Answer:

7th layer 7th layer
6th layer 6th layer
5th layer 5th layer
4th layer 4th layer

The FTP functions are used to ....... files from file servers.

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Your Answer:

Open Open
Download Download
Close Close
Upload Upload
All of above All of above

All the outgoing packets go through Network Address Translation (NAT) router, which replaces the source address in the packet with:

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Your Answer:

destination address destination address
global NAT address global NAT address
local NAT address local NAT address
absolute NAT address absolute NAT address

The 4GT Model is a package of _________________?

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Your Answer:

CASE Tools CASE Tools
Software tools Software tools
Software Programs Software Programs
None of the mentioned None of the mentioned

Which of the following helps to reduce spelling error in the document?

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Your Answer:

Auto Format Auto Format
Auto Correct Auto Correct
Smart Tags Smart Tags
Auto Text Auto Text

The term "DFD" stands for?

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Your Answer:

Data file diagram Data file diagram
Data flow document Data flow document
Data flow diagram Data flow diagram
None of the above None of the above

The ports ranging from 1024 to 49,151 are called:

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Your Answer:

registered ports registered ports
well-known ports well-known ports
dynamic ports dynamic ports
data ports data ports

Excel displays the current cells address in the __________?

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Your Answer:

Formula bar Formula bar
Status bar Status bar
Name box Name box
Title bar Title bar

Which of the following occurs when a transaction rereads data and finds new rows that were inserted by a command transaction since the prior read?

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Your Answer:

Nonrepeatable read Nonrepeatable read
Phantom read Phantom read
Dirty read Dirty read
Consistent read Consistent read

What is the key disadvantage of linear search compared to binary search?

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Your Answer:

It requires additional memory. It requires additional memory.
It is not efficient for small arrays. It is not efficient for small arrays.
It has higher time complexity. It has higher time complexity.
It requires sorted data. It requires sorted data.

In which part of computer execution of instructions done?

1 Mark(s)

Your Answer:

Control Unit Control Unit
Main Memory Main Memory
ALU ALU
None of these None of these

Which of the following is true about this pointer?

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Your Answer:

It is passed as a hidden argument to all function calls
It is passed as a hidden argument to all static functions
None of the above None of the above

The natural home of an organism is known as:

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Your Answer:

house house
habitat habitat
place place
pond pond

Yarn from draft cylinders to wounding on tube cylinder passes through:

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Your Answer:

yarn guide yarn guide
traveler traveler
both a and b both a and b
conveyor conveyor

The losses occurring in the core of the transformer that produces sound and vibrations is known as:

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Your Answer:

Humming losses Humming losses
Hysteresis losses Hysteresis losses
Iron losses Iron losses
Copper losses Copper losses

Which of these is a superclass of all Adapter classes?

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Your Answer:

Applet Applet
ComponentEvent ComponentEvent
Event Event
InputEvent InputEvent

A charge particle moving with particular velocity perpendicular to a uniform magnetic field will travel:

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Your Answer:

linearly linearly
in circle in circle
elliptical elliptical
randomly randomly

The "F" in RFM analysis stands for ________ .

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Your Answer:

frequently frequently
freshness freshness
fast food fast food
fantasy fantasy

Which of the following is true about the finally clause in exception handling?

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Your Answer:

The code in the finally block always executes, regardless of whether an exception is raised or not
The finally block should always come before the try block
The finally block is optional The finally block is optional
The code in the finally block executes only if an exception is caught

. . . . . . . . is a simple xUnit framework that enables you to easily test your Pig scripts.

1 Mark(s)

Your Answer:

PigUnit PigUnit
PigXUnit PigXUnit
PigUnitX PigUnitX
All of the mentioned All of the mentioned

Who develop the idea for universal turing machines which become the basis for the first computer?

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Your Answer:

Bill gates Bill gates
Alan Turing Alan Turing
Babbage Babbage
None of these None of these

The bytes in the original datagram of Internet Protocol Version (IPv4) are numbered from:

1 Mark(s)

Your Answer:

0 to 2999 0 to 2999
0 to 3999 0 to 3999
0 to 4999 0 to 4999
0 to 5999 0 to 5999

What is the syntax for declaring a function that takes a variable number of arguments in C++?

1 Mark(s)

Your Answer:

returnType functionName(var_args...); returnType functionName(var_args...);
returnType functionName(var_args...); { body; }
returnType functionName(..., var_args); returnType functionName(..., var_args);
returnType functionName(...); returnType functionName(...);

In mulit-list organization

1 Mark(s)

Your Answer:

Records that have equivalent value for a given secondary index item are linked together to form a list.
Records are loaded in ordered sequence defined by collating sequence by content of the key
Records are directly accessed by record key field
None of the above None of the above

Independent data marts are often created because an organization focuses on a series of short-term business objectives.

1 Mark(s)

Your Answer:

True True
False False

Which of the following handles painting the content on to the screen?

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Your Answer:

Rendering engine Rendering engine
JavaScript Interpreter JavaScript Interpreter
UI Layer UI Layer
Network Layer Network Layer

Extension of a Word file is:

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Your Answer:

.txt .txt
.docx .docx
.xlsx .xlsx
.pdf .pdf

How do you pass arguments to a method in Ruby?

1 Mark(s)

Your Answer:

method_name(arg1, arg2) method_name(arg1, arg2)
method_name { arg1, arg2 } method_name { arg1, arg2 }
method_name.with(arg1, arg2) method_name.with(arg1, arg2)
method_name arg1 arg2 method_name arg1 arg2

Which namespace is commonly used for building Windows Forms Applications in C#?

1 Mark(s)

Your Answer:

System.IO System.IO
System.Data System.Data
System.Net System.Net
System.Windows.Forms System.Windows.Forms

A Boolean data type that can take values true, false, and unknown, was introduced in:

1 Mark(s)

Your Answer:

SQL:1998 SQL:1998
SQL:1998 SQL:1998
SQL:1999 SQL:1999
SQL:2000 SQL:2000

The name of the Page object?s property that determines if a Web page is being requested without data being submitted to server is called:

1 Mark(s)

Your Answer:

IsCallback IsCallback
IsReusable IsReusable
IsValid IsValid
IsPostBack IsPostBack

AI stands for:

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Your Answer:

Artificial Intelligence Artificial Intelligence
Automated Intelligence Automated Intelligence
Active Interface Active Interface
Applied Information Applied Information

Which library allows mathematical functions like pow() and sqrt()?

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Your Answer:

The Boolean operator which combines search terms so that each search result contains at least one of the terms, is:

1 Mark(s)

Your Answer:

and operator and operator
not operator not operator
or operator or operator
nor operator nor operator

Harvard architecture uses:

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Your Answer:

Unified memory Unified memory
Separate memory Separate memory
Unified bus Unified bus
No bus No bus

What will be the output of the following Python code? def sayHello(): print('Hello World!') sayHello() sayHello()

1 Mark(s)

Your Answer:

Hello World! Hello World! Hello World! Hello World!
'Hello World!' 'Hello World!' 'Hello World!' 'Hello World!'
Hello Hello Hello Hello
None of the mentioned None of the mentioned

What all gets printed when the following program is compiled and run. public class Test{ public static void main(String args[]){ int i, j=1; i = (j>1)?2:1; switch(i){ case 0: System.out.println(0); break; case 1: System.out.println(1); case 2: System.out.println(2); break; case 3: System.out.println(3); break; } } }

1 Mark(s)

Your Answer:

0 0
1 1
2 2
3 3
1 2 1 2

What is the maximum number of ways in which a boolean expression with n + 1 terms can be parenthesized, such that the output is true?

1 Mark(s)

Your Answer:

nth catalan number nth catalan number
n factorial n factorial
n cube n cube
n square n square

How can you prevent a module from executing code when imported?

1 Mark(s)

Your Answer:

By using the if __name__ == "__main__": construct
By using the noexec keyword By using the noexec keyword
By using the prevent_execute decorator By using the prevent_execute decorator
By using the not_executed function By using the not_executed function

When a copy constructor is called?

1 Mark(s)

Your Answer:

When an object of the class is returned by value
When an object of the class is passed by value to a function
When an object is constructed based on another object of the same class
All of the mentioned All of the mentioned

What will be the output after compiling and executing the following code? public class Test implements Runnable{ public static void main(String[] args) throws InterruptedException{ Thread a = new Thread(new Test()); a.start(); System.out.print("Begin"); a.join(); System.out.print("End"); } public void run(){ System.out.print("Run"); } }

1 Mark(s)

Your Answer:

Compilation fails. Compilation fails.
An exception is thrown at runtime. An exception is thrown at runtime.
"BeginRunEnd" is printed. "BeginRunEnd" is printed.
"BeginEndRun" is printed. "BeginEndRun" is printed.
"BeginEnd" is printed. "BeginEnd" is printed.

Computer data transmission mode in which data can travel in both directions simultaneously is called:

1 Mark(s)

Your Answer:

full duplex mode full duplex mode
half duplex mode half duplex mode
simplex mode simplex mode
duplex mode duplex mode

What is the function of CTRL+N in Microsoft Word?

1 Mark(s)

Your Answer:

Save Document Save Document
Open Document Open Document
New Document New Document
Close Document Close Document

What happens when this C++ program is compiled? #include <iostream> #include <string> #include <cstdlib> using namespace std; class A { int a; public: A(){} }; class B: public A { int b; public: B(){} }; void func() { B b; throw b; } int main() { try{ func(); } catch(A a){ cout<<"Caught A Class\n"; } catch(B b){ cout<<"Caught B Class\n"; } }

1 Mark(s)

Your Answer:

The program compiles successfully without any errors or warnings
Compile-time error occurs Compile-time error occurs
The program compiles successfully with warnings
The program gives both errors and warnings

If the programmers want the output to be a data frame or a vector, then . . . . . . . . function is used.

1 Mark(s)

Your Answer:

Lapply Lapply
Sapply Sapply
Vapply Vapply
Zapply Zapply

Which of the following property defines the number of columns in a multicolumn text flow?

1 Mark(s)

Your Answer:

columns columns
column-flow column-flow
column-number column-number
column-count column-count

The part of the eye that is a messenger of electro-chemical signals from eye to the brain is:

1 Mark(s)

Your Answer:

blood vessel blood vessel
optic nerve optic nerve
iris iris
cornea cornea

Consider the markup and answer the question that follow. Which HTML5 element can replace the "?" ?

1 Mark(s)

Your Answer:

<audio> <audio>
<video> <video>
<media> <media>
both <audio> & <video> both <audio> & <video>

What is the running time of Bellmann Ford Algorithm?

1 Mark(s)

Your Answer:

O(V) O(V)
O(V2) O(V2)
O(ElogV) O(ElogV)
O(VE) O(VE)

If a slit of width 'a' is illuminated by white light, then value of 'a' at which the first minimum for red light of wavelength 650 nm appears at θ=15°, is:

1 Mark(s)

Your Answer:

25 µm 25 µm
2.5 µm 2.5 µm
250 µm 250 µm
25 m 25 m

The fundamental oscillations occur at wavenumbers less than:

1 Mark(s)

Your Answer:

1000 1000
2000 2000
3000 3000
4000 4000

From melt or more concentrated solution, bulk crystallization of polymers lead to:

1 Mark(s)

Your Answer:

heavy structure heavy structure
spherulitic structure spherulitic structure
round structure round structure
strong structure strong structure

The number of cross point needed for 10 lines in a cross point switch which is full duplex in nature and there are no self connection is

1 Mark(s)

Your Answer:

100 100
45 45
50 50
90 90

Which of the following is a risk associated with using hypertext in web applications?

1 Mark(s)

Your Answer:

Loss of sense of locality and direction Loss of sense of locality and direction
Cognitive overload for users Cognitive overload for users
All of the mentioned All of the mentioned
None of the mentioned None of the mentioned

Storage device found inside the computer__________________?

1 Mark(s)

Your Answer:

CD ROM CD ROM
Zip disk Zip disk
Super disk Super disk
Hard disk Hard disk

What does the term "inheritance" refer to in Ruby?

1 Mark(s)

Your Answer:

A mechanism by which a class can create multiple instances of another class
A mechanism by which a class can hide implementation details from another class
A mechanism by which a class can inherit properties and behaviors from another class
A mechanism by which a class can override methods from another class

Ignite is a unified . . . . . . . . data fabric providing high-performance, distributed in-memory data management.

1 Mark(s)

Your Answer:

Column Column
In-Memory In-Memory
Row oriented Row oriented
All of the mentioned All of the mentioned

Which of the following selector in jQuery is used to select the elements with lesser index value than the value of its index parameter?

1 Mark(s)

Your Answer:

jQuery :lt() selector jQuery :lt() selector
jQuery :gt() selector jQuery :gt() selector
jQuery :lang() selector jQuery :lang() selector
jQuery :nth-child selector jQuery :nth-child selector

An element used as fuel, and will become the future overall fuel is known as:

1 Mark(s)

Your Answer:

hydrogen hydrogen
neon neon
phosphorus phosphorus
helium helium

Which of the following is NOT part of STL?

1 Mark(s)

Your Answer:

Container Container
Iterator Iterator
Algorithm Algorithm
Exception handling Exception handling

What is the size of the 'bool' data type in C++?

1 Mark(s)

Your Answer:

2 bytes 2 bytes
4 bytes 4 bytes
Compiler-dependent Compiler-dependent
1 byte 1 byte

In Hadoop, what does the term "InputSplit" represent?

1 Mark(s)

Your Answer:

Represents a chunk of input data Represents a chunk of input data
Sort and shuffle data Sort and shuffle data
Aggregate values on the reducer side Aggregate values on the reducer side
Convert data into a binary format Convert data into a binary format

Conversion of the digital signal to an analog signal is:

1 Mark(s)

Your Answer:

modulation modulation
demodulation demodulation
encapsulation encapsulation
bypass bypass

Oxidation is accompanied by:

1 Mark(s)

Your Answer:

volume volume
heat & light heat & light
light light
heat heat

What will be the output of the following C# code snippet? public class A { public int x; public int y; public void display() { Console.WriteLine(x + " " + y); } } class Program { static void Main(string[] args) { A obj1 = new A(); A obj2 = new A(); obj1.x = 1; obj1.y = 2; obj2 = obj1; obj1.display(); obj2.display(); } }

1 Mark(s)

Your Answer:

1 2 0 0 1 2 0 0
1 2 1 2 1 2 1 2
0 0 0 0 0 0 0 0
Run time exception Run time exception

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Ruby Mock Test 7 : Question 1 of 69