Data Structures Mock Test 14

Consider the expression T | F ∧ T. In how many ways can the expression be parenthesized so that the output is F (false)?

1 Mark(s)

Your Answer:

0 0
1 1
2 2
3 3

Which of the following is a NoSQL database?

1 Mark(s)

Your Answer:

MySQL MySQL
PostgreSQL PostgreSQL
MongoDB MongoDB
Oracle Oracle

What is the method used to access instance variables in Ruby?

1 Mark(s)

Your Answer:

Using accessor methods Using accessor methods
Using instance methods Using instance methods
Using class methods Using class methods
Using global variables Using global variables

Which of the following is the correct depiction of optimization strategy?

1 Mark(s)

Your Answer:

Orange Hat Techniques Orange Hat Techniques
Grey Hat Techniques Grey Hat Techniques
Shady Hat Techniques Shady Hat Techniques
Blue Hat Techniques Blue Hat Techniques

Which one has the most potential for minification?

1 Mark(s)

Your Answer:

JavaScript JavaScript
CSS CSS
HTML HTML
PHP PHP

Peeling off the fibre to expose new external surface for replication gives:

1 Mark(s)

Your Answer:

replicate details replicate details
internal details internal details
minimal details minimal details
angle details angle details

Which of the following memory is volatile

1 Mark(s)

Your Answer:

RAM RAM
ROM ROM
EPROM EPROM
PROM PROM

What is Re-throwing an exception means in C++?

1 Mark(s)

Your Answer:

An exception that is thrown again as it is not handled by that catching block
An exception that is caught twice An exception that is caught twice
An exception that is not handled in one caught hence thrown again
All of the mentioned All of the mentioned

The types that "byte" can safely be converted to are:

1 Mark(s)

Your Answer:

ushort,short ushort,short
bool bool
float,decimal float,decimal
a and c a and c

When does WebPageTest become necessary?

1 Mark(s)

Your Answer:

To run any common website To run any common website
To run private websites To run private websites
To run QA testing To run QA testing
All of the mentioned All of the mentioned

Which of the following advanced OOP features is/are not supported by PHP? 1. Method overloading 2. Multiple Inheritance 3. Namespaces 4. Object Cloning

1 Mark(s)

Your Answer:

All of the mentioned All of the mentioned
None of the mentioned None of the mentioned
1 and 2 1 and 2
3 and 4 3 and 4

The paging system can be used for _______

1 Mark(s)

Your Answer:

Sending numeric messages Sending numeric messages
Audio Calls Audio Calls
Sending alphanumeric messages Sending alphanumeric messages
All of the above All of the above

What is the time complexity of extracting the minimum element from a min-heap?

1 Mark(s)

Your Answer:

O(1) O(1)
O(log n) O(log n)
O(n) O(n)
O(n log n) O(n log n)

NFA stands for:

1 Mark(s)

Your Answer:

Non-deterministic FA Non-deterministic FA
New Finite Automata New Finite Automata
Network Finite Access Network Finite Access
Node Finite Automata Node Finite Automata

In C++, can you declare a constructor as virtual?

1 Mark(s)

Your Answer:

Yes Yes
No No
Only if it has parameters Only if it has parameters
Only if it is a copy constructor Only if it is a copy constructor

What is the purpose of the "left rotation" operation in a Binary Search Tree (BST)?

1 Mark(s)

Your Answer:

To maintain balance and keep the tree balanced.
To move a node to the right subtree. To move a node to the right subtree.
To convert a BST into a binary heap. To convert a BST into a binary heap.
To find the maximum value node. To find the maximum value node.

In a regular expression, what does the metacharacter `b` represent?

1 Mark(s)

Your Answer:

A digit A digit
Any character Any character
Any special character Any special character
A word boundary A word boundary

Which of these methods of class are used to remove the leading and backward whitespaces?

1 Mark(s)

Your Answer:

startsWith() startsWith()
trim() trim()
Trim() Trim()
doTrim() doTrim()

Which is the method used to save chart as a ps file?

1 Mark(s)

Your Answer:

ps() ps()
postscript() postscript()
script() script()
post(script) post(script)

Which of the following statements is true about the C++ programming language?

1 Mark(s)

Your Answer:

C++ is an object-oriented programming language
C++ is a procedural programming language
C++ is a functional programming language
C++ is both procedural and object-oriented language

Which component of Hadoop is responsible for resource management?

1 Mark(s)

Your Answer:

ResourceManager ResourceManager
NameNode NameNode
DataNode DataNode
Secondary NameNode Secondary NameNode

Which of the following lines of code will not show a match?

1 Mark(s)

Your Answer:

>>> re.match('ab*', 'a') >>> re.match('ab*', 'a')
>>> re.match('ab*', 'ab') >>> re.match('ab*', 'ab')
>>> re.match('ab*', 'abb') >>> re.match('ab*', 'abb')
>>> re.match('ab*', 'ba') >>> re.match('ab*', 'ba')

Midjourney, Inc. was founded in?

1 Mark(s)

Your Answer:

New York New York
Los Angeles Los Angeles
California California
Austin Austin

In file handling, what does this terms means "r, a"?

1 Mark(s)

Your Answer:

read, append read, append
append, read append, read
write, append write, append
none of the mentioned none of the mentioned

Natural base of logarithm is:

1 Mark(s)

Your Answer:

2.7182 2.7182
2.7999 2.7999
2.8718 2.8718
2.1213 2.1213

Which of the following is true about the 'noexcept' specifier in C++?

1 Mark(s)

Your Answer:

It indicates that a function may throw an exception
It indicates that a function will never throw an exception
It automatically catches exceptions It automatically catches exceptions
It is used for exception handling It is used for exception handling

What will be the result of compiling and running the following code: public class Test{ public static void main(String... args) throws Exception{ Integer i = 34; int l = 34; if(i.equals(l)){ System.out.println("true"); }else{ System.out.println("false"); } } }

1 Mark(s)

Your Answer:

true true
false false
Compiler error Compiler error
None of these None of these

Why we use Alt + F shortcut keys on keyboard?

1 Mark(s)

Your Answer:

File menu File menu
Bold option Bold option
Edit option Edit option
None of these None of these

Multiple inheritance leaves room for a derived class to have:

1 Mark(s)

Your Answer:

dynamic members dynamic members
private members private members
public members public members
ambiguous members ambiguous members

Patterns can use the SQL string matching special character i.e.:

1 Mark(s)

Your Answer:

% %
? ?
# #
! !

. . . . . . . . is the output produced by TextOutputFor mat, Hadoop default OutputFormat.

1 Mark(s)

Your Answer:

KeyValueTextInputFormat KeyValueTextInputFormat
KeyValueTextOutputFormat KeyValueTextOutputFormat
FileValueTextInputFormat FileValueTextInputFormat
All of the mentioned All of the mentioned

Why do we use Adobe Illustrator along with R?

1 Mark(s)

Your Answer:

Collect the relevant data Collect the relevant data
Format the chart and to correct the errors
Tighten and format the chart Tighten and format the chart
Ingest and process the chart Ingest and process the chart

What is the main reason the OSI model was created?

1 Mark(s)

Your Answer:

To create a layered model larger than the DoD model.
So application developers can change only one layer's protocols at a time.
So different networks could communicate.
So Cisco could use the model. So Cisco could use the model.

How is the case_when() function used in dplyr?

1 Mark(s)

Your Answer:

To create a switch case statement in a column
To filter rows based on multiple conditions
To select specific columns from a data frame
To perform case-sensitive matching in a column

In C#, which method is used to split a string into substrings based on a specified delimiter?

1 Mark(s)

Your Answer:

Separate() Separate()
Split() Split()
Divide() Divide()
None of the above None of the above

What is the purpose of the 'std::unordered_multimap' container in C++ STL?

1 Mark(s)

Your Answer:

To store multiple key-value pairs in a hash table
To store key-value pairs in a sorted sequence
To store unique key-value pairs in a hash table
To store multiple key-value pairs in a sorted sequence

Operating systems and utility programs are in a class of software known as_________________?

1 Mark(s)

Your Answer:

system software system software
BIOS software BIOS software
software suites software suites
sequential software sequential software

Parameter passing mechanisms (call by value, reference)(MCQs) | T4Tutorials.com Skip to content T4Tutorials.com Home Homepage About Us Privacy Policy Jobs Openings Our Services Tutorials C++ DBMS OOP OS SE Theory Of Automata Software Testing Data Mining Data Structures Distributed Database HTML CSS Javascript PHP Projects Research Research Topics Research Questions List of Journals of Computer Science Jobs Test Pakistani Jobs PPSC FPSC Jobs Syllabus MCQs PAF ARMY NAVY Indian Jobs Papers MCQs Contact Email & Call us Youtube – Subscribe with us Facebook – Like our page Whatsapp – Follow Channel Open Search Search for: Main Menu Parameter passing mechanisms (call by value, reference)(MCQs) By Prof. Dr. Fazal Rehman Shamil, Last Updated:September 6, 2024 What is call by value?

1 Mark(s)

Your Answer:

Passing the address of an argument to a function
Passing a copy of the value of the argument to a function
Passing a reference to the argument to a function
Modifying the original variable directly

The global assembly cache:

1 Mark(s)

Your Answer:

Can store two dll files with the same name
Can store two dll files with the same name, but different version
Can store two dll files with the same name and same version
Can not store dll files with the same name

Which of the following class provides a subset of features provided by the Unix/GNU Sort?

1 Mark(s)

Your Answer:

KeyFieldBased KeyFieldBased
KeyFieldComparator KeyFieldComparator
KeyFieldBasedComparator KeyFieldBasedComparator
All of the mentioned All of the mentioned

Evaluating Your Answers

Data Structures Mock Test 14 : Question 1 of 40