Question 1

• Properties used for laying out elements in CSS
  • position

Question 2

• <iframe> tag
  • Used to display one web page inside another web page.
  • True

Question 3

• Block elements
  • Normally displayed without starting a new line.
  • False

Question 4

• HTML element for emphasized text
  • <em>

Question 5

• Java program output
  • Compile time error

Question 6

• Java program output
  • NaN

Question 7

• Unchecked exceptions in Java
  • RuntimeException, ClassCastException, NullPointerException

Question 8

• Java statements
  • JRE is required to run java programs.
  • JDK is required to compile java programs.
  • JVM is responsible for converting Byte code to the machine-specific code.
  • JRE does not contain JVM.

Question 9

• Java output
  • false

Question 10

• Java output
  • Compile-time error

Question 11

• Interfaces implemented by String class
  • Cloneable, Comparable, Serializable

Question 12

• String concatenation output
  • Java12Quiz7

Question 13

• Java output
  • Compile Time Error

Question 14

• Java String properties
  • String class is defined in java.lang package.
  • String is immutable in Java.
  • String is case sensitive in Java.
  • String is thread-safe in Java.
  • You cannot extend the String class

Question 15

• CSS selector for elements with class "example"
  • .example {}

Question 16

• CSS selector for elements with class names "one" and "two"
  • .one.two {}

Question 17

• CSS to add background color to all

  elements

  • h1 {background-color:#FFFFFF;}

Question 18

• CSS to align grid items horizontally
  • justify-content

Question 19

• CSS to center grid items horizontally and vertically
  • place-content: center center;

Question 20

• CSS to create a border with specified border widths
  • border-width: 10px 1px 5px 20px;

Question 21

• CSS for underline on hyperlinks
  • a {text-decoration:none;}

Question 22

• CSS for grouping selectors
  • Separate selectors by comma

Question 23

• CSS to hide an element on smaller screens
  • display: none;

Question 24

• CSS to make a grid item span multiple columns
  • grid-column: span 2;

Question 25

• CSS for creating list with squares
  • list-style-type: square;

Question 26

• CSS to select the elements with title attribute
  • [title] {}

Question 27

• JavaScript to select the first matching element with tag name
  • document.querySelector('tag')

Question 28

• JavaScript to select all <p> elements in a webpage:
  • p {}

Question 29

• CSS to create gaps between grid items
  • gap: 10px;

Question 30

• CSS abbreviation
  • Cascading Style Sheets

Question 31

• HSL color model
  • Hue Saturation Lightness

Question 32

• MySQL command to create primary key
  • ADD PRIMARY KEY (column_name)

Question 33

• MySQL command to change user password
  • ALTER USER user@host PASSWORD = 'new_password'

Question 34

• MySQL command to delete all records from a table
  • DELETE FROM table_name

Question 35

• MySQL command to create a copy of an existing table
  • CREATE TABLE new_table_name LIKE old_table_name

Question 36

• MySQL command to change column value
  • UPDATE

Question 37

• MySQL LEFT JOIN command
  • Returns all rows from the left table and matched rows from the right.

Question 38

• MySQL COMMIT command purpose
  • Commits the transaction to the database

Question 39

• MySQL LIKE command purpose
  • Compares a value to similar values using wildcard operators

Question 40

• MySQL command to delete a database
  • DROP DATABASE database_name

Question 41

• MySQL ORDER BY command purpose
  • Sorts the results in ascending order

Question 42

• Time complexity of linear search
  • O(n)

Question 43

• Data structure with no specific order
  • Set

Question 44

• Time complexity of Bubble sort
  • O(n^2)

Question 45

• Which is not a linear data structure?
  • None of above

Question 46

• Complexity theory does not include
  • Null case

Question 47

• Data structure that uses LIFO
  • Stack

Question 48

• In-order traversal of binary search tree

Question 49

• Data structure for storing elements in non-contiguous memory
  • Linked list

Question 50

• Data structure for efficient search, insert, and delete in sorted order
  • Binary search tree

Question 51

• Algorithm for finding shortest path in weighted graph
  • Dijkstra's algorithm

Question 52

• JavaScript property for elements that stay in the same place when the page is scrolled
  • fixed

Question 53

• HTML tag for headings
  • Heading

Question 54

• JavaScript to create a global variable in a function
  • Use the window keyword

Question 55

• JavaScript to open a link in a new tab
  • <a href="url" target="_blank"></a>

Question 56

• How to optimize images for better web performance
  • Compressing images and using appropriate file formats

Question 57

• How to prevent creating global variables in Javascript
  • Use the let or const keyword

Question 58

• How to access value of a global variable
  • variableName

Question 59

• How to attach an event listener to an HTML element?
  • element.addEventListener()

Question 60

• How to call a function named "myFunction":
  • myFunction()

Question 61

• How to check which mouse button was clicked in a mouse event?
  • event.button

Question 62

• How to create a fixed size container
  • Width: 300px; Height:200px;

Question 63

• JavaScript to create new HTML elements
  • createElement()

Question 64

• How do you create a responsive grid layout using CSS Grid?
  • Use percentage values for grid columns and use media queries to adjust grid properties based on screen size

Question 65

• Syntax for declaring a function
  • function myFunction() {}

Question 66

• Syntax to declare a JavaScript variable
  • var carName;

Question 67

• Arrow function syntax
  • const myFunction=()=>{}

Question 68

• CSS Grid Container
  • display: grid;

Question 69

• How to handle errors in a Promise
  • Using a .catch() block

Question 70

• Comment syntax in CSS
  • /* this is a comment */

Question 71

• Capitalizing each word in a text:
  • text-transform: capitalize

Question 72

• CSS syntax for making text bold
  • font-weight:bold;

Question 73

• JavaScript to remove HTML elements
  • element.remove()

Question 74

• JavaScript select all p elements inside div element
  • div p {}

Question 75

• Selector for selecting all p elements inside main class element
  • .main p { } or -p.main {}

Question 76

• Selector for element with id "demo"
  • #demo

Question 77

• JavaScript to find elements by their position in the document
  • document.querySelectorAll(':nth-child(n)')

Question 78

• JavaScript to select elements with class "test"
  • .test {}

Question 79

• JavaScript to select multiple elements with class name
  • getElementsByClassName()

Question 80

• JavaScript to select last matching element using CSS selector
  • document.querySelectorAll("selector")[document.querySelectorAll("selector").length-1]

Question 81

• JavaScript for loop start
  • for (let i = 0; i <= 5; i++)

Question 82

• JavaScript while loop
  • while (i <= 10)

Question 83

• Difference between server-side and client-side programming
  • Client-side executes in the user's browser; Server-side handles tasks on the server.

Question 84

• Promise.reject() method
  • Creates a rejected promise with a specified reason

Question 85

• Number of HTML5 attributes
  • None

Question 86

• Comment multi-line in JavaScript
  • /* comment */

Question 87

• Making if statement where the variable is not equal to 5
  • if (i != 5)

Question 88

• If statement in Javascript
  • if (i == 5)

Question 89

• CSS selector for direct children of <ul>
  • ul > li {}

Question 90

• JavaScript selector for all elements with a title attribute
  • [title] {}

Question 91

• JavaScript selector for first element with tag name
  • document.querySelector('tag')

Question 92

• HTML tag for largest heading
  • <h1>

Question 93

• HTML tag for emphasizing important text
  • <strong>

Question 94

• HTML tag for unordered list
  • <ul>

Question 95

• HTML tag for creating numbered list
  • <ol>

Question 96

• HTML for responsive viewport
  • <meta name="viewport" content="width=device-width, initial-scale=1">

Question 97

• Number of heading tags in HTML5
  • 6

Question 98

• HTML element for storing metadata
  • <head>

Question 99

• Default position of an HTML element
  • static

Question 100

• Abbreviation for HTML
  • Hyper Text Markup Language

Question 101

• Correct HTML tag for creating hyperlink
  • <a href="url">text</a>

Question 102

• HTML element for making a text area
  • <textarea>

Question 103

• When is callback function typically executed in async operation?
  • After the current task is completed and event loop is free.

Question 104

• HTML element to define aside content
  • <aside>

Question 105

• Web development language for dynamic content
  • JavaScript

Question 106

• Inline elements in JavaScript
  • True

Question 107

• HTML element to put JavaScript code
  • <script>

Question 108

• JavaScript comment
• //This is a comment

Question 109

• Calling functions in Javascript
  • functionName()

Question 110

• Concatenate two strings in Javascript
  • str1 + str2

Question 111

• Declaring a JavaScript Function
  • function myFunction() {}

Question 112

• Declaring a function expression in JavaScript
  • var myFunction = function() {};

Question 113

• Writing "Hello, World!" to alert box
  • alert("Hello, world!");

Question 114

• DOM abbreviation
  • Document Object Model

Question 115

• JavaScript function definition
  • a reusable block of code

Question 116

• Purpose of document object in Javascript
  • Manipulate the structure of HTML

Question 117

• Java program output
  • 400.0: 100.0

Question 118

• Java access modifier concept

Question 119

• Concept that uses access modifiers to protect variables in a class

Question 120

• Output of the JavaScript code (matches 1)
  • Match 1

Question 121

• JavaScript code output
  • 54321

Question 122

• Inserting code in a Java program

Question 123

• Java code to print 54321
  • x--;inserted at line 7

Question 124

• Java Code Output
  • 5 4 3 2 1 0

Question 125

• Method to find 'a' position in "banana":
  • s.indexOf('a');

Question 126

• Java code output
  • 100

Question 127

• Java version for Spring Boot 3
  • Java 17

Question 128

• Difference between PUT and PATCH in REST API
  • PUT fully updates an existing resource; PATCH modifies specified fields.

Question 129

• @Autowired annotation in Spring Boot
  • Automatically wires beans into properties, constructors, and methods

Question 130

• @EnableAutoConfiguration annotation purpose

Question 131

• Default scope of Spring Bean
  • Singleton

Question 132

• Purpose of Spring JDBC module:
  • Data access framework for databases

Question 133

• Ways to inject Spring Beans
  • Field-based, Setter-based, Constructor-based

Question 134

• Defining a derived query in Spring Data JPA
  • Method in the repository with a defined naming convention

Question 135

• Which is not a valid cascade type in JPA:
• MERGE

Question 136

• @RestController Annotation Combination
  • @Controller and @ResponseBody annotations

Question 137

• Stack order of element
  • z-index

Question 138

• HTML purpose
  • HTML describes the structure of a webpage

Question 139

• Regex * character
  • Matches zero or more occurrences of the preceding character

Question 140

• CSS fr unit
  • Fractional

Question 141

• CSS max-width property
  • Limits the width of an element to a specific value

Question 142

• CSS :hover pseudo-class
  • Styles an element on hovering over it

Question 143

• Callback hell in async javascript
  • Nested callbacks

Question 144

• CSS universal selector
  • *

Question 145

• CSS viewport width unit
  • vw

Question 146

• Regex \s character class
  • Matches any whitespace character

Question 147

• Regex ^ character
  • Matches the beginning of a line

Question 148

• Regex | character
  • Logical OR

Question 149

• JavaScript selectors purpose
  • Select and manipulate HTML elements in the DOM

Question 150

• CSS media queries purpose
  • Styles based on device characteristics

Question 151

• What is a Promise in Javascript?
  • Representation of a value that may be available now, later, or never.

Question 152

• SQL Injection
  • Malicious SQL queries injected in input fields

Question 153

• What is a web browser cache?
  • Stores previously downloaded resources, decreasing need to re-download.

Question 154

• Browser Rendering Optimization
  • Minimizing DOM manipulations and efficient CSS.

Question 155

• CSS Grid Purpose
  • Web page content organization and structure

Question 156

• What is JavaScript primarily used for

Question 157

• What is Responsive Web Design?
  • Adapts to various screen sizes

Question 158

• CSS for Bold <p> elements
  • p {font-weight: bold;}

Question 159

• HTML line break element
  • <br>

Question 160

• HTML audio element
  • <audio>

Question 161

• HTML Video Element
  • <video>

Question 162

• HTML background color
  • <body style="background-color: yellow;">

Question 163

• HTML background image
• <body style="background-image:url(background.gif)">

Question 164

• HTML image tag
  • <img src="image.gif" alt="MyImage">

Question 165

• HTML checkbox
  • <input type="checkbox">

Question 166

• HTML dropdown list
  • <select>

Question 167

• HTML text input field
  • <input type="text">

Question 168

• HTML external style sheet
• <link rel="stylesheet" type="text/css" href="mystyle.css">

Question 169

• Javascript change content of HTML element
• document.getElementById("demo").innerHTML = "Hello World!"

Question 170

• Javascript external script reference
  • <script src="xxx.js">

Question 171

• Javascript array
  • const colors = ["red", "green", "blue"];

Question 172

• Critical rendering path - purpose
  • Browser steps for loading and rendering a web page

Question 173

• Javascript let/const difference
  • let variables can be reassigned, const cannot.

Question 174

• Font size of the <h1> tag

Question 175

• Global object in Javascript
  • window

Question 176

• Synchronous vs Asynchronous javascript
  • Synchronous code executes sequentially, Asynchronous allows tasks to overlap

Question 177

• Purpose of databases in web development

Question 178

• Primary purpose of HTML

Question 179

• Purpose of server-side scripting languages

Question 180

• Purpose of CSS selectors

Question 181

• Purpose of lazy loading in web development
  • Delays loading of images until needed

Question 182

• Purpose of parameters in a function
  • Accept input values

Question 183

• Purpose of <meta charset="UTF-8"> tag
  • Sets character encoding

Question 184

• Purpose of the @media rule in CSS
  • Applies styles based on conditions (e.g., screen size).

Question 185

• Purpose of the addEventListener method
  • Attaches an event handler to an element

Question 186

• Purpose of the DNS (Domain Name System)

Question 187

• Flex-direction property purpose
  • Defines the main axis direction in a flex container

Question 188

• Flexbox layout in responsive design
  • Aligns elements horizontally and vertically

Question 189

• Purpose of grid-area property
  • Defines the columns and rows a grid item spans in CSS Grid

Question 190

• Purpose of grid-auto-flow property
  • Defines the flow of items in grid containers

Question 191

• Purpose of grid-column-gap property
  • Defines the space/gap between grid columns

Question 192

• Purpose of grid-template-rows property
  • Specifying the layout for grid rows

Question 193

• Purpose of the <head> element
  • Holds metadata about the document

Question 194

• Purpose of the <figure> element
  • Embedding images like images, videos

Question 195

• Purpose of the <form> element
  • Creates a container for form elements

Question 196

• Purpose of the <form> element
  • Creates a container for input elements

Question 197

• ID selector purpose
  • Targets specific elements with a unique ID

Question 198

• JavaScript JSON.parse() function purpose
  • Parses JSON strings into JavaScript objects

Question 199

• CSS minmax() function
  • Sets minimum and maximum values for grid items

Question 200

• querySelectorAll() method
  • Selects all elements matching a CSS selector

Question 201

• CSS rem unit in responsive design
  • Relative to the root element's font size

Question 202

• JavaScript setAttribute() purpose
  • Adds attributes to HTML elements

Question 203

• JavaScript setTimeout() function purpose
  • Delays the execution of a function for a set amount of time

Question 204

• JavaScript window.alert() method purpose
  • Displays an alert box with a message

Question 205

• Purpose of window.location in Javascript
  • Navigating to new webpages

Question 206

• JavaScript window.setTimeout() method
  • Delays a function's execution by a specified time

Question 207

• Return type of a Javascript function without explicit return
  • undefined

Question 208

• Role of a web server
  • Serving web pages to clients

Question 209

• Purpose of DOCTYPE in HTML
  • Defines the document type

Question 210

• HTML META tag with attribute charset="UTF-8" purpose
  • Defines the character set

Question 211

• Scope of a variable declared within a function in JavaScript
  • Function scope

Question 212

• JavaScript keyword to declare a variable
  • var

Question 213

• Language to define web page behavior
  • JavaScript

Question 214

• CSS position with relative value
  • Adjusted away from normal position, other objects are not adjusted according to the gap

Question 215

• HTML external stylesheet reference location
  • <head> section

Question 216

• Correct location to insert Javascript?
  • <head> and <body>

Question 217

• HTML input element attribute for placeholders
  • placeholder

Question 218

• HTML attribute for unique identifiers
  • id

Question 219

• Character used for closing an HTML tag
  • /

Question 220

• CSS property to handle text size

Question 221

• CSS property to make images and videos responsive
  • max-width

Question 222

• CSS property to change text color
  • color

Question 223

• CSS property for element stacking order
  • z-index

Question 224

• CSS property for controlling grid lines visibility
  • grid: (e.g., 1px solid black;)

Question 225

• CSS property for creating flexible layouts

Question 226

• CSS property to set the number of columns

Question 227

• Correct DOCTYPE declaration for HTML5
  • <!DOCTYPE html>

Question 228

• HTML element to group related content
  • <section>

Question 229

• Javascript mouseover event trigger
  • Mouseover

Question 230

• Javascript element triggering click event

Question 231

• Javascript keyboard event for key press
  • keyDown

Question 232

• Javascript function for selecting element by ID
  • getElementById()

Question 233

• HTML attribute for inline styling
  • style

Question 234

• Html attribute for alternative image text
  • alt

Question 235

• HTML tag for navigation links
  • <nav>

Question 236

• HTML element for defining document title
  • <title>

Question 237

• HTML element for document footer

Question 238

• HTML element to create a header for a document or section
  • <header>

Question 239

• HTML element to create a hyperlink
  • <a>

Question 240

• HTML tag for internal style sheet

Question 241

• HTTP method for requesting data from a server

Question 242

• Input type for a slider control

Question 243

• Example of a popular SQL database
  • MySQL

Question 244

• Correct CSS syntax
  • body {color: black;}

Question 245

• Method to read and render HTML pages

Question 246

• Browser Console logging function

Question 247

• Language used for styling

Question 248

• Javascript method for catching errors in a promise

Question 249

• Method to change content of an HTML element

Question 250

• Javascript method for opening a new window

Question 251

• Javascript method for selecting elements by index

Question 252

• Method for selecting elements with CSS selector

Question 253

• JavaScript object for browser window actions
  • window

Question 254

• Attributes to create a link in HTML elements

Question 255

• Regex for end of line
  • $

Question 256

• Popular server side programming language

Question 257

• Potential drawback of asynchronous code in Javascript

Question 258

• Valid way to represent a color using hexadecimal in HTML

Question 259

• Invalid JavaScript variable name

Question 260

• HTML <table> elements

Question 261

• Organization for World Wide Web standards

Question 262

• PHP function for regex match and replace

Question 263

• PHP function for Regex match with subpatterns and return matches

Question 264

• Programming language for server-side scripting

Question 265

• Programming language for styling webpages
  • CSS

Question 266

• Property to align flex items
  • justify-content

Question 267

• Property to change background color
  • background-color

Question 268

• Property to change font of an element
  • font-family

Question 269

• Property to change left margin

Question 270

• Property to control order of grid items

Question 271

• Property for obtaining the current URL in Javascript
  • window.location.href

Question 272

• Property to get input field value
  • value

Question 273

• Protocol for data transfer over World Wide Web
  • HTTP

Question 274

• Selector for all elements of a specific type

Question 275

• CSS selector specific attribute with a value
  • element[attribute=value]

Question 276

• HTML tag for table header - <th>

Question 277

• HTML tag for external JavaScript
  • <script>

Question 278

• Database technology for non-relational/flexible unstructured data
  • NoSQL

Question 279

• Unit for responsive font sizes
  • em

Question 280

• CSS property to make columns equal width
  • 1fr

Question 281

• Element similar to <b>
  • <strong>

Question 282

• Element similar to <i>
  • <em>

Question 283

• Organization creating web standards
  • W3C

Question 284

• Why is HTTPS important?
  • Secure and encrypted connection between client and server

Question 285

• Importance of website accessibility
  • Better user experience for people with disabilities