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Bootstrap Multiple Choice Questions (MCQs) and Answers

Master Bootstrap with Practice MCQs. Explore our curated collection of Multiple Choice Questions. Ideal for placement and interview preparation, our questions range from basic to advanced, ensuring comprehensive coverage of Bootstrap concepts. Begin your placement preparation journey now!

Q61

Q61 How can you create a vertical group of buttons using Bootstrap?

A

Use .btn-group with .btn-group-vertical

B

Use .btn-vertical

C

Use .vertical-group

D

Use .btn-group with .vertical

Q62

Q62 If a Bootstrap dropdown menu is not working, what is a common thing to check?

A

The data-toggle attribute

B

The href attribute

C

The role attribute

D

The type attribute

Q63

Q63 What should be checked if Bootstrap tooltips are not initiating?

A

jQuery inclusion

B

Proper placement of data attributes

C

Link to Bootstrap CSS

D

Presence of popper.js

Q64

Q64 Why might a Bootstrap modal not appear when triggered?

A

Missing data-target attribute

B

Incorrect linkage to Bootstrap JS

C

Faulty CSS overrides

D

Incorrect button type

Q65

Q65 What could cause a Bootstrap Carousel to not cycle automatically as expected?

A

Incorrect data-ride attribute

B

Improperly configured interval

C

Faulty image links

D

Missing controls

Q66

Q66 What is the primary function of the Bootstrap Form component?

A

To validate user input data

B

To layout web page structure

C

To enhance graphics

D

To gather user inputs

Q67

Q67 How does Bootstrap enhance the accessibility of forms?

A

By adding automatic data validation

B

By using ARIA roles

C

By resizing form elements

D

By enabling AJAX submissions

Q68

Q68 Which Bootstrap class is used to create inline forms where elements are aligned horizontally?

A

.form-horizontal

B

.form-inline

C

.form-row

D

.form-align

Q69

Q69 In Bootstrap, what is the role of the .form-control class?

A

To validate form entries

B

To style form elements uniformly

C

To align form labels

D

To secure form data

Q70

Q70 What should be considered when using custom validation styles in Bootstrap forms?

A

Performance impact

B

Browser compatibility

C

Security implications

D

Responsive behavior

Q71

Q71 Which class is added to form elements to ensure they take the full width of their parent container in Bootstrap?

A

.full-width

B

.w-100

C

.expand

D

.full-size

Q72

Q72 How can you create a group of checkboxes that are vertically stacked and each has the same name in Bootstrap?

A

Use .form-check stacked with .form-check-label

B

Use .checkbox-group

C

Use .form-checkbox-group

D

Use .form-check with .form-check-input

Q73

Q73 What is the correct way to structure a Bootstrap form group that includes a label, input, and feedback message for validation?

A

Use .form-group with .form-label, .form-control, and .valid-feedback

B

Use .input-group with label, input, and .feedback

C

Use .control-group with .control-label, .control, and .help-block

D

Use .group-form with .label-group, .input-group, and .feedback-group

Q74

Q74 How do you apply a readonly attribute to a Bootstrap input field without affecting its style?

A

Add .readonly to the class attribute

B

Add readonly attribute to the input element

C

Use .form-readonly

D

Set disabled="true"

Q75

Q75 What common error should be checked if a Bootstrap form is not aligning properly on mobile devices?

A

Incorrect column classes

B

Missing .form-row class

C

Improper form wrapping

D

Incorrect use of .container

Q76

Q76 If a form's input fields are not responding to Bootstrap's styling,
what could be the reason?

A

Incorrect class names

B

Outdated Bootstrap version

C

Conflicting CSS styles

D

Incorrect HTML structure

Q77

Q77 What should you do if custom validation messages in Bootstrap are not displaying as intended?

A

Check JavaScript validation logic

B

Ensure data attributes are set correctly

C

Verify the use of .is-valid or .is-invalid classes

D

Recompile Bootstrap SCSS

Q78

Q78 What is the primary purpose of jQuery in Bootstrap's JavaScript components?

A

To manipulate DOM elements

B

To handle HTTP requests

C

To parse JSON data

D

To animate HTML elements

Q79

Q79 Which Bootstrap component uses JavaScript to toggle between showing and hiding content?

A

Carousel

B

Modal

C

Collapse

D

Tooltip

Q80

Q80 How does Bootstrap's JavaScript enhance form validation?

A

By adding custom validation rules

B

By automatically checking form completeness

C

By providing real-time feedback

D

By encrypting form data

Q81

Q81 In Bootstrap, what is the purpose of the data-toggle attribute?

A

To connect data entries

B

To toggle elements on the page

C

To bind data to a model

D

To transform data visuals

Q82

Q82 What must be considered when binding JavaScript events to Bootstrap components dynamically added to the DOM?

A

Event delegation

B

Browser compatibility

C

Loading order of scripts

D

Memory usage

Q83

Q83 Which class in Bootstrap is used to add a dismiss function to alerts via JavaScript?

A

.alert-dismissable

B

.alert-closable

C

.dismiss-alert

D

.alert-dismissible

Q84

Q84 How do you initialize all tooltips on a page using Bootstrap's JavaScript API?

A

$('[data-toggle="tooltip"]').tooltip()

B

$('.tooltip').init()

C

$('body').tooltip()

D

$('.tip').activate()

Q85

Q85 What is the correct way to programmatically open a modal in Bootstrap using JavaScript?

A

$('#myModal').modal('show')

B

$('#myModal').open()

C

$('#myModal').modal('open')

D

$('.modal').show('open')

Q86

Q86 If a Bootstrap dropdown is not triggering when clicked, what should you check first in the JavaScript setup?

A

If jQuery is loaded

B

If the dropdown method is called

C

If there is a syntax error in the script

D

If data-toggle attribute is set

Q87

Q87 What could prevent a Bootstrap tooltip from displaying when hovering over an element?

A

Missing title attribute

B

Incorrectly initialized tooltips

C

Overridden CSS styles

D

Improper script ordering

Q88

Q88 Which jQuery function is typically used to ensure that scripts run after the document is fully loaded?

A

.onLoad()

B

.documentReady()

C

.ready()

D

.loadComplete()

Q89

Q89 How do Bootstrap's JavaScript plugins enhance the user interface?

A

By adding dynamic effects like modals and dropdowns

B

By speeding up the website

C

By compressing content

D

By encrypting data

Q90

Q90 What is the primary purpose of the 'data-toggle' attribute in Bootstrap?

A

To switch data sources

B

To initiate JavaScript widgets

C

To toggle CSS classes

D

To activate server requests

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