How can you add a custom validation method using the jQuery Validation Plugin?

How can you prevent a form from being submitted if it is invalid?

A). By using the onsubmit option

B). By using the preventSubmit option

C). By using the blockSubmit option

D). By using the submitHandler option

How can you display all error messages in one place instead of next to each field?

A). Use the errorSummary option

B). Use the errorLabel option

C). Use the errorContainer option

D). Use the errorList option

What is the correct way to specify validation rules in the jQuery Validation Plugin?

A). rules: { fieldName: rule }

B). fields: { rule: fieldName }

C). options: { fieldName: rule }

D). validate: { rule: fieldName }

How do you include the jQuery Validation Plugin in your HTML file?

A). Using a script tag

B). Using a link tag

C). Using an iframe

D). Using an embed tag

What is the primary purpose of form validation?

A). Enhance visual design

B). Secure data submission

C). Improve page load speed

D). Reduce server requests

What is the purpose of the highlight option in jQuery Validation Plugin?

A). To change the color of valid fields

B). To change the color of invalid fields

C). To add a CSS class to valid fields

D). To add a CSS class to invalid fields

What is the default event that triggers form validation in the jQuery Validation Plugin?

A). onSubmit

B). onBlur

C). onChange

D). onFocus

How can you make a field optional in jQuery Validation Plugin?

A). By not including it in the rules section

B). By setting the required rule to false

C). By using the optional rule

D). By setting the field type to optional

How do you validate a field that should only contain numbers?

A). Use the number rule

B). Use the digits rule

C). Use the numeric rule

D). Use the integer rule

Which rule ensures that a field must not be left empty?

A). minlength

B). maxlength

C). required

D). email