Selenium Web Element Locators & Selectors 3

Question 1

What is the recommended approach for locating elements whose IDs are dynamically generated and change on every page load?

Accepted Answer

Use By.cssSelector() with a stable data-testid attribute

Answer

Use By.id() with a wildcard pattern

Answer

Use absolute XPath from the root

Answer

Use By.tagName() and iterate through results

Question 2

Which CSS selector matches <input> elements whose placeholder attribute CONTAINS the string 'email'?

Accepted Answer

input[placeholder*='email']

Answer

input[placeholder='email']

Answer

input[placeholder^='email']

Answer

input.email

Question 3

Which of the following correctly selects the third

element within a

using XPath?

Accepted Answer

Both //ul/li[position()=3] and //ul/li[3]

Answer

//ul/li[last()]

Answer

//ul/li[position()=3]

Answer

//ul/li[3]

Question 4

Why is absolute XPath generally considered fragile and discouraged in Selenium test suites?

Accepted Answer

It breaks whenever any ancestor element in the fixed path is changed or reordered

Answer

Absolute XPath does not support attribute matching

Answer

It only works in the Firefox browser

Answer

It cannot locate elements inside iframes

Question 5

Which Selenium locator strategy generally provides better execution performance than XPath in most browsers?

Accepted Answer

By.cssSelector()

Answer

By.tagName()

Answer

By.linkText()

Answer

By.name()

Question 6

What does the XPath expression //div[contains(@class, 'active')] match?

Accepted Answer

Div elements whose class attribute contains the substring 'active'

Answer

Div elements with exactly and only the class 'active'

Answer

Div elements with an attribute literally named 'active'

Answer

All div elements on the page

Question 7

When multiple locator strategies are available for an element, what is the generally recommended order of preference in Selenium?

Accepted Answer

ID > Name > CSS Selector > XPath

Answer

XPath > CSS Selector > Name > ID

Answer

CSS Selector > XPath > ID > Name

Answer

Name > ID > XPath > CSS Selector