Machine Learning MCQ Questions with answers and solutions Page 52

Q. A new web browser window can be opened using which method of the Window object ?

(A) createtab()
(B) Window.open()
(C) open()
(D) all of the mentioned

💬 Discuss

✅ Correct Answer: (B) Window.open()

Explanation: You can open a new web browser window with the open() method of the Window object. Window.open() loads a specified URL into a new or existing window and returns the Window object that represents that window.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. What will happen if the first argument of open() is omitted?

(A) Error Page
(B) Remains in the same page
(C) about:blank
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (B) Remains in the same page

Explanation: When the first argument of the open() is omitted, the about:blank is opened.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which object serves as the global object at the top of the scope chain?

(A) Hash
(B) Property
(C) Element
(D) Window

💬 Discuss

✅ Correct Answer: (D) Window

Explanation: The Window object serves as the global object at the top of the scope chain in client-side JavaScript.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which is the property of a Window object that holids the name of the frame?

(A) name
(B) title
(C) description
(D) none of the mentioned

💬 Discuss

✅ Correct Answer: (A) name

Explanation: The name property of a Window object holds the name of the frame, if it has one. This property is writable, and scripts can set it as desired.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. When will the fourth argument to open() useful?

(A) When the second argument names a retired window
(B) When the first argument names an existing window
(C) When the second argument names an existing window
(D) When the first argument names a retired window

💬 Discuss

✅ Correct Answer: (C) When the second argument names an existing window

Explanation: The fourth argument to open() is useful only when the second argument names an existing window. This fourth argument is a boolean value that indicates whether the URL specified as the first argument should replace the current entry in the window’s browsing history (true) or create a new entry in the window’s browsing history (false). Omitting this argument is the same as passing false.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. The inner frame within a top-level window can be referred as

(A) parent(parent)
(B) parent.parent
(C) parent*parent
(D) none of the mentioned

💬 Discuss

✅ Correct Answer: (B) parent.parent

Explanation: If a frame is contained within another frame that is contained within a top-level window, that frame can refer to the top-level window as parent.parent.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. What is the code snippet to go back to a history twice?

(A) history(2);
(B) history(-2);
(C) history.go(-2);
(D) history.go(2);

💬 Discuss

✅ Correct Answer: (C) history.go(-2);

Explanation: The above code snippet goes back 2, like clicking the Back button twice.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. If the window has child windows, how will the browsing histories be affected?

(A) Numerically interleaved
(B) Chronologically interleaved
(C) Both Numerically and Chronologically interleaved
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (B) Chronologically interleaved

Explanation: If a window contains child windows, the browsing histories of the child windows are chronologically interleaved with the history of the main window.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. The length property belongs to which of the following objects?

(A) Window
(B) Element
(C) History
(D) Document

💬 Discuss

✅ Correct Answer: (C) History

Explanation: The length property of the History object specifies the number of elements in the browsing history list, but for security reasons scripts are not allowed to access the stored URLs.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. What is the datatype of the go() method’s parameter?

(A) String
(B) Integer
(C) Double
(D) Float

💬 Discuss

✅ Correct Answer: (B) Integer

Explanation: The go() method takes an integer argument and can skip any number of pages forward and backward in the history list.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

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