Polymer JS MCQ Questions And Answers

PolymerJS MCQ : This section focuses on "Basics" of Polymer JS. These Multiple Choice Questions (MCQ) should be practiced to improve the PolymerJS skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Polymer.js is a JavaScript library created by?

A. Facebook
B. Google
C. IBM
D. Oracle

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2. Polymer is an open-source?

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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3. PolymerJs initially released on?

A. May 20, 2015.
B. Jun 27, 2015.
C. Mar 27, 2015.
D. May 27, 2015.

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4. It provide __________ data binding?

A. one-way
B. two-way
C. Both A and B
D. None of the above

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5. Which of the folllowing features of polymerJS?

A. It is a JavaScript library built on top of the web standards APIs
B. It provides the polyfills (web component specifications)
C. It uses Google material design for the development of hybrid mobile application.
D. All of the above

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6. Polymer elements are a set of ?

A. visual
B. non-visual
C. designed
D. Both A and B

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7. Which elements are built for e-commerce-specific use cases?

A. gold elements
B. neon element
C. platinum elements
D. molecules elements

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8. What is true about platinum elements?

A. The platinum elements animated transitions for Polymer elements using web animations.
B. The platinum elements provide features to turn your web page into a true webapp.
C. The platinum elements used to connect a group of plugins to the Polymer application.
D. Both B and C

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9. These are the basic building blocks for creating an application.

A. app elements
B. iron elements
C. paper elements
D. silver elements

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10. Custom element name should start with a ?

A. Lower case
B. Upper case
C. colon
D. hash

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11. Which property of DOM used for building components?

A. Shadow components
B. Styling
C. Shadow DOM
D. shadow tree

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12. Shadow DOM allows locating the children in a scoped subtree, which is known as?

A. shadow root
B. shadow host
C. shadowRoot
D. shadow tree

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13. The fallback content can be displayed when there are __________ allocated to the slot.

A. one nodes
B. two nodes
C. three nodes
D. no nodes

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14. Path is a string in the data system

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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15. Data binding can be used to connect the property or an attribute of an element from the host element in its local DOM.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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16. The text in binding annotation are enclosed by ().

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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17. The annotated event listeners are used by Polymer, which defines the event listeners as ________ of DOM template.

A. large chunks
B. medium chunks
C. small chunks
D. All of the above

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18. Event type "up" is used for?

A. It specifies that the finger/button has moved down
B. It specifies the occurrence of up and down actions.
C. It specifies that the finger/button has moved up.
D. It specifies the occurrence of up and down actions.

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19. It specifies the occurrence of up and down actions.

A. up
B. down
C. tap
D. track

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20. sourceEvent : It specifies the down action caused by DOM event.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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