MCQOPTIONS
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MCQOPTIONS
This section includes 27 Mcqs, each offering curated multiple-choice questions to sharpen your Javascript knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Let A(1), A(2), A(3),…….., A(100) be 100 sets such that number of elements in A(i)=i+1 and A(1) is subset of A(2), A(2)is subset of A(3),….., A(99) is subset of A(100). The number of elements in union of the all the sets are: n(A(1) U A(2) U A(3) …..U A(100)). |
| A. | 99 |
| B. | 100 |
| C. | 101 |
| D. | 102 |
| Answer» D. 102 | |
| 2. |
If A={1, 2, 3, 4}, then the number of the subsets of A that contain the element 2 but not 3, is? |
| A. | 16 |
| B. | 4 |
| C. | 8 |
| D. | 24 |
| Answer» C. 8 | |
| 3. |
Let the set be A= {a, b, c, {a,b}} then which of the following is false? |
| A. | {a, b} Є A |
| B. | a Є A |
| C. | {a} Є A |
| D. | b, c ЄA |
| Answer» D. b, c ЄA | |
| 4. |
Let a set be A={1, 2, 3} then the number of subsets containing two elements will be _________ |
| A. | 4 |
| B. | 3 |
| C. | 5 |
| D. | 8 |
| Answer» C. 5 | |
| 5. |
The number of subsets of a set can be odd or even. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
The number of subsets of a set is 5. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
If the number of subsets of a set are 4 then the number of elements in that sets are _________ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 8. |
If a set is empty then number of subsets will be _________ |
| A. | 1 |
| B. | 2 |
| C. | 0 |
| D. | 4 |
| Answer» B. 2 | |
| 9. |
The set containing all the collection of subsets is known as _________ |
| A. | Subset |
| B. | Power set |
| C. | Union set |
| D. | None of the mentioned |
| Answer» C. Union set | |
| 10. |
If a set contains 3 elements then the number of subsets is? |
| A. | 6 |
| B. | 3 |
| C. | 12 |
| D. | 8 |
| Answer» E. | |
| 11. |
IF_A={1,_2,_3,_4}_,THEN_THE_NUMBER_OF_THE_SUBSETS_OF_A_THAT_CONTAIN_THE_ELEMENT_2_BUT_NOT_3,_IS:?$ |
| A. | 16 |
| B. | 4 |
| C. | 8 |
| D. | 24 |
| Answer» C. 8 | |
| 12. |
WHICH_WAS_ONE_OF_THE_FIRST_SECURITY_SUBSETS_PROPOSED??$ |
| A. | FBJS |
| B. | Caja |
| C. | dojox.secure |
| D. | ADSafe |
| Answer» E. | |
| 13. |
Let_A(1),_A(2),_A(3),……..,A(100)_be_100_sets_such_that_number_of_elements_in_A(i)=i+1_and_A(1)_is_subset_of_A(2),_A(2)is_subset_of_A(3),…..,A(99)_is_subset_of_A(100)._The_the_number_of_elements_in_union_of_the_all_the_sets_are:_n(A(1)_U_A(2)_U_A(3)_…..U_A(100)):$# |
| A. | 99 |
| B. | 100 |
| C. | 101 |
| D. | 102 |
| Answer» D. 102 | |
| 14. |
Which_is_the_subset_that_transforms_web_content_into_secure_modules_that_can_be_safely_hosted_on_a_web_page?$ |
| A. | Microsoft Web Sandbox |
| B. | ADsafe |
| C. | Caja |
| D. | dojox.secure |
| Answer» E. | |
| 15. |
Let the set be A= {a , b, c, {a,b}} then which of the following is fals? |
| A. | {a, b} –Ñ A |
| B. | a –Ñ A |
| C. | {a} –Ñ A |
| D. | b, c –ÑA |
| Answer» D. b, c ‚Äö√Ñ√¨‚àö√´A | |
| 16. |
Which is the object that defines methods that allow complete control over page content? |
| A. | The client-side <strong>document</strong> object |
| B. | The server-side <strong>document</strong> object |
| C. | Both client-side and server-side <strong>document</strong> object |
| D. | Web document object |
| Answer» B. The server-side <strong>document</strong> object | |
| 17. |
Let a set be A={1, 2, 3} then the number of subsets containing two elements will be |
| A. | 4 |
| B. | 3 |
| C. | 5 |
| D. | 8 |
| Answer» C. 5 | |
| 18. |
Which are the two functions that are not allowed in any secure subset? |
| A. | evaluate() and restrict() |
| B. | eval() and the Function() constructor |
| C. | debugger() and test() |
| D. | eval() and debugger() |
| Answer» C. debugger() and test() | |
| 19. |
Why is this keyword not preferred in JavaScript? |
| A. | Highly memory consuming |
| B. | Functions should access the global objects |
| C. | Functions should not access the global objects |
| D. | Very inefficient to use |
| Answer» D. Very inefficient to use | |
| 20. |
Which is the subset that is a secure container designed for the purpose of safely running untrusted JavaScript? |
| A. | Sandbox |
| B. | The Good Parts |
| C. | Both Sandbox and Good Parts |
| D. | Web browser |
| Answer» B. The Good Parts | |
| 21. |
If the number of subsets of a set are 4 then the number of elements in that sets are |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 22. |
Why was “The Good Parts” designed as a language subset in JavaScript?$ |
| A. | To improve programmer flexibility |
| B. | To balance the workload of the programmer |
| C. | To create an in-built compiler and interpreter |
| D. | To improve programmer productivity |
| Answer» E. | |
| 23. |
If a set is empty then number of subsets will be |
| A. | 1 |
| B. | 2 |
| C. | 0 |
| D. | 4 |
| Answer» B. 2 | |
| 24. |
What is being imposed on each subset to ensure that it conforms to the subset? |
| A. | A parser to parse the code |
| B. | A parser that parses and adds to the subset |
| C. | A static verifier that parses code |
| D. | A predefined function to parse the code |
| Answer» D. A predefined function to parse the code | |
| 25. |
The set containing all the collection of subsets is known as |
| A. | Subset |
| B. | Power set |
| C. | Union set |
| D. | None of the mentioned |
| Answer» C. Union set | |
| 26. |
What does javascript use instead of == and !=? |
| A. | It uses bitwise checking |
| B. | It uses === and !== instead |
| C. | It uses equals() and notequals() instead |
| D. | It uses equalto() |
| Answer» C. It uses equals() and notequals() instead | |
| 27. |
The Crockford’s subset does not include which function in JavaScript? |
| A. | eval() |
| B. | coeval() |
| C. | equal() |
| D. | equivalent() |
| Answer» B. coeval() | |