JavaScript Mock Test 9

10%

Question 1 of 10

1. When does a cycle occur during memory leak?

One object gets referenced

Two objects reference

No reference occurs

Three object gets referenced

Question 1 of 10

Question 2 of 10

2. Which of the following is a subtype of Blob?

Elemental Object

Data Object

Create Object

File Object

Question 2 of 10

Question 3 of 10

3. The blobs are generally stored in ____________

Both Memory and Disk

Memory

Disk

Temporary storage

Question 3 of 10

Question 4 of 10

4. To define each of the set classes as a property of the sets object (namespace) for the module, the statement is ___________

sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);

sets = sets.AbstractEnumerableSet.extend();

sets = sets.extend(...);

sets.SingletonSet = sets.extend(...);

Question 4 of 10

Question 5 of 10

5. What is the function used to stop capturing the ad hoc timing ?

stopTimer()

stopTimeLogging()

stophoc()

stopadhoc()

Question 5 of 10

Question 6 of 10

6. What is the purpose of the domLoading attribute?

Document begins to load

Document exists

Document can load

Document has loaded

Question 6 of 10

Question 7 of 10

7. The object that looks to the thread that creates it is _______________

Hash

Window

Worker

Element

Question 7 of 10

Question 8 of 10

8. What is the purpose of the advanced mode in the closure compiler?

Both Renames variables and function

Renames variables

Renames function

Changes structures

Question 8 of 10

Question 9 of 10

9. What is the result when the showPerformanceMetrics() is called before loading the remote script?

Throws an error

Throws an exception and It will load by itself

Throws an exception

It will load by itself

Question 9 of 10

Question 10 of 10

10. What is the function of the closure compiler?

Run faster

Download faster

Both Download faster and Run faster

Changes the code

Question 10 of 10