Javascript interview questions part 36
Javascript interview questions part 36
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Total Questions: 20
1. Which of the following constants hold the value 2?
Correct Answer is : TYPE_BACK_FORWARD
2. Where does the DNS Lookup direct to ?
Correct Answer is : DNS Server
3. How many properties are available in a memory object?
Correct Answer is : 3
4. What is a heap in JavaScript?
Correct Answer is : Collection of JavaScript objects
5. What is the function of the memory object?
Correct Answer is : Gets memory usage
6. What is the command to access the Heap size limit?
Correct Answer is : performance.memory. jsHeapSizeLimit
7. What is the purpose of garbage collection?
Correct Answer is : Removes object with no reference
8. What does the usedJsHeapSize property indicate?
Correct Answer is : Amount of memory used
9. Which of the following property indicate the total size of the heap?
Correct Answer is : totalJsHeapSize
10. What can be done to monitor the memory usage?
Correct Answer is : Profiling
11. Which of the following gives the high level breakdown of memory usage?
Correct Answer is : about:memory
12. Which keyword must be used to get a more granular insight of the memory usage?
Correct Answer is : verbose
13. Which of the following are JavaScript logging library?
Correct Answer is : loglevel
14. What is the significance of the JavaScript logging library loglevel?
Correct Answer is : Lightweight
15. Which of the following browsers support the usage of the JavaScript logging library log4javascript?
Correct Answer is : All of the mentioned
16. What is the significance of the JavaScript logging library log4javascript?
Correct Answer is : Fully featured and Easy to use
17. Which of the following JavaScript logging framework lets one to toggle the plane?
Correct Answer is : Lumberjack
18. Which of the following JavaScript logging tool is also a debugging tool?
Correct Answer is : jsTracer
19. Which of the following JavaScript logging tool is standalone?
Correct Answer is : Log Hound
20. Which of the following are appenders?
Correct Answer is : All of the mentioned
