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Test Your Programming Skills with Safcode!
Here is all important interview / exams questions.
Student doing practice apptitude test on safcode platform.
Instruction: "Total Number of Questions: 20
Each question carry 10 mark , no negative marking"
Quiz Start
1. When an object through a combination of properties and methods its semantics, it is called ________.
Duck-typing
Compiler
CoffeScript
Traceur
View Answer
2. ompilation of the preprocessor happens only _______ just before the first JavaScript is encountered.
Once
None of these
Thrice
Twice
View Answer
3. _________ converts edge JavaScript into plain old ES5 JavaScript that can run in any new as well as old browser.
None of These
Webpack
Babel
Rollup
View Answer
4. _________ is a robust JavaScript minification tool.
Gulp Tool
Google Closure Compiler
JavaScript Optimizer
All of them
View Answer
5. How many times does the compilation of the preprocessor happen before the first javascript is encountered?
None of Them
One
Three
Two
View Answer
6. __________ converts different language into JavaScript.
Compilers
Transpilers
None of them
Preprocessor
View Answer
7. Which of these are valid types of Web Worker?
Neither Dedicated nor Shared
Only Shared are not Dedicated
Dedicated and Shared
None of These
View Answer
8. Which among these predefined properties does RegExp have?
None of these
Pattern and Matcher
Pattern Only
Matcher and Madrid
View Answer
9. Which of these is a language and also asset of tools complied into javascript itself?
TypeScript
None of Them
Non-Script
CoffeeScript
View Answer
10. Java Script entities start with ____________ and end with ___________?
Ampersand, semicolon
Semicolon, colon
Semicolon, Ampersand
Ampersand, colon
View Answer
11. What language defines the behavior of a web page?
HTML
Javascript
CSS
XML
View Answer
12. Which of the following protocol service uses JSON?
SOAP
None of these
HTTP
IP
View Answer
13. A _______ define what kind of value will be stored by a particular variable.
Return Type
Data Type
Variable
None of these
View Answer
14. Which of the following is the tainted property of a window object in Java Script?
Host
Pathname
Defaultstatus
Protocol
View Answer
15. Which of the following is an asynchronous function?
CallBack
Parse
Grouping
Blocking
View Answer
16. The ____ type specifies that a variable can take only positive values.
Positive
Unsigned
Positive
Signed
View Answer
17. Range for char datatype is _________.
None of these
-32768 t0 32767
256 to 255
-128 to 127
View Answer
18. What is the alternate name for Java script?
LimeScript
ECMScript
ECMAScript
Both a and d
View Answer
19. Which of these consumes CPU cycles and makes the system less responsive?
JSON
XAMPP
Web Worker
DOM API
View Answer
20. Which of the following keyword is used to create an object?
new
class
None of these
Object
View Answer