Test Your Programming Skills with Safcode!

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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"

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Quiz Start

1. ompilation of the preprocessor happens only _______ just before the first JavaScript is encountered. None of these
Twice
Thrice
Once

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2. __________ converts different language into JavaScript. Transpilers
Preprocessor
None of them
Compilers

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3. What is the alternate name for Java script? ECMAScript
LimeScript
Both a and d
ECMScript

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4. The ____ type specifies that a variable can take only positive values. Positive
Unsigned
Signed
Positive

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5. Which of these is a language and also asset of tools complied into javascript itself? TypeScript
CoffeeScript
None of Them
Non-Script

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6. Which of these consumes CPU cycles and makes the system less responsive? DOM API
Web Worker
JSON
XAMPP

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7. Java Script entities start with ____________ and end with ___________? Ampersand, semicolon
Semicolon, colon
Semicolon, Ampersand
Ampersand, colon

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8. What language defines the behavior of a web page? XML
CSS
HTML
Javascript

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9. How many times does the compilation of the preprocessor happen before the first javascript is encountered? Three
None of Them
One
Two

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10. Range for char datatype is _________. None of these
256 to 255
-128 to 127
-32768 t0 32767

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11. When an object through a combination of properties and methods its semantics, it is called ________. Traceur
Duck-typing
CoffeScript
Compiler

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12. _________ is a robust JavaScript minification tool. All of them
Gulp Tool
Google Closure Compiler
JavaScript Optimizer

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13. Identify the language from which JSON is derived. PHP
C
ECMAScript
JavaScript

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14. _________ 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

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15. Which of these are valid types of Web Worker? None of These
Dedicated and Shared
Neither Dedicated nor Shared
Only Shared are not Dedicated

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16. Which of the following is an asynchronous function? Parse
Grouping
Blocking
CallBack

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17. Which of the following keyword is used to create an object? new
None of these
Object
class

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18. Which of the following protocol service uses JSON? None of these
IP
HTTP
SOAP

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19. Which of the following is the tainted property of a window object in Java Script? Defaultstatus
Host
Protocol
Pathname

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20. Which among these predefined properties does RegExp have? Pattern Only
None of these
Pattern and Matcher
Matcher and Madrid

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