gs gs106 Lexical Structures - JavaScript Closures - Quiz No.1
gs gs106 Javascript Quiz
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Question 1: What kind of scoping does JavaScript use?
Literal
Lexical
Segmental
Sequential
Question 2: What must be done in order to implement Lexical Scoping?
Get the object
Dereference the current scope chain
Reference the current scope chain
Return the value
Question 3: What is closure?
Function objects
Scope where function’s variables are resolved
Both Function objects and Scope where function’s variables are resolved
Function return value
Question 4: Which of the following is not an example of closures?
Objects
Variables
Functions
Graphics
Question 5: Which of the following uses a lot of CPU cycles?
GUI
Statically generated graphics
Dynamically generated graphics
Generic scoping
Question 6: What will be the function of the following JavaScript code?
var scope = "global scope"; function checkscope() { var scope = "local scope"; function f() { return scope; } return f; }
Returns value null
Returns exception
Returns the value in scope
Shows an error message
Question 7: What is the fundamental rule of lexical scoping?
Functions are declared in the scope
Functions are executed using scope chain
Functions are declared outside the scope
Variables are declared within the function
Question 8: What is the opposite approach to the lexical scoping?
Literal scoping
Static scoping
Dynamic scoping
Generic scoping
Question 9: What is the purpose of the dynamic scoping?
Variables can be declared outside the scope
Variables must be declared outside the scope
Variables cannot be declared outside the scope
Variable cannot be declared within the function
Question 10: Which of the algorithmic languages is not lexical scoping standardized in?
Ada
Pascal
Modula2
Html
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