Related Questions

The visibility of a property or method can be defined by prefixing the declaration with the keywords public, protected or private. Class members declared public can be accessed everywhere. Members declared protected can be accessed only within the class itself and by inherited classes. Members declared as private are not accessible.
A True
B False
Which are usually variables that are used internally in object methods and also are globally visible variables?
A Object properties
B Variable properties
C Method properties
D Internal properties
You use the get_class_methods() function to return the names of all the methods in the class. Which function will you use to print it on the screen?
A printf()
B print_ar
C print_r
D echo
You can extend the exception base class, but you cannot override any of the preceding methods because the are declared as__________
A protected
B final
C static
D private
The main difference between the variables declared with var and with let is
A var is confined to a particular function but let is not
B let is confined to a particular function but var is not
C var defines values based on conditions but let does not
D none of the mentioned
Which one of the following methods serve to measure correlation between two variables?
A Scatter diagram
B Frequency distribution
C Two-way table
D Coefficient of rank correlation
If white is called black, black is called red, red is called yellow, yellow is called green, green is called blue, blue is called violet and violet is called orange, what would be the colour of human blood?
A green
B black
C red
D yellow
Three math classes , X, Y , and Z, take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all student classes Y and Z together is 81. What is the average for all the three classes?
A 81
B 81.5
C 82
D 84.5
The object whose properties are inherited by all instances of the class, and properties whose values are functions behaving like instance methods of the class, is
A Instance object
B Constructor object
C Destructor object
D Prototype object
When you extend a class, the subclass inherits all of the ........ methods from the parent class.
A Public
B private
C protected
D both A and C

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