#1
What is the correct way to declare a variable in Python?
x = 10
ExplanationAssignment of value 10 to variable x.
#2
In Java, what is the data type of the variable 'age' if it stores whole numbers?
int
ExplanationInteger data type.
#3
Which of the following is a valid way to comment a single line in Python?
# This is a comment
ExplanationSyntax for single-line comments.
#4
What is the output of the following C code snippet: `printf('%d', 5 + 3);`?
53
ExplanationPrinting the result of integer addition.
#5
What is the main purpose of the 'break' statement in programming?
To terminate a loop or switch statement
ExplanationExiting a loop or switch early.
#6
Which programming language uses the concept of 'pointers' extensively?
C
ExplanationHeavy reliance on memory addresses.
#7
What is the purpose of the 'const' keyword in C++?
To declare a constant variable
ExplanationDeclaration of a variable that can't be modified.
#8
In JavaScript, what is the difference between 'let' and 'const' for variable declaration?
'let' allows reassignment, while 'const' does not
ExplanationDistinguishing between mutable and immutable bindings.
#9
In Java, what does the 'final' keyword indicate when used with a variable?
The variable is a constant
ExplanationMarking a variable as unchangeable.
#10
What does the acronym 'DRY' stand for in software development?
Don't Repeat Yourself
ExplanationPrinciple of avoiding redundant code.
#11
What is the role of the 'this' keyword in JavaScript?
To refer to the current object instance
ExplanationAccessing the object's properties within its scope.
#12
In C++, what is the 'sizeof()' operator used for?
To determine the size of a variable in bytes
ExplanationCalculating the memory size of a variable.
#13
What is the significance of the 'volatile' keyword in C programming?
To indicate that the variable may be changed at any time by external factors
ExplanationFlagging a variable as subject to unpredictable changes.
#14
In Python, what is the purpose of the 'global' keyword?
To declare a global variable
ExplanationSpecifying a variable as global in scope.
#15
What is the purpose of the 'try', 'catch', and 'finally' blocks in exception handling?
To handle and recover from exceptions
ExplanationManaging errors and executing cleanup code.
#16
In Python, how do you import a module named 'example'?
import example
ExplanationModule inclusion syntax.
#17
In JavaScript, what is the purpose of the 'bind' method?
To attach a function to a specific context
ExplanationBinding a function to a particular object.