Midterm Exam Review

In JavaScript, what is the scope of a variable declared with the let keyword within a block?

• a) Function scope

• b) Global scope

• c) Block scope

• d) Module scope

Which of the following statements about variable lifetime is true?

• a) A global variable's lifetime is limited to the block in which it is defined.

• b) A local variable's lifetime extends across the entire program.

• c) A static variable's lifetime is the duration of the program's execution.

• d) An automatic variable's lifetime is the duration of the program's execution.

Which of the following best describes "scope" in programming?

• a) The duration for which a variable exists in memory.

• b) The region of the code where a variable is accessible.

• c) The process of associating a variable with a value.

• d) The technique used to allocate memory for variables.

In Python, if a variable is declared outside any function or class, what is its scope?

• a) Local

• b) Enclosed

• c) Global

• d) Built-in

What is the primary difference between "static" and "dynamic" binding?

• a) Static binding occurs at runtime, whereas dynamic binding occurs at compile-time.

• b) Static binding occurs at compile-time, whereas dynamic binding occurs at runtime.

• c) Static binding is used only for global variables, whereas dynamic binding is used for local variables.

• d) Static binding is for variables, whereas dynamic binding is for functions.

Which of the following best describes "binding" in programming?

• a) The region of the code where a variable is accessible.

• b) The duration for which a variable exists in memory.

• c) The process of associating a variable with a value or function.

• d) The method used to manage memory allocation.

Which keyword is used in many programming languages to refer to a variable in the global scope from within a local scope?

• a) local

• b) global

• c) extern

• d) static

Which C++ storage class specifier means that the variable retains its value even after the scope in which it has been declared has been exited?

• a) auto

• b) register

• c) static

• d) extern

What structure allows you to store and access elements using numeric indices?

• Record

• Union

• Enumeration

• Array

Which concept allows the same operator to perform different operations based on the context or operand types?

• Operator Precedence

• Operator Associativity

• Operator Overloading

• Operator Expressions