Quiz 11

Question 1

Which of the following best describes a block in programming?
A runtime error caused by invalid memory access; A method for iterating over collections; A set of statements enclosed in {} that defines a scope; A type of conditional statement

Answer 1

A set of statements enclosed in {} that defines a scope

Question 2

What is “scope” in a programming language?
The place where the variable is stored; The region in a program where a variable can be accessed; The data type of a variable; The lifetime of a variable

Answer 2

The region in a program where a variable can be accessed

Question 3

What is a key disadvantage of dynamic scoping?
It results in slower program execution; It forces variables to be global; It uses more memory during runtime; It makes code harder to debug due to less predictable variable resolution

Answer 3

It makes code harder to debug due to less predictable variable resolution

Question 4

What is the primary purpose of a symbol table in a compiler?
To store information about identifiers
To keep track of syntax rules
To store program code
To generate machine code

Answer 4

To store information about identifiers

Question 5

What is “semantics” in programming languages?
The syntax rules of a language
The use of data structures
How programs are compiled
The study of meaning in programming constructs

Answer 5

The study of meaning in programming constructs

Question 6

Which of the following is NOT a method for specifying semantics?
Defining a translator
Syntax tree compression
Language reference manual
Formal definition

Answer 6

Syntax tree compression

Question 7

If binding time is _____, it is considered as dynamic binding.
Execution time
Link time
Translation time
Language definition time

Answer 7

Execution time

Question 8

Which of the following syntax errors cannot be detected using a symbol table?
Duplicate declaration of variables
Misplaced semicolons
Type mismatches in assignments
Use of undeclared variables

Answer 8

Misplaced semicolons

Question 9

What is binding in programming languages?
The process of debugging a program
The process of resolving a method call at runtime
The process of converting source code into machine code
The process of associating an attribute with a name

Answer 9

The process of associating an attribute with a name

Question 10

When analyzing nested scopes, why is a stack an appropriate data structure?
Because it maintains a LIFO order, aligning with how nested scopes are entered and exited
Because it supports bidirectional traversal
Because it provides constant time-access to all variables
Because it allows elements to be accessed randomly

Answer 10

Because it maintains a LIFO order, aligning with how nested scopes are entered and exited