How is the attribute evaluation order determined in the oblivious methodology?

• A) Chosen at compiler design time
• B) Based on the syntax tree structure
• C) By considering the attribute dependencies
• D) By analyzing the attribute rules

Which two linear intermediate representations (IRs) are commonly used in modern compilers?

• A) High-level language and low-level language
• B) Stack-machine code and three-address code
• C) Register-transfer language and SSA form
• D) Assembly code and bytecode

What is the characteristic of the ordering of attribute evaluation in the rule-based methodology?

• A) It is fixed and determined at compiler-generation time.
• B) It is determined based on the values of the attributes.
• C) It is dynamically determined during the compilation process.
• D) It is randomly assigned during the dependency graph construction.

In the modified parser for the implementation of ad-hoc scheme for semantic analysis, what happens when a reduction by the production rule A → β occurs?

• A) The parser pops 2×|β| items from the stack.
• B) The parser pops 3×|β| items from the stack.
• C) The parser pushes 2×|β| items onto the stack.
• D) The parser pushes 3×|β| items onto the stack.

In attribute grammars, values used to compute inherited attributes flow ____________ in the parse tree.

• A) Top-down
• B) Bottom-up
• C) Top-up
• D) Bottom-down

What is the first step performed by the compiler application when using the dynamic method in attribute grammar evaluation?

• A) Constructing the parse tree
• B) Performing a topological sort
• C) Building the dependence graph
• D) Evaluating attributes in topological order

YACC is commonly used in the development of:

• A) Operating systems
• B) Compilers
• C) Web browsers
• D) Databases

How is a symbol table implemented?

• A) As a stack
• B) As a queue
• C) As an array
• D) As a hash table

In attribute grammars, attributes are distinguished based on the direction of value flow.

• A) False
• B) True
• C)
• D)

In syntax-directed translation, every time the parser encounters an identifier, it stores it in the _______________.

• A) Linear Array
• B) Parsing Stack
• C) Symbol table
• D) Priority Queue

In attribute grammars, a CFG is augmented with a set of ____________.

• A) Terminals
• B) Symbols
• C) Rules
• D) Non-terminals

Selecting an appropriate IR for a compiler project requires an understanding of both the source language and the target machine.

• A) False
• B) True
• C)
• D)

What does LALR(1) stand for?

• A) Look Ahead LL(1)
• B) Look Ahead RL(1)
• C) Look Ahead RR(1)
• D) Look Ahead LR(1)

What is the foundation of the ad-hoc scheme for semantic analysis?

• A) Formal language theory
• B) Abstract syntax trees
• C) Attribute grammars
• D) Compiler optimization techniques

In the oblivious methodology of attribute grammar evaluation, what is ignored during the compilation process?

• A) Attribute design considerations
• B) Attribute values
• C) Attribute dependencies
• D) Attribute rules and parse tree

Which of the following is NOT a typical use of attributed trees in compiler design?

• A) Error handling
• B) Type checking
• C) Optimization
• D) Syntax analysis

Stack-machine code and three-address code are mutually exclusive and cannot be used together in modern compilers.

• A) True
• B) False
• C)
• D)

In YACC, what does the notation $1 refer to?

• A) The second symbol on the left-hand side of a production.
• B) The first symbol on the right-hand side of a production.
• C) The first symbol on the left-hand side of a production.
• D) The second symbol on the right-hand side of a production.

Which tool uses the '$' notation to refer to values of symbols on the right-hand side of grammar productions?

• A) YACC
• B) Bison
• C) Flex
• D) Lex

If "A → B C D" is a production, then B is a child node of ____________ node.

• A) C
• B) B
• C) D
• D) A