Understanding Assemblers and Compilers

What is the primary function of an assembler?

• To compile high-level programming languages into assembly code.

• The primary function of an assembler is to convert assembly language into machine code.

• To execute machine code directly on the hardware.

• To debug and optimize machine code for performance.

Name two types of loaders and their purposes.

• Dynamic Loader

• Static Loader

• Incremental Loader

• Absolute Loader, Relocatable Loader

What are the main operations performed by a macroprocessor?

• Memory allocation and deallocation

• The main operations performed by a macroprocessor are macro definition, macro expansion, and parameter handling.

• Macro optimization and code generation

• Syntax checking and error reporting

List the phases of a compiler in order.

• Lexical Analysis, Syntax Analysis, Semantic Analysis, Optimization, Code Generation

• Lexical Parsing, Semantic Checking, Code Analysis, Assembly

• Code Optimization, Syntax Checking, Error Handling, Code Execution

• Syntax Analysis, Code Generation, Lexical Analysis, Debugging

How does a linker differ from a loader?

• A linker combines object files; a loader loads executables into memory for execution.

• A linker creates object files; a loader compiles source code.

• A linker is responsible for memory management; a loader handles file permissions.

• A linker loads executables into memory; a loader combines object files.

What role does a lexical analyser play in compilation?

• The lexical analyser manages memory allocation for the compiled program.

• The lexical analyser converts source code into tokens for further processing in compilation.

• The lexical analyser optimizes the code for better performance during execution.

• The lexical analyser compiles the source code directly into machine code.

Explain the difference between a one-pass and a two-pass assembler.

• A one-pass assembler processes code in a single pass, while a two-pass assembler makes two passes to resolve forward references.

• A two-pass assembler is faster than a one-pass assembler for all types of code.

• A one-pass assembler requires more memory than a two-pass assembler.

• A one-pass assembler can handle more complex instructions than a two-pass assembler.

What is the purpose of relocation in loaders?

• To ensure programs are loaded in a specific order.

• To compress the program size in memory.

• To optimize program execution speed.

• The purpose of relocation in loaders is to enable programs to be loaded at different memory addresses.

Describe the function of a macro in a macroprocessor.

• A macro is a type of variable used in programming.

• A macro defines reusable code instructions that are expanded by the macroprocessor during compilation.

• A macro is a function that runs in a separate thread.

• A macro is a command that deletes code during compilation.

What is the significance of syntax analysis in the compiler phases?

• Syntax analysis ensures grammatical correctness and creates a parse tree for further compilation phases.

• Syntax analysis translates code into machine language.

• Syntax analysis optimizes code execution speed.

• Syntax analysis manages memory allocation during compilation.