System Software MCQ-4

MOVEM (Move Multiple) is an instruction often used in assembly language to move the contents of multiple registers to a block of memory or vice versa.

Object code is the machine-readable version of source code produced after the source code has been processed by a compiler or an assembler.

In absolute loading, the assembler handles allocation and relocation, leaving only the task of physically loading the code into memory for the loader.

According to specific systems programming contexts, some older compiler designs were categorized as non-reusable after a single execution pass.

Assembly language uses mnemonics (like MOV, ADD) which are much easier for humans to read and remember than the binary or hexadecimal strings used in machine language.

Timesharing allows multiple users to share system resources simultaneously, simplifying the management of system software for multiple concurrent tasks.

A general-purpose loader handles the allocation of space in memory, linking different object modules, relocating addresses, and finally loading the program for execution.

The loader is the specific system program responsible for copying programs and data from secondary storage (disk) into primary memory (RAM).

In an absolute loading scheme, the programmer or assembler determines the specific memory location (reallocation/allocation) during the assembly process.

A template provides a fixed syntax or structure that can be reused to generate specific units of information or code.

A linker combines one or more object files generated by a compiler into a single executable file, often called a load module.

System programs include any software designed to provide a platform for other software, such as OS, compilers, and debugging/trace tools.

A robust programming environment includes various tools like debug monitors to fix errors and dialog monitors to manage user/system interactions.

A macro pre-processor is a program that processes source code to expand macro definitions into full code before actual compilation or assembly begins.

Registers are small, high-speed storage locations within the CPU used to hold data currently being processed.

Word size refers to the number of bits a CPU can process at once, which typically defines the length of its general-purpose registers.

Macros are used to define a sequence of instructions that can be inserted anywhere in the program, helping to manage code length and repetitive segments.

Depending on the assembler or language rules, a macro can technically be defined anywhere as long as it is defined before its first call.

Macros are expanded 'in-line,' meaning they don't have the overhead of a function call (branching, saving registers, returning), making them faster than procedures.

The loader is the final system component that prepares the program in memory and starts its execution.