Free Software Design and Architecture MCQs with Answers

• A. compiler
• B. translator
• C. assembler
• D. system software

Explanation: A compiler reads the complete high-level-language program and translates it into machine or object code.

• A. a program that places programs into memory and prepares them for execution
• B. a program that automate the translation of assembly language into machine language
• C. is a program that appears to execute a source program as if it were machine language
• D. program that accepts a program written in a high level language and produces an object program

Explanation: A compiler accepts a high-level-language source program and produces an object program that can later be linked and executed.

• A. cross compiler
• B. one pass compiler
• C. multipass compiler
• D. optimizing compiler

Explanation: A cross compiler runs on one computer system but generates executable code for a different target machine or platform.

• A. F8
• B. 03 16
• C. 0111EF
• D. 42 65 61 72

Explanation: The notation d#790 represents decimal 790, which is 0x0316 in hexadecimal, so the word is written as 03 16 in two-byte form.

• A. Linking
• B. Loading
• C. Allocation
• D. Reallocation

Explanation: With absolute loading, the object code already contains its final memory addresses, so the loader mainly places it into memory.

• A. a permanent table which lists all key words and special symbols of the language in symbolic form
• B. assembly language version of the program which is created by the code generation phase and is input to the assembly phase
• C. a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
• D. consists of a full or partial list or the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

Explanation: The assembly-code database is the assembly-language version produced by code generation and supplied as input to the assembler.

• A. the status of each program
• B. the priority of each program
• C. both A and B
• D. the information management support to a programmer using the system

Explanation: A process manager maintains information about each process, including its current status and scheduling priority.

• A. is a term that refers to the control programs of an operating system
• B. allows multiple programs to reside in separate areas of core at the same time
• C. allows the programmer to write base registers and displacements explicitly in the source program
• D. is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain

Explanation: A base register table records which general-purpose registers are being used as base registers and the base addresses stored in them.

• A. to build a uniform symbol table
• B. to build a literal table and an identifier table
• C. to parse the source program into the basic elements or tokens of the language
• D. to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs

Explanation: The syntax phase recognizes language constructs and invokes the appropriate routines to build an intermediate representation.

• A. IPL
• B. JCL
• C. Load modules
• D. Utility programs

Explanation: JCL, or Job Control Language, lets the programmer specify job and output-processing details, including special forms required for…

• A. Physically place the machine instructions and data into memory
• B. Allocate space in memory for the programs and resolve symbolic references between object decks
• C. Adjust all address dependent locations, such as address constants, to correspond to the allocated space
• D. All of the above

Explanation: A loader places machine code and data in memory, allocates required space, resolves external or symbolic references, and adjusts…

• A. independent one-pass processor
• B. independent two-pass processor
• C. processor incorporated into pass of a standard two-pass assembler
• D. all of the above

Explanation: A macro processor may operate independently in one or two passes, or it may be integrated into one pass of a two-pass assembler.

• A. Utilities
• B. Languages
• C. Operating system
• D. All of the above

Explanation: Systems software includes operating systems, utility programs, and language-processing software such as assemblers and compilers.

• A. an interpreter
• B. system software
• C. applications software
• D. an operating environment

Explanation: An interpreter translates high-level instructions and executes them, often one statement at a time, instead of producing a separate…

• A. assembler
• B. load and go
• C. linking loader
• D. cross compiler

Explanation: A linking loader combines separately compiled object modules, resolves references between them, relocates addresses, and prepares the…

• A. contains all constants in the program
• B. a permanent table which lists all key words and special symbols of the language in symbolic form
• C. a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
• D. consists of a full or partial list of the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

Explanation: A terminal table is a permanent compiler table containing the language's terminal symbols, such as keywords and special symbols.

• A. to build a uniform symbol table
• B. to build a literal table and an identifier table
• C. to parse the source program into the basic elements or tokens of the language
• D. All of the above

Explanation: Lexical analysis breaks source code into tokens and records identifiers, literals, and symbols in the relevant tables for later phases.

• A. Editor
• B. Spooler
• C. Debugger
• D. All of the above

Explanation: An editor and debugger are commonly classified as utility programs that support program development.

• A. operating systems
• B. input/output units that operate independently of the CPU
• C. both A and B
• D. neither A nor B

Explanation: Multiprogramming requires an operating system to manage several jobs and switch between them, while independent I/O allows the CPU to work…

• A. Allocate the CPU to a job
• B. Specify, to the operating system, the beginning and end of a job in a batch
• C. Read the input from the slow-speed card reader to the high-speed magnetic disk
• D. All of the above

Explanation: JCL tells a batch operating system where a job starts and ends and describes how it should be run.