language-processors computer-science question and answers -Page 2

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Home Aptitude

1. The advantage(s) of incorporating the macro processor into pass 1 is/ are:
Options
A. many functions do not have to be implemented twice
B. Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler
C. more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros
D. All of the above

2. A development stategy whereby the executive control modules of a system are coded and tested first, is known as
Options
A. Bottom-up development
B. Top-down development
C. Left-Right development
D. All of the above

3. Job Control Language (JCL) statements are Used to
Options
A. Read the input from the slow-speed card reader to the high-speed magnetic disk
B. Specify, to the operating system, the beginning and end of a job in a batch
C. Allocate the CPU to a job
D. All of the above

4. In analyzing the compilation of PL/I program, the term "Syntax analysis" is associated with
Options
A. recognition of basic syntactic constructs through reductions
B. recognition of basic elements and creation of uniform symbols
C. creation of more optional matrix
D. use of macro processor to produce more optimal assembly code

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

6. A compiler for a high-level language that runs on one machine and produces code for a different machine is called
Options
A. optimizing compiler
B. one pass compiler
C. cross compiler
D. multipass compiler

7. Assembly code data base is associated with
Options
A. a permanent table which lists all key words and special symbols of the language in symbolic form
B. a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
C. 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
D. assembly language version of the program which is created by the code generation phase and is input to the assembly phase

8. A non-relocatable program is one which
Options
A. cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation
B. consists of a program and relevant information for its relocation
C. can itself perform the relocation of its address-sensitive portions
D. All Of the above

9. Convert the 11014B machine language instructions into assembly language, assuming that they were not generated by pseudo-ops:
Options
A. ASRA
B. LOADA h#OD4E, i
C. STOREA h#014B, d
D. ADDA h#01FE, i

10. Terminal Table
Options
A. a permanent table which lists all key words and special symbols of the language in symbolic form
B. a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
C. 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
D. contains all constants in the program

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