Questions and answers for exam Preparation

MCQs

Total Questions : 61 | Page 6 of 7 pages

Question 51. A base register table

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

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Answer: Option B. -> is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain

Question 52. The function(s) of the Storage Assignment is/are:

to assign storage to all variables referenced in the source program
to assign storage to literals, and to ensure that the storage is allocated and appropriate locations are initialized
to assign storage to all temporary locations that are necessary for intermediate results
All of these

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Answer: Option D. -> All of these

Question 53. Indicate whether the statement LDA B is a statement, in

Machine language
All of these
High level language
Assembly language

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Answer: Option D. -> Assembly language

Question 54. An algorithm is best described as

A step by step procedure for solving a problem
All of these
A branch of mathematics
A computer language

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Answer: Option A. -> A step by step procedure for solving a problem

Question 55. A sequence of instructions, in a computer language, to get the desired result, is known as

Program
All of these
Algorithm
Decision Table

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Answer: Option A. -> Program

Question 56. In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

recognition of basic syntactic constructs through reductions
recognition of basic elements and creation of uniform symbols
creation of more optional matrix
use of macro processor to produce more optimal assembly code

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Answer: Option C. -> creation of more optional matrix

Question 57. Indicate which of the following is not true about an interpreter?

All of these
Interpreter generates an object program from the source program
Interpreter is a kind of translator
Interpreter analyses each source statement every time it is to be executed

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Answer: Option B. -> Interpreter generates an object program from the source program

Question 58. The function(s) of the Syntax phase is/ are:

to parse the source program into the basic elements or tokens of the language
to build a uniform symbol table
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
to build a literal table and an identifier table

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Answer: Option C. -> 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

Question 59. Which table is a permanent databases that has an entry for each terminal symbol?