Compilers

Syntax-Directed Definitions and Translations

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Dividing a project into segments and smaller units in order to simplify design and programming efforts is called?
Modular approach
Top down approach
Bottom up approach
Left right approach
Explanation:
Modular design, or “modularity in design”, is a design approach that subdivides a system into smaller parts called modules or skids that can be independently created and then used in different systems.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The process manager has to keep track of ___________
Status of each program
Information to a programmer using the system
Status of each program & Information to a programmer using the system
None of the mentioned
Explanation:
Process manager keep track of the status and info about the program.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The segment base is specified using the register named is?
ORG instructions
TITLE instruction
ASSUME instruction
SEGMENT instruction
Explanation:
ORG segment base register is used to specify the register.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which loader function is accomplished by loader?
Reallocation
Allocation
Linking
Loading
Explanation:
Function of a loader.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
The method which merges the bodies of two loops is?
Loop rolling
Loop jamming
Constant folding
None of the mentioned
Explanation:
In computer science, loop fusion (or loop jamming) is a compiler optimization and loop transformation which replaces multiple loops with a single one.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which table is a permanent database that has an entry for each terminal symbol?
Terminal Table
Literal Table
Identifier Table
None of the mentioned
Explanation:
A database that has entry for each terminal symbols such as arithmetic operators, keywords, punctuation characters such as ‘;’, ‘,’etc Fields: Name of the symbol.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
In what module multiple instances of execution will yield the same result even if one instance has not terminated before the next one has begun?
Non usable module
Serially usable
Re-enter-able
None of the mentioned
Explanation:
Re enter-able module is the reason why the compiler is used in the first place.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Software that measures, monitors, and controls events are ___________
System S/w
Real Time software
Scientific software
Business Software
Explanation:
In computer science, real-time computing (RTC), or reactive computing describes hardware and software systems subject to a “real-time constraint”, for example operational deadlines from event to system response.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following functions is performed by loader?
Allocate memory for the programs and resolve symbolic references between objects decks
Address dependent locations, such as address constants, to correspond to the allocated space
Physically place the machine instructions and data into memory
All of the mentioned
Explanation:
A loader is the part of an operating system that is responsible for loading programs and libraries.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
The root directory of a disk should be placed ___________
At a fixed address in main memory
At a fixed location on the disk
Anywhere on the disk
None of the mentioned
Explanation:
Root directory is placed at a fixed disk location