Language Processors
Job Control Language (JCL) statements are Used to

Specify, to the operating system, the beginning and end of a job in a batch
Read the input from the slow-speed card reader to the high-speed magnetic disk
All of these
Allocate the CPU to a job

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Language Processors
Bug means

Documenting programs using an efficient documentation tool
A logical error in a program
A difficult syntax error in a program
All of these

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Language Processors
A loader is

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

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Language Processors
In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

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

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