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Explain difference between Scanning and parsing.
Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.
Erlang is used to (A) Measure busy period (B) Give total busy period in minutes (C) Measure average call rate (D) Indicate total call period Ans
Name some popular storage devices In contrasts with storage, which 1) retains data and programs irrespective of whether they are currently in use or not, (2) retains data
Electrically erasable programmable read only memory (EEPROM) An EEPROM is a special type of PROM which can be erased by exposing it to an electrical charge. Like other kinds of
IA-64 instead depends on the compiler for this task. Even before the program is fed into the CPU, the compiler studies the code and makes the similar sorts of decisions that would
c program for converting context free grammar to griebach normal form
Level of any node of a tree is :- Its distance from the root
Q. Speed Up - metrics for performance evaluation? Speed up is ratio of time needed to execute a given program employing a specific algorithm on a machine with single processor
E Brokerage facilitates search & retrieval of Information The success factor of a brokerage is its ability to retain existing clients and to enhance their satisfaction by effec
What is WMFC
What are the properties which a data item should possess to implement a critical section? The Critical Section Problem Solution should satisfy the following conditions: 1.
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