JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD MCA 2018 SCRIPTING LANGUAGES Previous Question Paper (June/July - 2018 - R17)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
List and explain the features that characterize scripting language.
Answer
Scripting languages are characterized by several key features: interpreted execution, where code is executed line-by-line without prior compilation; dynamic typing, allowing variables to change types at runtime; high-level abstraction, which simplifies memory management and complex data structures; ease of use, focusing on rapid development and automation; and strong integration, enabling seamless interaction with other software components, libraries, and system shells.
Discuss about the continue block in finer points of looping.
Answer
The continue statement is a control flow mechanism used within loops (for, while, do-while) to skip the remainder of the current iteration's code block. When encountered, the program immediately jumps to the loop's condition evaluation or increment step, effectively forcing the start of the next iteration. It is primarily used to bypass specific logic for certain conditions without terminating the entire loop execution.
What are the four delimitation variants for Embedding PHP Code in to Your Web Page?
Answer
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Explain about variable substitution in Tcl.
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What are the Basic Data types available in python?
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Part B
Define Subroutines? Explain in detail about calling Subroutines and Subroutine arguments.
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How can we access array elements in Perl? Write a Perl script to perform reverse order of lines in a file.
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State and enumerate the process of Text wrapping in Perl.
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Briefly explain about Array of arrays and Packages in Perl.
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Discuss PHP Authentication and Methodologies
Hard-Coded Authentication
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File-Based Authentication
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Define Data Encryption. Explain in detail about Encrypting Data with the md5 ( ) Hash Function.
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Explain in detail about Tcl structure with neat diagram.
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Briefly discuss about Tk widget naming hierarchy.
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List and elaborate on the Modules available in python.
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Discuss in detail about the process of Exception Handling in python.
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