Download JNTUH MCA 4th Sem R15 2017 August 824AB Linux Programming Question Paper

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Code No: 824AB

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA IV Semester Examinations, August - 2017

LINUX PROGRAMMING

Time: 3hrs Max.Marks:75

Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A.

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Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.

PART - A 5 x 5 Marks = 25

1. How are diff, comm and cmp utilities different from each other? Explain. 5
2. Define the boot block, super block, inode block and data block of the file system. 5
3. What is a zombie process and explain how it may manifest itself? 5

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4. Explain popen( ) and pclose( ) functions with sample prototypes. 5
5. Differentiate between TCP and UDP. 5

PART -B 5 x 10 Marks =50

1. a) What are the features of Linux Operating system? b) Explain the usage of ‘chmod’ command with clear syntax and example. [5+5]
   OR
   

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   a) Write down the responsibilities of BASH shell. b) How to debug a shell script? Explain various options available in BASH shell for debugging a script. [5+5]
2. Give the directory structure of Linux file system. Explain its entries. [10]
   OR
   What are the three kernel data structures for open files? Explain how these data structures are shared by two independent processes with the same file open with a neat diagram.[10]
3. Explain in how many ways and when a process terminate under normal and abnormal conditions. [10]
   

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   OR
   With an illustrative example explain signal( ) and abort( ) functions. [10]
4. Explain how to implement client - server communication using Message Queues. [10]
   OR
   Describe the operations of semop( ) with sample C program. [10]

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5. Explain how TCP connections are established and terminated. [10]
   OR
   Write the syntax of the following socket system calls and explain: a) connect( ) b) listen( ) c) shutdown( ) [10]

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