Jawaharlal Nehru Technological University Hyderabad 2010-3rd Sem M.C.A Code No: 33 R06 -ester Supplementary s UNIX NETWORK PROGRAMMING - Question Paper

 

 

 

 

 

Code No: 33

 

 

 

R06

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

MCA-III Semester Supplementary Examinations July 2010

UNIX NETWORK PROGRAMMING

Time: 3hours Max.Marks:60

Answer any Five questions

All questions carry equal Marks

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1.a)

 

 

 

 

b)

 

2.a)

b)

 

3.

 

4.a)

b)

 

 

 

 

5.a)

 

 

 

 

b)

 

 

 

6.a)

 

b)

 

 

 

7.a)

b)

 

 

 

8.a)

b)

Explain the following utilities:

i) df ii) finger

iii) ftp iv) mv

v) tee vi) pg

Explain briefly about Vi editor.

 

Write a C program to find whether a given file is a file or a directory.

What is a shell? Explain why there is a single kernel and multiple shells.

 

Describe how files can be shared in UNIX and explain concept of dup( ).

 

What is a process? Write a C program to start a new process.

Write the differences between:

i) Kill and raise functions

ii) vfork ( ) and exec ( )

 

Write brief notes on:

i) File locking

ii) Record locking

iii) Semaphores.

What are the different kernel data structures maintained by kernel for message

queues?

 

What are the different kernel data structures maintained by kernel for semaphore?

Explain.

Why should we associate a type with each message? Explain the purpose of

having a type associated with each message, in detail.

 

Explain briefly file locking with semaphores.

List out the different kernel data structures maintained by kernel for shared

memory. Explain briefly.

 

Write short notes on TCP/IP model illustrating with suitable diagrams.

Illustrate the steps involved in a connection less protocol for a typical client

server. Write in brief about the system cells involved on the client and server side.

 

-oOo-