JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY
HYDERABAD
III Year B.Tech. IT I-Sem (R09) T T/P/D C
3 1 3
OPERATING SYSTEMS& COMPUTER NETWORKS LAB (THROUGH LINUX)

Objective:
• To Understand the functionalities of various layers of OSI model
• To understand the operating System functionalities

System/ Software Requirement:
• Intel based desktop PCs LAN CONNECTED with minimum of 166 MHZ or faster processor with atleast 64 MB
RAM and 100 MB free disk space

Computer Networks Lab:
Part - A
1. Implement the data link layer framing methods such as character, character stuffing and bit stuffing.
2. Implement on a data set of characters the three CRC polynomials – CRC 12, CRC 16 and CRC CCIP .
3. Implement Dijkstra ‘s algorithm to compute the Shortest path thru a graph.
4. Take an example subnet graph with weights indicating delay between nodes. Now obtain Routing table art
each node using distance vector routing algorithm
5. Take an example subnet of hosts . Obtain broadcast tree for it.
6. Take a 64 bit playing text and encrypt the same using DES algorithm .
7. Write a program to break the above DES coding
8. Using RSA algorithm Encrypt a text data and Decrypt the same .

Part -B
Operating Systems Lab:
1. Simulate the following CPU scheduling algorithms
a) Round Robin b) SJF c) FCFS d) Priority
2. Simulate all file allocation strategies
a) Sequentialb) Indexed c) Linked
3. Simulate MVT and MFT
4. Simulate all File Organization Techniques
a) Single level directory b) Two level c) Hierarchical d) DAG
5. Simulate Bankers Algorithm for Dead Lock Avoidance
6. Simulate Bankers Algorithm for Dead Lock Prevention
7. Simulate all page replacement algorithms
a) FIFO b) LRU c) LFU Etc...
8. Simulate Paging Technique of memory management.

Problems on Linux Programming:
Note: Use Bash for Shell scripts.
1. Write a shell script that accepts a file name, starting and ending line numbers as arguments and displays all
the lines between the given line numbers.
2. Write a shell script that deletes all lines containing a specified word in one or more files supplied as
arguments to it.
3. Write a shell script that displays a list of all the files in the current directory to which the user has read, write
and execute permissions.
4. Write a shell script that receives any number of file names as arguments checks if every argument supplied
is a file or a directory and reports accordingly. Whenever the argument is a file, the number of lines on it is
also reported.
5. Write a shell script that accepts a list of file names as its arguments, counts and reports the occurrence of
each word that is present in the first argument file on other argument files.
6. Write a shell script to list all of the directory files in a directory.
7. Write a shell script to find factorial of a given integer.
8. Write an awk script to count the number of lines in a file that do not contain vowels.
9. Write an awk script to find the number of characters, words and lines in a file.
10. Write a C program that makes a copy of a file using standard I/O and system calls.
11. Implement in C the following Unix commands using System calls
a). cat b) mv
12. Write a C program to list directory files in a directory.
13. Write a C program to emulate the Unix ls –l command.
14. Write a C program to list for every file in a directory, its inode number and file name.
15. Write a C program that redirects standard output to a file.Ex: ls > f1.
16. Write a C program to create a child process and allow the parent to display “parent” and the child to display
“child” on the screen.
17. Write a C program to create a Zombie process.
18. Write a C program that illustrates how an orphan is created.
19. Write a C program that illustrates how to execute two commands concurrently with a command pipe. Ex:- ls
–l | sort
20. Write C programs that illustrate communication between two unrelated processes using named pipe.
21. Write a C program in which a parent writes a message to a pipe and the child reads the message.
22. Write a C program (sender.c) to create a message queue with read and write permissions to write 3
messages to it with different priority numbers.
23. Write a C program (receiver.c) that receives the messages (from the above message queue as specified in
(22)) and displays them.
24. Write C programs to transfer a large amount of data between processes, using
a) a pipe b)a FIFO c)a message queue.

REFERENCE BOOKS:
1.Advanced Unix Programming, N.B.Venkateswarulu, BS Publications.
2.Unix and Shell programming, B.A.Forouzan and R.F.Gilberg, Cengage Learning.
3.Unix and Shell Programming, M.G. Venkatesh Murthy, Pearson Education, 2005.
4.Unix Shells by Example, 4th Edition, Elllie Quigley, Pearson Education.
5.Sed and Awk, O.Dougherty&A.Robbins,2nd edition,SPD.
  • Created
    Dec 23, 2014
  • Updated
    Dec 23, 2014
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