Monday, 20 May 2013
MC9241 NP NETWORK PROGRAMMING IMPORTANT QUESTIONS FOR EACH UNIT
UNIT-1
2 Mark Questions
1. What are the time
values maintained by the UNIX systems?
2. What are the
differences between System calls and library functions?
3. What is POSIX?
4. What is SVR4?
5. What are file
descriptors?
6. How can you achieve
atomicity in appending and creating a file?
7. What are dup () and
dup2 () functions ?
8. What is the use of
fcntl() function ?
9. State the prototype
and the use of ioctl() function.
10. How will you
retrieve the properties of a file ?
11. Give the use of
access function.
12. State the need for
umask function.
13. Why do we nee
chmod and fchmod functions?
14. What is sticky
bit?
15. How will you
change the user Id of a file?
16. What is meant by
hole in a file?
17. How can you
truncate the contents of a file?
18. What are symbolic
links? How is it different from hard links?
19. How will you
create and remove links using C functions
20. What are the times
fields maintained for a any file
21. What is the use of
utime function?
22. What is the use of
sync () and fsync() functions ?
23. What are streams
and FILE objects?
24. What are the contents of password file?
16 Mark Questions
1. Write briefly about
file I/O Operations
2. What are the data
structures used for File sharing in UNIX? Explain with a neat diagram
3. Briefly write notes
on the various types of files in UNIX.
4. Write short notes
on file access permission and its effect on files and directories.
5. With neat diagram
explain the file system of UNIX.
6. What the function
used to create, modify and red directories?
7. Briefly explain the
Standard I/O Library functions.
8. How is data protected in UNIX? Illustrate
chmod and chown with examples
UNIT-2
2 Mark Questions
1. Draw Internet Protocol suit.
2. List the characteristics of UDP
3. List the characteristics of TCP
4. What do understand by Three Way Handshake in a TCP Connection?
5. List the packets that exchanged while TCP connection
terminates.
6. Briefly describe Port numbers and its categories.
7. Define IPv4 Socket Address Structure
8. Define IPv6 Socket Address Structure
9. What is generic socket address structure?
10. What is Byte Order Function?
11. What are Byte Manipulation Functions?
12. What are Address Conversion functions?
13. Differentiate
between IPv4 and IPv6 address system
16 Mark Questions
1. What do you understand by system calls used with sockets?
Briefly describe any six of
them (16).
2. Draw and briefly explain the state transition diagram of
TCP.(16)
3. Briefly describe
concurrent servers. (16)
UNIT-3
2 Mark Questions
1. Explain TCP Echo server and client.
2. Define signal.
3. Explain signal function.
4. What is wait and Waitpid function?
5. What is the difference between wait and Waitpid function?
6. Explain crashing of server host.
7. Explain Shutdown of server host.
8. Explain the syntax of signal function.
9. Explain I/O multiplexing.
10. What are the scenarios used in I/O multiplexing
applications?
11. What are the 5 basic I/O models available in UNIX?
12. State where POSIX function is used.
13. Define the two terms used in POSIX.
14. What are the possibilities of select function?
15. What are the three select descriptor arguments?
16. Difference between close function and shutdown function.
17. Difference between select function and pselect function.
18. Define poll function.
19. Difference between poll function and select function.
20. What are the three conditions handled with the socket?
21. What are the three
classes of data identified by poll?
16 Mark Questions
1. Write a TCP socket program to implement an Echo server/Echo
client. (16)
2. Explain the following concept with suitable example. (16)
a) Shutdown function b) Server host crashes
c) Input output models d) Posix signal
3. Discuss the following scenario of server operations.
a) Crashing of server host (06)
b) Crashing and rebooting of server host (06)
c) Shutdown of server host (04)
4. Explain in detail about the various I/O models in Unix
operating system. (16)
5. Explain in detail about
a) POSIX signal handling (08)
b) Boundary condition (08)
UNIT-4
2 Mark Questions
1. What are various
ways to get and set the options that affect a socket?
2. Explain Elementary
UDP sockets.
3. Explain UDP server
and UDP client.
4. What are the two
functions used in Elementary UDP?
5. Difference between
main function and dg_echo function.
6. What are the four
steps used in client processing loop?
7. Difference between
server function dg_echo and client function dg_cli.
8. Define DNS.
9. Define Resource Records.
10. What are the types
which affect the RRS?
11. Define Resolvers
and Name servers.
12. Explain
Gethostbyname function
13. State the role of
pointer queries in DNS.
14. What are the three
ways to set RES_USE_INET6?
15. Explain
gethostbyaddr function.
16. What are unamed
functions?
17. Explain
gethostname function.
18. Explain
getservbyname and getservbyport functions.
19. Explain IPv4
socket option.
20. Explain ICMPv4
socket option.
21. Explain IPv6 socket option.
16 Mark Questions
1.a) Assume both a
client and server set the SO_KEEPALIVE socket option and the connectivity
is maintained between
the peers but them is no exchange of data. When the keep alive timer
expires every 2 hours,
how many TCP segments are exchanged across the connection? Justify
your answer with an
illustration. (06)
b) Write a program
that checks all the socket option of a socket and sets the value for receiver
buffer size to 520
bytes. (10)
2.a) Write notes on
RES_USE_INET6 resolver option in gethostbyname and gethostbyname2
functions. (08)
b) Discuss any four
TCP socket option in detail. (08)
3.a) Discuss about IP
socket option and ICMP socket options in detail with Suitable example.
(08)
b) Write the
similarities between UDP socket, TCP socket and raw socket. (08)
4.a) Explain the
purpose and usage of UDP sockets and their different functions. (10)
b) Brief the way in
which a TCP client server different from UDP client server. (06)
5. Briefly discuss
about DNS with an example. (16)
6. Briefly discuss
about TCP Echo server and client. (16)
7. Briefly discuss about UDP Echo server and
client. (16)
UNIT-5
2 Mark Questions
1. Explain IPv4 and
IPv6 server.
2. What are Address
Testing macros?
3. Explain the
implementations of threads.
4. What are the
advantages and disadvantages of threads?
5. What are the basic
function of thread creation and termination?
6. Define thread.
7. List out the unique
values maintained by a thread.
8. What are the common
thread interfaces?
9. Explain thread
function.
10. Define
multithreading.
11. Mention the
purpose of ping program.
12. Explain trace
route program.
13. Define mutexes.
14. Explain basic
thread functions.
15. Explain raw
sockets.
16. Define proto
structure.
17. Differentiate ping and trace route program
16 Marks Questions
1. a) Compare Fork and
Thread. (04)
b) Compare Wait and
Waitpid. (04)
c) Write a C program
that can generate an IC Process the received ICMPv4 echo reply.
(08)
2. a) Write notes on
raw socket creation (04)
b) Write notes on raw
socket output (06)
c) Write notes on raw
socket input (06)
3. a) Explain how a
TCP echo server using thread created and also give their advantages. (10)
b) Write short notes
on mutexes and condition variables. (06)
4. a) Compare IPv4 and
IPv6. (08)
b) Explain about
thread creation and thread termination with suitable example. (08)
5. Explain the trace
route program with sample code and example. (16)
6. Explain in detail IPv4 and IPv6
interoperability. (16)
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