NP IMP QUESTIONS

                                                                NP


1.draw the OSI server layered model along with the appropriate mapping to internet portal suite and explain 


2.explain unix posix standars in details


3.compare UDP with TCP protocals


4.explain TCP conncetion establishment and termination process


5.what are the limitations in the size of the IP datagram ? explain ?


6.with the help of neat stectch explian  the  steps and layers involved whaen an application writes to aTCP socket


7.write a syntax and explain the following socket functions 
  a.  socket
b.  bind
c.  listen
d.  axxept
e.  connect
f.   close
 8.give the IPv4 and IPv6 socket address structiors and explain the significant of each field


9.what is the purpose of FORK() function .


10.explain how multiple clients are handled by a concurent servers


11.write the programs for TCP echo server and TCP echo client and explain.


12.explain posix signal handling in details


13.wxplain the normal strat up  and normal termination of TCP client and server.