Cognizant[CTS]_Technical_Interview questions

1. Explain about OSI layer ,TCP/ip layers & each layer functionalities?
2. Difference between UDP & TCP with examples?
3. Write a program for prime number?
4. What is binary tree?
5. When we are downloading a video from youtube, which protocol it is using?
6. What are pre processor directives ? and diff b/w  #define & typedef ?
7. Explain about storage classes with examples?
8. Linked list  (Inserting, deleting  node)
9. Explain about argcount &argv with examples ?
10. Difference b/w malloc & calloc?
11. Block diagram of 8051?
12. How many of interrupts and timers in 8051?
13. If OS is of 32-bit 7 processor should be 32-bit why?
14. What about socket  programming?
15. Explain about your b.tech project ?
16. What are the types of network topologies ?
17. How free knows , how many bytes should be clear?
18. Draw binary tree structure ?
19. With out using strcpy and strlen , write a program to reverse a string?

                                                               

                                                                          ...........  Submitted by Sukumar_Fibcom_DESD_AUG_10